 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| analog ics 33395 evaluation motor board designer reference manual DRM33395/d rev. 2 05/2003 communicate control protect p o w e r embedded motion control f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
DRM33395 designer reference m a n u al 3 3 39 5 eval u atio n m oto r b o ard motorola f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola list of sections 1 33395 evaluation motor board list of sections section 1. introduction and setup ..... ............................... 9 section 2. operational description .... ............................. 15 section 3. pin descripti ons....................... .......................17 section 4. schematics an d parts list ............................. 25 section 5. design consid erations ..... ............................. 37 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 2 list of sections motorola list of sections f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola table of contents 3 33395 evaluation motor board table of contents section 1. introduction and setup 1.1 contents ............ ................ ................. .............. .............. ............9 1.2 smos evm motor board introduction .............. .............. ............9 1.3 about this manual......... ................ ................. ................ ............9 1.4 warnings ............. ................. .............. .............. .............. .......... 12 1.5 setup guide......... ................. .............. .............. .............. .......... 13 section 2. operational description 2.1 contents .............. ................. .............. .............. .............. ..........15 2.2 introduction........ ................ ................. .............. .............. ..........15 2.3 electrical characteristic s ............... ................. ................ ..........16 section 3. pin descriptions 3.1 contents .............. ................. .............. .............. .............. ..........17 3.2 introduction ................. ................. ................ ................. ............ 17 3.3 signal descripti ons ...................... ................ ................. ............ 19 3.3.1 power connectors j3 and jp4........... .............. ........... ........ 19 3.3.2 40-pin ribbon connector j1 ......... .............. .............. .......... 19 3.3.3 output connectors: j2, j4, fastons (j5, j7, j8)............. 22 3.3.4 jumpers and switch/push butt on: m0, m1, pwm, sw1..... 22 3.3.5 test points ............ ................. ................ ................. ............ 24 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 4 table of contents motorola table of contents section 4. schematics and parts list 4.1 contents ............ ................ ................. .............. .............. ..........25 4.2 overview............ ................ ................. .............. .............. ..........25 4.3 schematics .......... ................. .............. .............. .............. .......... 25 4.4 parts list.......... ................ ................ ................. .............. ..........32 section 5. design considerations 5.1 contents ............ ................ ................. .............. .............. ..........37 5.2 overview............ ................ ................. .............. .............. ..........37 5.3 3-phase h-bridge ............ ................ ................. .............. ..........37 5.4 bus voltage and current feedback si gnals.............. ............... 38 5.5 back-emf signals ........... ................ ................. .............. ..........40 5.6 brake control..... ................ ................. .............. .............. ..........41 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola list of figures 5 33395 evaluation motor board list of figures figure title page 1-1 system configurations..... ................ ................. .............. ..........10 1-2 smos evm motor board ver. 140a01 ............. .............. .......... 11 1-3 smos evm motor board setup ......... .............. .............. .......... 14 3-1 40-pin input connector j1 ............... ................. .............. .......... 18 4-1 smos evm motor board ver. 140a01 overview ..... ...............26 4-1a smos evm motor b oard ver. 140a02 overview ....................27 4-2 3-phase h-bridge with gate driver . ................. .............. ..........28 4-3 current feedback circuits ............... ................. .............. ..........29 4-4 back-emf signals ......... ................ ................. ................ .......... 30 4-5 brake control..... ................ ................. .............. .............. ..........31 4-6 brushless dc motor connections - schematic view. ...............31 5-1 phase current and dc bus voltage sensing ............... ............ 39 5-2 reconstructed bus current ............. ................. .............. ..........40 5-3 phase c back-emf feedback ............. .............. ............ .......... 40 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 6 list of figures motorola list of figures f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola list of tables 7 33395 evaluation motor board list of tables table title page 2-1 electrical characteristic s ............... ................. ................ .......... 16 3-1 connector j1 signal descriptions ...... .............. .............. .......... 19 3-2 connectors j2 and j4 signal descriptions....... .............. .......... 22 3-3 driver jumper groups for operati ng mode ............. ................. 22 3-4 gate driver pwm signal selection ......... .............. ............ ........23 3-5 test points ............... .............. .............. .............. .............. ........24 4-1 parts list.......... ................ ................ ................. .............. ..........32 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 8 list of tables motorola list of tables f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola introduction and setup 9 33395 evaluation motor board section 1. introduction and setup 1.1 contents 1.2 smos evm motor board introduction .............. .............. ............9 1.3 about this manual......... ................ ................. ................ ............9 1.4 warnings ............. ................. .............. .............. .............. ..........12 1.5 setup guide......... ................. .............. .............. .............. ..........13 1.2 smos evm moto r board introduction motorola?s smartmos tm 33395 evaluati on motor board (smos evm motor board) is a 12-volt, 8-amp power stage that is an integral part of motorola?s em bedded motion control series of development tools. it is also supplied as a kit. in combination with one of the embedded motion-control series c ontrol or evalua tion boards, it provides a ready-made development pl atform for brushless dc motors. the motor can be controlle d using hall sensors, an optical encoder or sensorless techniques. an illustration of system co nfigurations is shown in figure 1-1 . figure 1-2 depicts the board layout. 1.3 about this manual key items can be found in the fo llowing locations in this manual: ? setup instructions ar e found in chapter 1.5 . ? schematics are found in chapter 4.3 . ? pin assignments are shown in figure 3-1 , and a pin-by-pin description is contained in chapter 3.3 . ? for those interested in the refe rence design aspects of the board?s circuitry, a description is provided in section 5 . f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 10 introduction and setup motorola introduction and setup figure 1-1 system configurations hc08 controller board smos evm motor board motor workstation mmds08 dsp evm board smos evm motor board motor workstation b) 56800(e) dsp a) mc68hc(9)08mr microcontroller optional feedback optional feedback f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . introduction and setup about this manual 33395 evaluation motor board DRM33395 designer reference manual motorola introduction and setup 11 figure 1-2 smos evm motor board ver. 140a01 motor connectors power supply connectors trimmer jumpers and switch uni-3 connector f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 12 introduction and setup motorola introduction and setup 1.4 warnings the smos evm motor boar d kit includes a rotati ng machine and power transistors. both can r each temperatures hot enou gh to cause burns! to facilitate safe operation, 12-volt input power should come from a dc laboratory power supply that is cu rrent limited to no more than 10 amps. the user should be aware that: ? before moving scope probes, maki ng connections, etc., it is generally advisable to power down the 12-v olt supply. ? standalone operation of th e board should be allo wed only with use of an insulative pad or standoffs as shown in figure 1-3 . ? wearing safety glasses, avoidi ng neckties and jewelry, using shields, and operation by personnel trained in power electronics lab techniques are also advisable. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . introduction and setup setup guide 33395 evaluation motor board DRM33395 designer reference manual motorola introduction and setup 13 1.5 setup guide setup and connections for the smos evm motor board are straightforward. the sm os evm motor board conn ects to a motorola embedded motion control seri es control board via a 40-pin ribbon cable. the motor?s power leads plug into one of the output connectors j2 or j4 or faston type (j5 j7 j8). figure 1-3 depicts a completed setup with control board or module. follow these steps to set up the board: 1. mount 4 standoffs to the smos evm motor board at the locations indicated in figure 1-3 . step 1 and step 3 are optional when making connections to dsp control boards such as the dsp56f8xxevm that can be placed flat on a bench next to the smos evm motor board. 2. plug one end of the 40-pin ribbon cable that is supplied with motorola embedded motion control series control boards into input connector j1, located on the right-hand side of the motor board, considering its ? default front view ? position as in figure 1-2 . the other end of this cable links to the control board?s 40-pin output connector. 3. mount the control board on top of the standoffs with screws and washers. this step is optional with dsp control boards. 4. connect a 12-vdc power supply either to connector j3 or power jack jp4, labeled ?power 12v?. either one, but not both, can be used. these connectors are located on the front left-hand corner of the board. the 12-volt power supply should be rated to match the motor current. 5. apply power to the smos evm motor board. the green power-on led lights when the voltage supply is present. note that the smos evm motor board powers the control board as well. caution: since the control board is powere d by the smos evm motor board, it is imperative that only one power supply is used! 6. temperature, under-voltage or over-vol tage faults, or externally sensed bus current overflow disables the gate driver. board reset is needed. either switch the power supply off and on or provide a ? soft reset ?. to provide the soft reset on the 140a01 board version, toggle the sw1 switch from position 3 to 2; on the 140a02 version, press the reset button. refer to chapter 3.3.4 to verify the jumper positions. note: check if the tr immer tagged in figure 1-2 is set to <2.45v (between bottom trimmer pin-2, r 131 label, and gnda) whic h thresholds the dc bus current to 10 amps. the closer it s value is set to 1.65v, the smaller the bridge current is that can flow. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 14 introduction and setup motorola introduction and setup figure 1-3 smos evm motor board setup motor 56800(e) smos evm 40-pin ribbon cable standoff 12-volt motor supply standoff motor board evaluation module or hc08 control board standoffs or hcs12 control board or mpc evaluation module f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola operational description 15 33395 evaluation motor board section 2. operational description 2.1 contents 2.2 introduction ............. .............. .............. .............. .............. ..........15 2.3 electrical characteristics ............... ................. ................ ..........16 2.2 introduction motorola?s embedded motion control series smos evm motor board is a 12-volt, 8-amp, surf ace-mount power stage with an analog smos driver. in combination with one of the embedded motion control series control boards, it provides a development platform that allows algorithms to be written an d tested without the need to design and build a power stage. it supports algorithms that use hall sensors, encoder feedback, and back-emf (electromotive force) signals for sensorless control. the smos evm moto r board has an over-current protection that is independent of the control board, yet some care in its setup and use is required for board or moto r protection. current-meas uring circuitry is set up for 8 amps full scale, according to trimmer position. a 25c ambient temperature operation with output current up to 10 amps of continuous rms value is within the board?s thermal limits. no te that there is no thermal protection provided on the board. input connections are ma de via a 40-pin ribbon cable connector j1. pin assignments for the inpu t connector are shown in figure 3-1 . power connections to the motor ar e made on one of the output connectors j2 or j4 or faston type (j5 j7 j8). phase a (j8), phase b (j7), and phase c (j5) are labeled on th e board, the phase pin order for all three connector types is identical. power requirements are met by a single external 12-vdc power supply. two connectors, labeled j3 and jp4, are f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 16 operational description motorola operational description provided for the 12-volt power supply; they are located on the front edge of the board. power is supplied to one or the other, but not both. a summary of the information nee ded to use the smos evm motor board follows. for desi gn information, see section 5 . 2.3 electrical characteristics the electrical characteristics in table 2-1 apply to operation at 25c and a 12-vdc power supply voltage. table 2-1 electrical characteristics characteristic symbol min typ max units power supply voltage vdc 10.2 12 16 v quiescent current i cc ?70?ma high state logic 1 input voltage v ih 2.4 3.3 or 5 7 v low state logic 0 input voltage v il ? < 0.4 0.8 v input resistance r in ?10?k ? analog output range v out 0?3.3v phase current sense voltage i sense ?172?mv/a bus voltage sense voltage v bus ?206?mv/v power mosfet on resistance r ds(on) ?1016m ? rms output current i m ??10 a total power dissipation p diss ??18w f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola pin descriptions 17 33395 evaluation motor board section 3. pin descriptions 3.1 contents 3.2 introduction............. .............. .............. .............. .............. .......... 17 3.3 signal descriptions ................. .............. .............. .............. ........ 19 3.3.1 power connectors j3 and jp4........ .............. .............. ........ 19 3.3.2 40-pin ribbon connector j1 ................ ................ ............... 19 3.3.3 output connectors: j2, j4 , fastons (j5, j7, j8) ............. 22 3.3.4 jumpers and switch/push bu tton: m0, m1, pwm, sw1 ..... 22 3.3.5 test points ................. ................ ................. .............. .......... 24 3.2 introduction inputs and outputs are loca ted on six board conne ctors depicted in figure 1-2 : ? there are three motor connectors conducting identical output signals, however only one motor ca n be connected at run time to one of these connectors. ? there are two power s upply connectors which introduce identical input signals, however only one power supply can be plugged in at run time to one of these connectors. ? one connector (uni-3) is associat ed with the controller board. in addition, many test points are located on th e smos evm motor board. pin descriptions for each of these connectors and the test points are identified in the following information. pin assignm ents for the input and f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 18 pin descriptions motorola pin descriptions output connectors are shown in figure 3-1 with their descriptions in table 3-1 through table 3-5 . figure 3-1 40-pin input connector j1 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 bemf_sense_c bemf_sense_b bemf_sense_a shielding_a zero_cross_c zero_cross_b zero_cross_a pwm_ctrl identification brake_control shielding_a i_sense_c i_sense_b i_sense_a i_reconst_dcb v_sense_dcb +12v_a shielding_a shielding_a +3.3v_a +5v_d +5v_d gnd gnd pwm_cb shielding_d pwm_ct shielding_d pwm_bb shielding_d pwm_bt shielding_d pwm_ab shielding_d pwm_at schematic view j1 con/40 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 shielding_d shielding_d shielding_d shielding_d shielding_d gnd +5v_d +3.3v_a gnda i_reconst_dcb i_sense_b shielding_a identification zero_cross_a zero_cross_c bemf_sense_a bemf_sense_c pwm_at pwm_ab pwm_bt pwm_bb pwm_ct pwm_cb gnd +5v_d gnda +12v v_sense_dcb i_sense_a i_sense_c brake_control pwm_ctrl zero_cross_b shielding_a bemf_sense_b physical view f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . pin descriptions signal descriptions 33395 evaluation motor board DRM33395 designer reference manual motorola pin descriptions 19 3.3 signal descriptions pin descriptions ar e identified in this subsection. 3.3.1 power connectors j3 and jp4 two connectors, labeled j3 and jp4, ar e provided for the 12-volt power supply. they are located on the bottom left-hand corner of the board. connector j3 is a 2.5-mm power jack for plug-in ty pe 12-volt power supply connections. connector jp4 has screw te rminal inputs labeled + (plus) and ? (minus), fo r accepting wire inputs. po wer is supplied to one or the other, bu t not both. the po wer supply requi red parameters depend on the motor type used. the def ault output current limit of the board is 10 amps. 3.3.2 40-pin ribbon connector j1 signal inputs are grouped together on 40-pin ribbon cable connector j1, located on the right side of the boar d. pin assignment s are shown in figure 3-1 . pin descriptions are listed in table 3-1 . table 3-1 connector j1 signal descriptions (sheet 1 of 3) pin no. signal name description 1pwm_at pwm_at is the gate drive signal for the top half-bridge of phase a. a logic high at input connector j1 turns on the phase a top switch. 2 shielding_d pin 2 is connected to a shield wire in the ribbon cable and ground on the board. 3pwm_ab pwm_ab is the gate drive signal for the bottom half-bridge of phase a. a logic high at input connector j1 turns on the phase a bottom switch. 4 shielding_d pin 4 is connected to a shield wire in the ribbon cable and ground on the board. 5pwm_bt pwm_bt is the gate drive signal for the top half-bridge of phase b. a logic high at input connector j1 turns on the phase b top switch. 6 shielding_d pin 6 is connected to a shield wire in the ribbon cable and ground on the board. 7pwm_bb pwm_bb is the gate drive signal for the bottom half-bridge of phase b. a logic high at input connector j1 turns on the phase b bottom switch. 8 shielding_d pin 8 is connected to a shield wire in the ribbon cable and ground on the board. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 20 pin descriptions motorola pin descriptions 9pwm_ct pwm_ct is the gate drive signal for the top half-bridge of phase c. a logic high at input connector j1 turns on the phase c top switch. 10 shielding_d pin 10 is connected to a shield wire in the ribbon cable and ground on the board. 11 pwm_cb pwm_cb is the gate drive signal for the bottom half-bridge of phase c. a logic high at input connector j1 turns on the phase c bottom switch. 12 gnd digital power supply ground 13 gnd digital power supply ground, redundant connection 14 +5v_d digital +5-volt power supply 15 +5v_d digital +5-volt power supply, redundant connection 16 +3.3v_a analog +3.3-volt power supply 17 gnda analog power supply ground 18 gnda analog power supply ground, redundant connection 19 +12v +12-volt power supply 20 ? no connection 21 v_sense_dcb v_sense_dcb is an analog sense signal that measures dc bus voltage. it is scaled at 0.206 volts per volt of dc bus voltage. 22 i_reconst_dcb i_reconst_dcb is an analog sense signal that measures dc bus current. it is scaled at 0.172 volts per amp of dc bus current. 23 i_sense_a i_sense_a is an analog sense signal that me asures current in phase a. it is scaled at 0.172 volts per amp of dc bus current. 24 i_sense_b i_sense_b is an analog sense signal that me asures current in phase b. it is scaled at 0.172 volts per amp of dc bus current. 25 i_sense_c i_sense_c is an analog sense signal that measures current in phase c. it is scaled at 0.172 volts per amp of dc bus current. 26 ? no connection 27 ? no connection 28 shielding_a pin 28 is connected to a shield wire in the ribbon cable and ground on the board. 29 brake_control brake_control is the gate drive digital signal for the brake mosfet. 30 identification this is an identification signal that lets the controller know which power stage is present. it is nominally a 1.5khz square wave. table 3-1 connector j1 signal descriptions (sheet 2 of 3) pin no. signal name description f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . pin descriptions signal descriptions 33395 evaluation motor board DRM33395 designer reference manual motorola pin descriptions 21 31 pwm_ctrl this is a gate drive digital signal that is used for power stage board control with use of just one pwm input signal switching according to gate drive signals pwm_xx 32 ? no connection 33 ? no connection 34 zero_cross_a zero_cross_a is a digital signal that is used for sensing pha se a back-emf zero crossing events. 35 zero_cross_b zero_cross_b is a digital signal that is used for sensing pha se b back-emf zero crossing events. 36 zero_cross_c zero_cross_c is a digital signal that is used for sensing phase c back-emf zero crossing events. 37 shielding _a pin 37 is connected to a shield wire in the ribbon cable and ground on the board. 38 bemf_sense_a bemf_sense_a is an analog sense signal th at measures phase a back-emf. it is scaled at 0.206 volts per volt of dc bus voltage. 39 bemf_sense_b bemf_sense_b is an analog sense signal th at measures phase b back-emf. it is scaled at 0.206 volts per volt of dc bus voltage. 40 bemf_sense_c bemf_sense_a is an analog sense signal th at measures phase c back-emf. it is scaled at 0.206 volts per volt of dc bus voltage. table 3-1 connector j1 signal descriptions (sheet 3 of 3) pin no. signal name description f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 22 pin descriptions motorola pin descriptions 3.3.3 output connectors: j2, j4, faston s (j5, j7, j8) power output to the motor is loca ted on connectors j2, j4 and fastons (j5, j7, j8). pin assignments are described in table 3-2 . faston type connectors ar e labelled with pha (connector j8) for phase a, phb (j7) for phase b, and phc (j5) for phase c. phase order is identical for all three connectors. no te that wire color may vary with different motor types. 3.3.4 jumpers and switch/pus h button: m0, m1, pwm, sw1 the jumper groups m0 (jp2) and m1 (jp3) are used to select the operating mode of the sm os gate driver (see table 3-3 ). for the truth table of the driver , see its data sheet. for selection of the pw m signal brought to the gate driv er, the 140a01 board version uses the sw1 rotary s witch and the 140a02 version uses the pwm (jp5) jumper group and re set (sw1) push button. both solutions have the same behavior (see table 3-4 for an explanation). when one pwm signal is sent from t he controller board to the motor board through the uni-3 interface, the smos driver must multiplex it between the three phases according to the mode defined by m0 and m1. the mode selection is not needed w hen six pwm signals are generated. table 3-2 connectors j2 and j4 signal descriptions pin no. signal name faston pin name description 1 phase_a j8 phase_a supplies power to motor phase a. 2 phase_b j7 phase_b supplies power to motor phase b. 3 phase_c j5 phase_c supplies power to motor phase c. table 3-3 driver jumper groups for operating mode mo (jp2) m1 (jp3) comment + position + position high state logic 1 - position - position low state logic 0 (default) f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . pin descriptions signal descriptions 33395 evaluation motor board DRM33395 designer reference manual motorola pin descriptions 23 note: the gate driver ?soft reset? is necessary to leave t he drive off status that is not entered by de fault. when a fault arises or a parallel cable that is connected between a comput er and the controller board introduces an obscure voltage from this computer into the motor system, the reset assures correct driver re-initialization. the soft reset is activated either by toggling the sw1 rotary switch from position 3 to 2 (140a01 board version), or by resetting with t he sw1 push button (140a02 version). then the board generates a resetti ng pulse on the driver pwm_in pin. table 3-4 gate driver pwm signal selection sw1 rotary switch on 140a01 board representation on 140a02 board comment position 1 (1pwm pin) jp5 jumper uni position controller board gives 1 pwm signal position 2 (2+ pin) jp5 jumper + position high state logic 1 (6 pwm signals, default) position 3 (3- pin) sw1 button press (reset) resets drive off status (temporary) f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 24 pin descriptions motorola pin descriptions 3.3.5 test points ten test points provide easy access to the power supply, reference voltages and other circuits. they are listed in table 3-5 with their descriptions and locations. additional test points appearing left of the uni-3 connector are numbered adequately to un i-3 pin numbers and explained in table 3-1 . table 3-5 test points point no. signal name the test/measurement point is connected to: location 1 dcb_pos (mp1) the +12-volt motor bus above green led diode 2 gnd (mp2) the 12-volt power supply and motor bus ground below j2 - motor connector 3 +5v_d (mp3) the 5-volt digital power supply voltage above uni-3 connector 4 +3.3v_a (mp4) the 3.3-volt analog power supply voltage on top right corner 5 gnd (mp5) the 12-volt power supply and motor bus ground on top left side of uni-3 connector 6 gnda (mp6) the analog ground in the middle, above smos 7 1.65vref the 1.65-volt analog reference voltage above mp3, below mp4 8 dcb_half back-emf zero crossing ci rcuitry right of mp1, below smos 9 brake the gate of the brake?s transistor above mp1 10 l_reconst (tp22) pin 22 of uni-3 connector, see table 3-1 left of trimmer and mp3 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola schematics and parts list 25 33395 evaluation motor board section 4. schematics and parts list 4.1 contents 4.2 overview ................ .............. .............. .............. .............. .......... 25 4.3 schematics ............. .............. .............. .............. .............. ..........25 4.4 parts list.............. ................. .............. .............. .............. ..........32 4.2 overview a set of schematics for the sm os evm motor b oard appears in figure 4-1 up to figure 4-5 . an overview of the whole board is presented in figure 4-1 (or figure 4-1a ) . the 3-phase h-bridge, including gate driv er, is depicted in figure 4-2 . current feedbacks are presented in figure 4-3 . back-emf signals are shown in figure 4-4 . the brake control is illustrated in figure 4-5 . brushless dc motor connections are shown in figure 4-6 . unless otherwise specified, resistor values are in ohms, resistors are specified as 1/8 watt 5 %, and interrupted lines coded with the same letters are electrically connected. 4.3 schematics the schematics for the smartmos evaluation motor board are rendered on the following pages. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 26 schematics and parts list motorola schematics and parts list figure 4-1 smos evm moto r board ver. 140a01 overview pwm_cb shielding_a pwm_bb pwm_bt pwm_ab brake_control zero_cross_c bemf_sense_a identification i_sense_a v_sense_dcb shielding_a driver mode control jumpers i_reconst_dcb pwm_ct shielding_d pwm_ctrl pwm_at bemf_sense_c i_sense_b shielding_d i_sense_c +12v_a shielding_d shielding_d shielding_d zero_cross_b zero_cross_a bemf_sense_b mode0 mode1 3-ph. h-bridge driver hse_at lse_ab phase_a phase_b phase_c hse_bt lse_bb hse_ct lse_cb dcb_pos_in dcb_neg v_sense_dcb_half v_sense_dcb i_sense_a2 i_sense_a1 i_sense_b1 i_sense_b2 i_sense_c1 i_sense_c2 pwm_in mode0 mode1 i_zero_ref i_reconst_dcb gnd +5v_d dcb_pos brake_control +3.3v_a gnda back emf phase_b gnda +5v_d bemf_sense_c zero_cros_c zero_cros_b phase_a bemf_sense_a v_sense_dcb_half phase_c zero_cros_a bemf_sense_b gnd identification current processing i_reconst_dcb gnda +3.3v_a i_sense_a2 i_sense_a1 i_sense_b1 i_sense_b2 i_sense_c1 i_sense_c2 i_sense_a i_sense_b i_sense_c i_zero_ref uni-24 dcb_neg uni-21 uni-35 uni-9 uni-29 uni-36 uni-11 uni-1 uni-22 uni-23 uni-7 uni-19 uni-25 uni-30 uni-34 uni-3 uni-5 uni-38 uni-31 dcb_pos dcb_pos_in uni-39 uni-40 pwm_h pwm_h dcb_neg dcb_neg dcb_neg gnd gnd gnd gnd +5v_d gnda gnda +5v_d +3.3v_a +5v_d +5v_d gnd gnd +5v_d +3.3v_a gnda gnd +3.3v_a gnd +3.3v_a gnda gnda gnda gnda gnd gnd gnda gnda gnda gnda gnd gnda gnda +5v_d gnd gnd +5v_d +3.3v_a gnd gnd gnda j2 amp 640387-3 1 2 3 c7 100nf jp3 sm/jumper1x3 1 2 3 d1 1.5smc15at3 l1 1mh u16 mc7805 1 3 2 in out gnd + c3 22uf/20v dcb_pos c12 100nf r2 220k j8 faston gc1 gnd_connection d3 sm/1n4001 u1b mc74hc14a 3 4 14 dcb_half 1 gc2 gnd_connection gnd r1 680 +5v_d c10 100nf +3.3v_a c6 100nf d2 led green gnd j5 faston gnda j1 con/40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 j7 faston r3 100k tp2 1 jp4 con/2screws/big 1 2 u2 mc78pc33ntr 1 5 2 3 vin vout gnd ce u1a mc74hc14a 1 2 14 7 + c4 10uf/6.3v l2 1mh c8 100nf c5 100nf j3 power jack 1 2 3 +v -v -v jp2 sm/jumper1x3 1 2 3 sw1 rotary switch 3 2 1 4 c b a x + c1 22uf/20v j4 con/3screws 1 2 3 d4 sm/1n4001 c11 100nf + c9 22uf/20v f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola schematics and parts list 27 schematics and parts list schematics figure 4-1a smos evm motor board ver. 140a02 overview 5 4 3 2 1 uni-24 dcb_neg uni-21 uni-35 uni-9 uni-29 uni-36 uni-11 uni-1 uni-22 uni-23 uni-7 uni-19 uni-25 uni-30 uni-34 uni-3 uni-5 uni-38 uni-31 dcb_pos dcb_pos_in uni-39 uni-40 pwm_h pwm_h pwm_ctrl gnd gnd gnd gnd +5v_d +5v_d +3.3v_a +5v_d +5v_d gnd gnd +5v_d gnd +3.3v_a gnd +3.3v_a gnda gnda gnd gnd gnda gnda gnda gnd gnda +5v_d gnd +3.3v_a gnda gnd gnda gnda gnd +5v_d +3.3v_a gnda gnda gnda gnd gnd gnda gnda dcb_neg dcb_neg dcb_neg pwm_cb shielding_a pwm_bb pwm_bt pwm_ab brake_control zero_cross_c bemf_sense_a identification i_sense_a v_sense_dcb shielding_a driver mode control jumpers i_reconst_dcb pwm_ct shielding_d pwm_ctrl pwm_at bemf_sense_c i_sense_b shielding_d i_sense_c +12v_a shielding_d shielding_d shielding_d zero_cross_b zero_cross_a bemf_sense_b mode0 mode1 ph b uni-24 ph a uni-23 ph c uni-25 pwm j2 amp 640387-3 1 2 3 3-ph. h-bridge driver hse_at lse_ab phase_a phase_b phase_c hse_bt lse_bb hse_ct lse_cb dcb_pos_in dcb_neg v_sense_dcb_half v_sense_dcb i_sense_a2 i_sense_a1 i_sense_b1 i_sense_b2 i_sense_c1 i_sense_c2 pwm_in mode0 mode1 i_zero_ref i_reconst_dcb gnd +5v_d dcb_pos brake_control +3.3v_a gnda c7 100nf jp3 sm/jumper1x3 1 2 3 d1 1.5smc18at3 l1 1mh dcb_pos u16 mc7805 in 1 out 3 gnd 2 + c3 22uf/20v c12 100nf r2 220k j8 faston gc1 gnd_connection d3 sm/1n4001 u1b mc74hc14a 3 4 14 dcb_half 1 gc2 gnd_connection gnd r1 680 +5v_d c10 100nf +3.3v_a d2 led green c6 100nf j5 faston gnd r5 3.3k j1 con/40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 gnda j7 faston r3 100k tp2 1 jp4 con/2screws/big 1 2 back emf phase_b gnda +5v_d bemf_sense_c zero_cros_c zero_cros_b phase_a bemf_sense_a v_sense_dcb_half phase_c zero_cros_a bemf_sense_b gnd identification sw1 pushbutton reset 1 3 2 4 u2 mc78pc33ntr vin 1 vout 5 gnd 2 ce 3 u1a mc74hc14a 1 2 14 7 l2 1mh + c4 10uf /6.3v c8 100nf c5 100nf j3 power jack +v 1 -v 2 -v 3 current processing i_reconst_dcb gnda +3.3v_a i_sense_a2 i_sense_a1 i_sense_b1 i_sense_b2 i_sense_c1 i_sense_c2 i_sense_a i_sense_b i_sense_c i_zero_ref jp2 sm/jumper1x3 1 2 3 jp5 sm/jumper1x3 1 2 3 r4 1.5k j4 con/3screws 1 2 3 + c1 22uf/20v d4 sm/1n4001 c11 100nf + c9 22uf/20v f r e e s c a l e s e m i c o n d u c t o r i freescale semiconductor inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t g o t o w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 28 schematics and parts list motorola schematics and parts list figure 4-2 3-phase h-bri dge with gate driver 3.30v @ 16v 3.0v @ 16v +5v_d needed brake control dcb_brake dcb_neg dcb_pos phase_a phase_c phase_b phase_a phase_c phase_b gate_cb gate_ab gate_at gate_ct gate_bt gate_bb dcb_ign dcb_pos vgdh dcb_neg dcb_pos dcb_neg gate_bt gate_ct gate_cb gate_ab dcb_neg gate_at dcb_pos dcb_ign gate_bb vgdh gnd +5v_d +5v_d +3.3v_a gnd gnd +5v_d +3.3v_a gnda gnda gnd r106 1 20 -1% r108 1.8k-1% r120 51 r117 10k d101 mbrm140t3 r132 100k r128 51 r119 51 u104c dm74als 1034m 5 6 c105 10nf d103 mbrm140t3 r127 51 r113 10k r131 10k/trimr/spectrol/64y 1 3 2 r122 51 sense sense r102 pma-a-r030-1 d102 mbrm140t3 + c102 330uf/35v r118 10k r124 51 c108 100nf c109 100nf r133 100k r121 51 + c103 330uf/35v r123 51 c104 150nf r114 10k + c101 330uf/35v d104 mbrm140t3 u104e dm74als 1034m 11 10 u104f dm74als 1034m 13 12 c106 10nf r125 51 r126 51 r130 51 u104b dm74als 1034m 3 4 r110 10k u104d dm74als 1034m 9 8 d106 mbrm140t3 q101 mtd3302t4 r129 51 r115 10k q102 mtd3302t4 q104 mtd3302t4 q103 mtd3302t4 u103 pc33395 1 2 3 4 24 22 23 21 5 6 7 20 19 18 17 8 15 12 16 14 9 13 10 11 30 31 29 26 25 28 32 27 c2h cres vign vgdh hse3 mode1 mode0 pwm vignp s1 gdh1 vdd gnd is+ is- gdl1 pgnd s3 tlim gdl3 s2 gdh3 gdh2 gdl2 c1l c1h lse1 hse1 hse2 lse2 c2l lse3 q105 mtd3302t4 sense sense r103 pma-a-r030-1 q106 mtd3302t4 r111 10k sense sense r101 pma-a-r030-1 r107 18 0 -1% u104a dm74als 1034m 1 2 14 7 r116 10k r109 1. 2 k-1% r105 2. 7 k-1% r104 10k-1% c107 1uf r112 10k q107 mtd3302t4 d105 mbrm140t3 phase_b dcb_pos_in phase_c phase_a i_sense_b2 i_sense_b1 i_sense_c1 i_sense_c2 i_sense_a1 i_sense_a2 +5v_d dcb_neg brake_control gnd v_sense_dcb dcb_pos v_sense_dcb_half mode0 hse_at lse_ab pwm_in i_reconst_dcb lse_bb mode1 i_zero_ref +3.3v_a hse_bt hse_ct lse_cb gnda f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola schematics and parts list 29 schematics and parts list schematics figure 4-3 current feedback circuits 1.65v +/- 1.65v @ +/- imax delta = +/-288 mv @ +/- imax 1.65v ref delta = +/-288 mv @ +/- imax 1.65v +/- 1.65v @ +/- imax delta = +/-288 mv @ +/- imax 1.65v +/- 1.65v @ +/- imax 1.65v ref +3.3v_a +3.3v_a +3.3v_a gnda gnda gnda gnda gnda gnda gnda +3.3v_a u303 lm285m 8 5 4 r306 100k-1% r310 6k8-1% r315 39k-1% r312 39k-1% 1.65vref 1 + - u302b mc33502d 5 6 7 r307 33k-1% r311 39k-1% r305 390 r316 33k-1% r308 39k-1% r302 6k8-1% r303 6k8-1% r319 33k-1% c301 100nf + - u301b mc33502d 5 6 7 c302 100nf + - u302a mc33502d 3 2 1 8 4 r301 39k-1% c303 100nf r313 6k8-1% r304 39k-1% r318 33k-1% r317 33k-1% r309 6k8-1% + - u301a mc33502d 3 2 1 8 4 r314 6k8-1% i_sense_c2 gnda i_sense_c1 +3.3v_a i_sense_a2 i_sense_a1 i_sense_a i_sense_b2 i_reconst_dcb i_zero_ref i_sense_c i_sense_b1 i_sense_b f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 30 schematics and parts list motorola schematics and parts list figure 4-4 back-emf signals max. 16v u+ <6v u+ =2*v_sense_dcb_h alf@3.3v 3.30v @ phase_c = 16v max. 16v 3.30v @ phase_b = 16v u+ <6v u+ =2*v_sense_dcb_h alf@3.3v u+ <6v u+ =2*v_sense_dcb_h alf@3.3v 3.30v @ phase_a = 16v max. 16v frequency: 1500hz +/-20% +5v_d gnda gnda gnda +5v_d gnda gnd gnda gnda gnda gnd gnda +5v_d gnd +5v_d +5v_d gnd gnd +5v_d r206 5.6k r224 33k r225 33k r213 5.6k r226 33k r220 5.6k r209 1m c203 100nf + - u201d lm339d 11 10 13 r215 1m c201 100pf r201 10k-1% r207 3.3k-1% r203 2.7k-1% c202 100pf c204 100pf c205 22pf r208 10k-1% r214 3.3k-1% r210 2.7k-1% r216 10k-1% r221 3.3k-1% r217 2.7k-1% + - u201a lm339d 5 4 2 3 12 c206 47nf r204 10k + - u201b lm339d 7 6 1 r211 10k r212 10k r218 10k + - u201c lm339d 9 8 14 r202 1m r219 10k r205 10k r222 10k r223 10k phase_b gnda +5v_d bemf_sense_c zero_cros_c zero_cros_b phase_a bemf_sense_a v_sense_dcb_half phase_c zero_cros_a bemf_sense_b gnd identification f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . schematics and parts list schematics 33395 evaluation motor board DRM33395 designer reference manual motorola schematics and parts list 31 figure 4-5 brake control figure 4-6 brushless dc moto r connections - schematic view c402 100nf outb inb gnd ina nc nc outa vcc u401 mc33152d 2 3 5 6 7 8 1 4 r402 100 r403 1r brake 1 r401 10k d401 mbrs330 c401 1nf r404 100 q401 mtd3302t4 dcb_pos dcb_neg dcb_brake motorola embedded motion control series phase_c phase_b phase_a brushless + 12 vdc 56800(e) evaluation module or 40-pin ribbon cable 1 2 3 4 5 motor hc08 control board motorola embedded motion control series smos evm motor board 3 2 1 hall/encoder connector white/red white/yellow white/black + ? j1 hall c (blue) hall b (white) hall a (green) gnd (black) +5v (red) or hcs12 control board or mpc evaluation module j3/jp4 j2/j4 j5,j7,j8 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 32 schematics and parts list motorola schematics and parts list 4.4 parts list the smos evm motor board?s list of pa rts is described in the following table. table 4-1 parts list (sheet 1 of 4) qty. reference part value description mfg. mfg. part no. 3 c1, c3, c9 22 f/25 v tantalum capacitor, d, 22 f/20 v, 10%, esr 0.2 avx 1 c4 10 f/ 6.3 v tantalum capacitor, a, 10 f/6.3 v, 10% avx, elna 14 c5, c6, c7, c8, c10, c11, c12, c108, c109, c203, c301, c302, c303, c402 100 nf capacitor, 0805, ceramic 100 nf/25 v, z5u, 20% vishay vitramon 3 c101, c102, c103 330 f/35 v electrolytic capacitor 330 f/35 v, type re2 elna 1 c104 150 nf ceramic capacitor, 0805, 150 nf, 5% vishay vitramon 2 c105, c106 10 nf ceramic capacitor, 0805, 10 nf, 5% vishay vitramon 1c107 1 uf polyester capacitor 1uf/63v, 10%, type mkt 220-7 epcos 3 c201, c202, c204 100 pf ceramic capacitor, 0805, 100 pf, 5% vishay vitramon 1 c205 22 pf ceramic capacitor, 0805, 22 pf, 5% vishay vitramon 1 c206 47 nf ceramic capacitor, 0805, 47 nf, 5% vishay vitramon 1c401 1 nf ceramic capacitor, 0805, 1 nf, 5% vishay vitramon 1d1 1.5smc18at3 zener transient vol- tage suppressor 18v on semiconductor 1.5smc18at3 1d2 led green led diode, smd, 20 ma, green kingbright aa3528sgt 2 d3, d4 1n4001 general purpose axial rectifier 50v, 1a on semiconductor 1n4001 6 d101, d102, d103, d104, d105, d106 mbrm140t3 shottky rectifiers 40 v, 1a on semiconductor mbrm140t3 1 d401 mbrs330 schottky rectifier 30v, 3a on semiconductor mbrs330 3 jp2, jp3, jp5 jumper1x3 jumper, 3-pin header, 0.1?, m20-973 type harwin f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . schematics and parts list parts list 33395 evaluation motor board DRM33395 designer reference manual motorola schematics and parts list 33 1 jp4 con/2screws 2 screws pcb terminal, 5mm pin spacing wago 237-132 1 j1 con/40 header 40 pins breakaway connector fischer elektronik aslg40g 1 j2 amp 640387-3 header 3 pins amp 640387-3 1 j3 power jack power jack type connector 2.5 mm cui stack pj-002 1 j4 con/3screws 3 screws pcb terminal, 5mm pin spacing wago 237-133 3 j5, j7, j8 faston faston connector v90p vertical, 6.3mm wide amp 2 l1, l2 1 mh inductor 1 mh, 0.2 a epcos 8 q101, q102, q103, q104, q105, q106, q107, q401 mtd3302t4 power n mosfet transistor, 30 v, 18 a on semiconductor mtd3302t4 1 r1 680r resistor 680 ? , 5%, 0805 vishay dale 1 r2 220k resistor 220 k ? , 5%, 0805 vishay dale 3 r3, r132, r133 100k resistor 100 k ? , 5%, 0805 vishay dale 1r4 1.5k resistor 1.5k ?, 5%, 0805 vishay dale 1r5 3.3k resistor 3.3k ?, 5%, 0805 vishay dale 3 r101, r102, r103 pma-a-r030-1 sensing resistor with kelvin terminals, 30 m ? , 1% isabellenhuette pma-a-r030-1 4 r104, r201, r208, r216 10k-1% resistor 10 k ? , 1%, 0805 vishay dale 4 r105, r203, r210, r217 2.7k-1% resistor 2.7 k ? , 1%, 0805 vishay dale 1 r106 120-1% resistor 120 ? , 1%, 0805 vishay dale 1 r107 180-1% resistor 180 ? , 1%, 0805 vishay dale 1 r108 1k8-1% resistor 1.8 k ? , 1%, 0805 vishay dale 1 r109 1k2-1% resistor 1.2 k ? , 1%, 0805 vishay dale table 4-1 parts list (sheet 2 of 4) qty. reference part value description mfg. mfg. part no. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 34 schematics and parts list motorola schematics and parts list 18 r110, r111, r112, r113, r114, r115, r116, r117, r118, r204, r205, r211, r212, r218, r219, r222, r223, r401 10k resistor 10 k ? , 5%, 0805 vishay dale 12 r119, r120, r121, r122, r123, r124, r125, r126, r127, r128, r129, r130 51r resistor 51 ? , 5%, 0805 vishay dale 1 r131 10k/trimmer cermet-trimmer 10 k ? , 0.15w, 4315-smd hinkel-elektronik 3 r202, r209, r215 1m resistor 1 m ? , 5%, 0805 vishay dale 3 r206, r213, r220 5.6k resistor 5.6 k ? , 5%, 0805 vishay dale 3 r207, r214, r221 3k3-1% resistor 3.3 k ? , 1%, 0805 vishay dale 3 r224, r225, r226 33k resistor 33 k ? , 5%, 0805 vishay dale 6 r301, r304, r308, r311, r312, r315 39k-1% resistor 39 k ? , 1%, 0805 vishay dale 2 r302, r303, r309, r310, r313, r314 6k8-1% resistor 6.8 k ? , 1%, 0805 vishay dale 1 r305 390r resistor 390 ? , 5%, 0805 vishay dale 1 r306 100k-1% resistor 100 k ? , 1%, 0805 vishay dale 5 r307, r316, r317, r318, r319 33k-1% resistor 33 k ? , 1%, 0805 vishay dale 2 r402, r404 100r resistor 100 ? , 5%, 0805 vishay dale 1r403 1r resistor 1 ? , 1%, sqm type, 5-7w meggit cgs 1 sw1 (only in 140a01 board version) rotary switch rotary switch, rte03 type, 3 positions itt cannon 1 sw1 (only in 140a02 board version) pushbutton tactile smd switch, b3s-1000 type, 6x6mm omron rs#183-701 1 u1 mc74hc14a hex schmitt inverter on semiconductor mc74hc14a 1 u2 mc78pc33ntr linear voltage regulator on semiconductor mc78pc33ntr table 4-1 parts list (sheet 3 of 4) qty. reference part value description mfg. mfg. part no. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . schematics and parts list parts list 33395 evaluation motor board DRM33395 designer reference manual motorola schematics and parts list 35 1 u16 mc7805 positive voltage regulator, 5v, 1a on semiconductor mc7805act 1 u103 mc33395 3-phase gate driver motorola mc33395t 1 u104 dm74als1034m hex non-inverting driver fairchild dm74als1034m 1 u201 lm339d quad comparator on semiconductor lm339d 2 u301, u302 mc33502d operational amplifier, rail-to-rail on semiconductor mc33502d 1 u303 lm285m adjustable voltage reference on semiconductor lm285m 1 u401 mc33152d high-speed dual mosfet driver on semiconductor mc33152d table 4-1 parts list (sheet 4 of 4) qty. reference part value description mfg. mfg. part no. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 36 schematics and parts list motorola schematics and parts list f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . 33395 evaluation motor board DRM33395 designer reference manual motorola design considerations 37 33395 evaluation motor board section 5. design considerations 5.1 contents 5.2 overview............ ................ ................. .............. .............. ..........37 5.3 3-phase h-bridge ............ ................ ................. .............. ..........37 5.4 bus voltage and current feedback si gnals.............. ............... 38 5.5 back-emf signals ......... ................ ................. ................ .......... 40 5.6 brake control ............. ................. ................ ................. ............ 41 5.2 overview from a systems point of view, the smos evm moto r board kit fits into an architecture that is designed for application development. in addition to the hardware that is needed to run a motor, a variety of feedback signals that facilitate control al gorithm developm ent are provided. the smos evm motor board?s power output stage is a complementary mos field effect transisto r (mosfet) 3-phase bridge that is capable of supplying and sensing 8 amps of co ntinuous current. feedback signals include bus voltage, pha se currents, reconstructed bus current, back-emf (electromotive force), and zero crossing. the following sections describe these features. 5.3 3-phase h-bridge use of the motorola integrat ed 3-phase gate driver, mc33395, considerably simplifies control of t he output stage which is configured as a 3-phase h-bridge with six co mplementary n-mosfet output transistors. together with external components this device provides f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 38 design considerations motorola design considerations reverse battery protection, a high-side, mosfet switch, pwm frequencies up to 28 khz and built-in pr otective circuitry to prevent damage to the mosfet bridge and the dr ive?s ic, and includes: thermal (not used), over-current, over-v oltage (>27v) and under-voltage (<4v) shutdown. a schematic is shown in figure 4-2 . at the input, pulldown resistors r110 thru r118 set logic low in the absence of a signal. open input pull down is important, since it is desirable to keep the power transistors off in case of either a broken connection or absence of power on the control board. in order to accept 5-volt mcus and 3.3-volt dsps, a fairchild non-inverting driver dm74als1034m unifies the level of t he lsex and hsex input signals. this component has a minimum high- state logic 1 i nput voltage of 2.0 volts, and a maximum low-state logic 0 input voltage of 0.8 volts. the smos evm motor board will thus enable the connection of large number of controller boards with variou s mcus or dsps, for example mc68hc908, hcs12, mp c555, dsp56f8xx(e), etc. under-voltage lockout is not included in the gate drive. if this fe ature is desired, the control board?s under-vol tage detection comparat or can be set for 0.85 volts. 5.4 bus voltage and current feedback signals feedback signals proporti onal to bus voltage, phase currents and reconstructed bus current ar e provided in this section. bus voltage is scaled down by a vo ltage divider cons isting of r104, r105, r106, r107, r108, and r19. the values ar e chosen such that a 16-volt maximum bus voltage corres ponds to a 3.3-volt maximum analog-to-digital (a/d) input. figure 5-1 depicts the dc bus voltage circuitry. phase current s are sampled by resist ors r101, r102 and r103 in figure 4-2 and amplified by the circuit in figure 5-1 , which shows the circuitry for phase a. th is circuit provides a voltage output suitable for sampling with a/d inputs. an mc33502 is used as a differential amplifier. the gain is given by: a = r301/r302 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . design considerations bus voltage and current feedback signals 33395 evaluation motor board DRM33395 designer reference manual motorola design considerations 39 the output voltage is shifted up by 1.65 v into the middle of the converter range, to accommodate both positiv e and negative current swings. a 300-mv voltage drop across the shun t resistor corresponds to a measured current range of 10 amps (peak value) , again with 3.3v maximum on the output. the smos evm motor boar d measures and limits current according to a reconstructed bus current value t hat inverts swings of phase current signals and also shifts the output up by 1.65v with gain a=1. its significance is adjustable with a tr immer, r131, used for setting an over-current comparat or implemented in t he smos driver. this comparator disables t he driver outputs when the is- (the driv er pin) voltage rises above is+, see figure 5-2 . this happens when the following is true: is- is+ ? v is+off 0.08 * imax dcb + 1.65 [v; a] caution: the value, v is+ > 2.45v, disables the over -current circui t protection functionality since the value on the v is- pin is always smaller than 2.45 volts. allo wing a larger v is+ value can lead to permanent damage of the board if a current higher than 18 amps is applied! for resetting board faults see step 6 in chapter 1.5 . figure 5-1 phase current and dc bus voltage sensing + ? r302 6k8 -1% r303 6k8 -1% r304 39 k-1% r306 100 k-1% r307 33 k-1% gnda lm285m u303 r305 390 ? +3.3v_a i_sense_a1 i_sense_a2 5 4 8 1.65 vref i_sense_a r301 39 k-1% 2 3 1 u301a mc33502d dcb_pos dcb_neg r104 10 k-1% 2.7 k-1% r105 v_sense_dcb r108 1.2 k-1% 1.8 k-1% r109 180 ? -1% r107 120 ? -1% r106 v_sense_dcb_half f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . DRM33395 designer reference manual 33395 evaluation motor board 40 design considerations motorola design considerations figure 5-2 reconstructed bus current 5.5 back-emf signals back-emf and zero crossing signals ar e included to support sensorless algorithms for brushless dc motors. referring to figure 5-3 , which shows the circuitry for phase c, the raw phase voltage is scaled down by a voltage divider consisting of r216, r217, and r221. one output from this divider, bemf_sense_c pr oduces back-emf sense voltage. resistor values are chosen such that a 16-volt maximum phase voltage corresponds to a 3.3-vo lt maximum a/d input. a zero crossing signal is obtained by comparing the motor phase voltage with ? the value of the motor bus voltage. comparator u201a performs this function, produc ing a zero crossing signal, zero_cross_c. figure 5-3 phase c back-emf feedback + ? r305 390 ? +3.3v_a +1.65v i_reconst_dcb r316 33 k-1% 2 3 1 u302a mc33502d r317 33 k-1% i_sense_a r318 33 k-1% r319 33 k-1% i_sense_b i_sense_c r132 100 k r133 100 k gnda r131 10 k 1 3 2 c108 100 nf is- (pin 17 of u103) is+ (pin 18 of u103) gnda = ? + gnda gnda gnda 10 k-1% r216 r217 2.7 k-1% r221 3 .3 k-1% 10 k r218 c204 100 pf r220 5.6 k c205 22 pf v_sense_dcb_half r215 1 m 10 k r219 +5v_d u201a lm339d 4 5 12 2 zero_cross_c bemf_sense_c phase_c f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . design considerations brake control 33395 evaluation motor board DRM33395 designer reference manual motorola design considerations 41 5.6 brake control a brake circuit is includ ed to dissipate re-generat ive motor energy during periods of active deceler ation or rapid reversal. under there conditions, motor back-emf adds to the dc bu s voltage. without a means to dissipate excess energy, an over-volta ge condition could easily occur. the circuit shown in figure 4-5 connects r403 across the dc bus to dissipate energy. the transi stor q401 is turned on by software when the bus voltage sensing circuit in figure 5-1 indicates that the bus voltage could exceed safe levels. on-boar d power resistor r403 will safely dissipate up to 5 watts continuously or up to 50 watts for 5 seconds. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . how to reach us: usa/europe/locations not listed: motorola literature distribution p.o. box 5405 denver, colorado 80217 1-800-521-6274 or 480-768-2130 japan: motorola japan ltd. sps, technical in formation center 3-20-1, minami-azabu, minato-ku tokyo 106-8573, japan 81-3-3440-3569 asia/pacific: motorola semiconductors h.k. ltd. silicon harbour centre 2 dai king street tai po industrial estate tai po, n.t., hong kong 852-26668334 home page: http://motorola.com/semiconductors DRM33395/d rev. 2 05/2003 information in this document is provided solely to enable system and software implementers to use motorola products. there are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability , including without limitation consequential or incidental damages. ?typical? parameters that may be provided in motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals?, must be validated for each customer application by customer?s technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surg ical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the motorola product cou ld create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and the stylized m logo are registered in the us patent and trademark office. all other product or service names are the property of their respective owners. motorola, inc. is an equal opportunity/affirmative action employer. ? motorola inc. 2003 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . . |
Price & Availability of DRM33395
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |