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1 publication date: july 2009 sdl00015aeb data sheet part no. package code no. AN44069A hsop042-p-0400d
AN44069A 2 sdl00015aeb contents ? overview ????????????????????.????????????????????? 3 ? features ???????????????????.?????????????????????? 3 ? applications ???????????????????.????????????????????? 3 ? package ???????????????????.??????????????????????. 3 ? type ?????????????????????.??????????????????????. 3 ? application circuit example ????????????????????????????????? 4 ? pin descriptions ????????????????.?????????????????????? 5 ? absolute maximum ratings ????????????.????????????????????? 6 ? operating supply voltage range ????????.????????? ?????????????? 6 ? allowable current and voltage range ???????????? ????????????????.. 7 ? electrical characteristics ?????.????????????????????????????? 8 ? electrical characteristics (reference values for design) ?????.????????????????. 10 ? technical data ????????????????.??????????????????????? 11 y i/o block circuit diagrams and pin f unction descriptions ? ????????????? ???????. 11 y control mode ????????????????.??????????????????????? 16 y p d ? t a diagram ?????????????????????????????????????. 21 ? usage notes ????????????????. ????????????? ??????????. 22 y special attention and precaution in using ????????? ???????????? ??????. 22 y notes of power lsi ????????????????????????????????????. 23
AN44069A 3 sdl00015aeb AN44069A driver ic for stepping motor ? overview AN44069A is a two channels h-bridge driver ic. bipolar st epping motor can be controlled by a single driver ic. 2-phase, half-step, 1-2 (type2) ph ase, w1-2 phase can be selected. ? features y 4-phase input control (w1- 2 phase excitation enabled) y built-in cr chopping (with frequency selected) y built-in thermal protection and low voltage detection circuit y built-in 5 v power supply ? applications y ic for stepping motor drives ? package y 28 pin plastic small outline package with heat sink (sop type) ? type y bi-cdmos ic
AN44069A 4 sdl00015aeb ? application circuit example notes) this application circuit is shown as an example but does not guarantee the de sign for mass production set. charge pump 21 vpump bc1 19 bc2 20 gate circuit phb1 2 in3 6 in2 5 vrefb 24 13 rcsb 12 bout2 14 bout1 gate circuit pha1 1 enablea 7 in0 3 in1 4 vrefa 23 16 rcsa 17 aout1 15 aout2 blank osc tsd uvlo reg 8 vm1 22 vm2 25 vcc vm s5vout 27 26 gnd tjmon 10 pwmsw pwmsw 28 0.01 f 0.01 f 0.1 f 47 f 0.1 f enableb 9 r s q r q s
AN44069A 5 sdl00015aeb ? pin descriptions die pad ground (n.c.) ? fin fin phase b torque reference voltage input input vrefb 24 phase a torque refe rence voltage input input vrefa 23 motor power supply 2 power supply vm2 22 charge pump circuit output output vpump 21 charge pump capacitor connection 2 output bc2 20 charge pump capacitor connection 1 output bc1 19 n.c. ? n.c. 18 phase a motor drive output 1 output aout1 17 pwm frequency selection input input pwmsw 28 internal reference voltage (5 v output) output s5vout 27 signal ground ground gnd 26 signal power supply power supply vcc 25 phase a current detection input / output rcsa 16 phase a motor drive output 2 output aout2 15 phase b motor drive output 1 output bout1 14 phase b current detection input / output rcsb 13 phase b motor drive output 2 output bout2 12 n.c. ? n.c. 11 vbe monitor use output tjmon 10 phase b enable/disable ctl input enableb 9 motor power supply 1 power supply vm1 8 phase a enable/disable ctl input enablea 7 phase b output torque control 2 input in3 6 phase b output torque control 1 input in2 5 phase a output torque control 2 input in1 4 phase a output torque control 1 input in0 3 phase b phase selection input input phb1 2 phase a phase selection input input pha1 1 description type pin name pin no.
AN44069A 6 sdl00015aeb ? absolute maximum ratings *3 c *3 c *2 w *1 v storage temperature 5 operating ambient temperature 4 power dissipation 3 supply voltage 2 (pin 25) 2 ?20 to +70 t opr ?55 to +150 t stg 0.717 p d *4 v 37 v out output pin voltage (pin 12, 14, 15, 17) 6 ?0.3 to +6 v cc notes unit rating symbol parameter a no. *4 a 1.5 i f flywheel diode current (pin 12, 14, 15, 17) 8 *4 a 1.5 i out motor drive current (pin 12, 14, 15, 17) 7 *1 v 37 v m supply voltage 1 (pin 8, 22) 1 notes) *1 : the values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2 : the power dissipation shown is the value at t a = 70 c for the independent (unmounted) ic package without a heat sink. when using this ic , refer to the p d -t a diagram of the package standard and design the heat radiation with sufficie nt margin so that the allowable value might not be exceeded based on the conditi ons of power supply voltage, load, and ambient temperature. *3 : except for the power dissipation, operating ambient temp erature, and storage temperature, all ratings are for t a = 25 c. *4 : do not apply current or voltage from outside to any pin not listed above. in the circuit current (+) means the current flowing in to ic and (?) means the current flowing out of ic. note) absolute maximum ratings are limit values which are not dest ructed, and are not the values to which operation is guarantee d. ? operating supply voltage range * v supply voltage range 2 supply voltage range 1 * 4.5 to 5.5 v cc notes unit range symbol parameter v 16.0 to 34.0 v m note) * : the values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
AN44069A 7 sdl00015aeb ? v ?0.3 to 6 pha1 1 ? v ?0.3 to 6 phb1 2 ? v ?0.3 to 6 in0 3 ? v ?0.3 to 6 in1 4 ? v ?0.3 to 6 in2 5 ? v ?0.3 to 6 in3 6 ? v ?0.3 to 6 enablea 7 ? v ?0.3 to 6 enableb 9 ? v 2.5 rcsb 13 ? v 2.5 rcsa 16 *1 v v m + 0.3 bc1 19 *1 v (v m ?1) to43 bc2 20 *1 v (v m ?1)to43 vpump 21 ? v ?0.3 to 6 vrefa 23 ? v ?0.3 to 6 vrefb 24 ? v ?0.3 to 6 pwmsw 28 notes unit rating pin name pin no. *1 ma ?7 to 0 s5vout 27 notes unit rating pin name pin no. ? allowable current and voltage range notes) y voltage values, unless otherwise specified, are with respect to gnd. y do not apply external currents or voltages to any pin not specifically mentioned. y for the circuit currents, "+" denotes current flowing into the ic, and " ? " denotes current flowing out of the ic. notes) *1 : external voltage must not be applied to these pins. de sign so that the voltage does no t exceed ratings even transien tly.
AN44069A 8 sdl00015aeb ? a 15 D ?15 pwmsw = 0 v i pwmswl low-level pwmsw input current 22 ? a 66 33 16.5 pwmsw = 3.3 v i pwmswh high-level pwmsw input current 21 ? v 0.6 ? 0 ? v pwmswl low-level pwmsw input voltage 20 ? v v cc ? 2.2 ? v pwmswh high-level pwmsw input voltage 19 ? a 15 D ?15 enablea = enableb = 0 v i enableal i enablebl low-level enablea, enableb input current 18 ? a 10 D ?10 enablea = enableb = 5 v i enableah i enablebh high-level enablea, enableb input current 17 ? v 0.6 ? 0 ? v enableal v enablebl low-level enablea, enableb input voltage 16 ? v v cc ? 2.2 ? v enableah v enablebh high-level enablea, enableb input voltage 15 ? a 15 D ?15 pha1 = phb1 = 0 v i phal i phbl low-level pha1, phb1 input current 14 ? a 66 33 16.5 pha1 = phb1 = 3.3 v i phah i phbh high-level pha1, phb1 input current 13 ? v 0.6 ? 0 ? v phal v phbl low-level pha1, phb1 input voltage 12 ? v v cc ? 2.2 ? v phah v phbh high-level pha1, phb1 input voltage 11 ? a 15 D ?15 in0 = in1 = in2 = in3 = 0 v i inl low-level in input current 10 ? a 10 D ?10 in0 = in1 = in2 = in3 = 5 v i inh high-level in input current 9 ? v 0.6 ? 0 ? v inl low-level in input voltage 8 ? v m = 37 v, v rcs = 0 v i = 0.8 a ? v 1.5 1.0 0.5 i = 0.8 a v di flywheel diode forward voltage 3 ? a 20 10 ? i leak1 output leakage current 1 4 ? ma 6 4 ? enablea = enableb = 5 v i m supply current 5 i/o block ? ma 2.2 1.4 ? enablea = enableb = 5 v i cc supply current (with two circuits turned off) 6 power block ? v ? v m ?0.50 v m ?0.75 i = ?0.8 a v oh high-level output saturation voltage 1 ? v 1.14 0.75 ? v ol low-level output saturation voltage 2 ? v v cc ? 2.2 v inh high-level in input voltage 7 limits typ unit max notes min conditions symbol parameter b no. ? electrical characteristics at v m = 24.0 v, v cc = 5.0 v note) t a = 25 c 2 c unless otherwise specified.
AN44069A 9 sdl00015aeb reference voltage block ? v 5.5 5.0 4.5 i s5vout = ?2.5 ma v s5vout reference voltage 30 ? mv 359 333 308 in0 = 2.2 v, in1 = 0.6 v in2 = 2.2 v, in3 = 0.6 v vt c comp threshold c (67%) 28 ? khz 35 26 17 pwmsw = 5 v f pwm2 pwm frequency 2 25 ? mv 525 500 475 in0 = in1 = 0.6 v in2 = in3 = 0.6 v vt h comp threshold h (100%) 27 ? khz 70 52 34 pwmsw = 0 v f pwm1 pwm frequency 1 24 ? a 125 100 83.3 v refa = 5 v v refb = 5 v i refa i refb input bias current 23 torque control block ? s 1.12 0.75 0.38 v refa = v refb = 0 v t b pulse blanking time 26 ? mv 184 167 151 in0 = 0.6 v, in1 = 2.2 v in2 = 0.6 v, in3 = 2.2 v vt l comp threshold l (33%) 29 ? 27 18 ? impedance of i s5vout = ?2.5 ma, ?5 ma z s5vout output impedance 31 limits typ unit max notes min conditions symbol parameter b no. ? electrical characteristics (continued) at v m = 24.0 v, v cc = 5.0 v note) t a = 25 c 2 c unless otherwise specified.
AN44069A 10 sdl00015aeb ? electrical characteristics (reference values for design) at v m = 24.0 v, v cc = 5.0 v notes) t a = 25 c 2 c unless otherwise specified. the characteristics listed below are reference values derived fr om the design of the ic and are not guaranteed by inspection. if a problem does occur related to these characteris tics, we will respond in good faith to user concerns. i/o block ? ? falling edge ? s ? 2.8 ? ? t d dead time 34 thermal protection ? oc ? 150 ? ? tsd on thermal protection operating temperature 35 ? oc ? 40 ? tsd thermal protection hysteresis width 36 output drivers ? v/ s ? 270 ? rising edge vt r output slew rate 1 32 ? v/ s ? 330 ? vt f output slew rate 2 33 *1 a ? 68 ? i phah2 i phbh2 i pwmswh2 high-level pha1, phb1, pwmsw input current 2 37 reference values typ unit max notes min conditions symbol parameter b no. note) *1 : for the input current characteristic of pha1, phb1 , and pwmsw, refer to usage notes described in page 33.
AN44069A 11 sdl00015aeb ? technical data y i/o block circuit diagrams and pin function descriptions note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. pin20 : charge pump capacitor connection 2 21: charge pump circuit output ? ? 20 21 pin 12 : phase b motor drive output 2 13 : phase b current detection 14 : phase b motor drive output 1 15 : phase a motor drive output 2 16 : phase a current detection 17 : phase a motor drive output 1 ? ? 12 13 14 15 16 17 impedance description internal circuit waveform and voltage pin no. 21 pin 12 bout2 14 bout1 15 aout2 17 aout1 pin 13 rcsb 16 rcsa 21 20 bc2 vpump 3k 3k 100k 100k 4k 150k 125
AN44069A 12 sdl00015aeb ? technical data (continued) y i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. pin 23 : phase a torque reference voltage input 24 : phase b torque reference voltage input 50 k ? 23 24 pin 19 : charge pump capacitor connection 1 ? ? 19 impedance description internal circuit waveform and voltage pin no. 19 bc1 pin23 vrefa 24 vrefb 150 200 4k 45k 4.96k 8.935k 2.231k
AN44069A 13 sdl00015aeb ? technical data (continued) y i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. pin 1 : phase a phase selection input 2 : phase b phase selection input 28 : pwm frequency selection 100 k ? 1 2 28 pin 27 : internal reference voltage (5 v-output) 102 k ? 27 impedance description internal circuit waveform and voltage pin no. 27 pin27 s5vout 2 phb1 pin 1 pha1 28 pwmsw 102k 2k 4k 100k 50k
AN44069A 14 sdl00015aeb ? technical data (continued) y i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. pin10 : vbe monitor ? ? 10 pin 3 : phase a output torque control 1 4 : phase a output torque control 2 5 : phase b output torque control 1 6 : phase b output torque control 2 7 : phase a enable/disable signal input 9 : phase b enable/disable signal input ? ? 3 4 5 6 7 9 impedance description internal circuit waveform and voltage pin no. 4 in1 5 in2 6 in3 7 enablea 9 enableb pin 3 in0 10 pin 10 tjmon 100k 4k 800
AN44069A 15 sdl00015aeb ? technical data (continued) y i/o block circuit diagrams and pin function descriptions (continued) note) the characteristics listed below are reference values derived from the design of the ic and are not guaranteed. ? ? D symbols impedance description internal circuit waveform and voltage pin no. vcc (pin 25) vm(pin 8, pin 22) diode zener diode ground
AN44069A 16 sdl00015aeb ? technical data (continued) y control mode 1. truth table off off ? "h" "h" "l" "l" "l" "l" aout2/bout2 "l" enablea/enableb "h" "h" aout1/bout1 pha1/phb1 (vref / 10) (1 / rs) (1 / 3) = i out "h" "l" 0 "h" "h" (vref / 10) (1 / rs) (2 / 3) = i out "l" "h" "l" in0/in2 (vref / 10) (1 / rs) = i out "l" output current in1/in3 note2) enablea = enableb = "h" or in0 = in1 = "h" / in2 = in3 = "h", all outputs transistors turn off at the same time. note 1) rs : current detection resistance
AN44069A 17 sdl00015aeb ? technical data (continued) y control mode (continued) 2. drive of full step (4steps sequence) (in0 to in3 = const.) a-ch. motor current v phb1 1234 fwd flow-in flow-out flow-in flow-out v pha1 b-ch. motor current 1234 rev flow-in flow-out flow-in flow-out a-ch. motor current b-ch. motor current v phb1 v pha1
AN44069A 18 sdl00015aeb ? technical data (continued) y control mode (continued) 3. drive of half step (8steps sequence) (ex.) fwd 1234 78 56 a-ch. motor current flow-in flow-out flow-in flow-out b-ch. motor current v phb1 v pha1 v in0 v in1 v in2 v in3 1234 78 56 rev a-ch. moto current flow-in flow-out flow-in flow-out b-ch. motor current v phb1 v pha1 v in0 v in1 v in2 v in3 rev fwd
AN44069A 19 sdl00015aeb ? technical data (continued) y control mode (continued) 4. 1-2 phase excitation (8steps sequence) (ex.) fwd 123456 78 a-ch. motor current flow-in flow-out flow-in flow-out b-ch. motor current v phb1 v pha1 v in0 v in1 v in2 v in3 rev 1 2 345678 a-ch. motor current flow-in flow-out flow-in flow-out b-ch. motor current v phb1 v pha1 v in0 v in1 v in2 v in3 rev fwd
AN44069A 20 sdl00015aeb ? technical data (continued) y control mode (continued) 5. w1-2 phase excitation (16steps sequence) 12345678910111213141516 fwd a-ch. motor current flow-in flow-out flow-in flow-out b-ch. motor current v phb1 v pha1 v in0 v in1 v in2 v in3 12345678910111213141516 rev a-ch. motor current flow-in flow-out flow-in flow-out b-ch. motor current v phb1 v pha1 v in0 v in1 v in2 v in3 rev fwd
AN44069A 21 sdl00015aeb ? technical data (continued) y p d ? t a diagram
AN44069A 22 sdl00015aeb y special attention and precaution in using 1. this ic is intended to be used for gene ral electronic equipment [stepping motor drive]. consult our sales staff in advance for in formation on the foll owing applications: x special applications in which ex ceptional quality and reli ability are required, or if the fail ure or malfunction of this ic may directly jeopardize life or harm the human body. x any applications other than the standard applications intended. (1) space appliance (such as artificial satellite, and rocket) (2) traffic control equipment (such as fo r automobile, airplane, train, and ship) (3) medical equipment for life support (4) submarine transponder (5) control equipment for power plant (6) disaster prevention and security device (7) weapon (8) others : applications of which reliability equivalent to (1) to (7) is required 2. pay attention to the direction of lsi. when mounting it in the wrong direction onto the pcb (printed-circuit-board), it might smoke or ignite. 3. pay attention in the pcb (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. in addition, refer to the pin description for the pin configuration. 4. perform a visual inspection on the pcb be fore applying power, otherwise damage might happen due to problems such as a solder- bridge between the pins of the semiconductor device. also, perfo rm a full technical verification on the assembly quality, becau se the same damage possibly can happen due to conductive substanc es, such as solder ball, that adhere to the lsi during transportation. 5. take notice in the use of this product that it might break or occasionally smoke when an abnormal state occurs such as output pin- v cc short (power supply fault), output pin-gnd short (ground fault) , output-to-output-pin short (load short), or leakage between pins. especially, for the pins below, take not ice of power supply fault, ground fault, load short, and short to the current detectio n pins. (1) aout1(pin 17), aout2(pin 15), bout1(pin 14), bout2(pin 12) (2) bc2(pin 20), vpump(pin 21) (3) vm1(pin 8), vm2(pin 22), vcc(pin 25), s5vout(pin 27) (4) rcsa(pin 16), rcsb(pin 13) and, safety measures such as an installation of fuses are recommended because the extent of the above-mentioned damage and smoke emission will depend on the current capability of the power supply. 6. when designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage a nd operating environment etc.). esp ecially, please be careful not to exceed the range of absolu te maximum rating on the transient state, such as power-on, power-off and mode -switching. otherwise, we will not be liable for any defect which may arise later in your equipment. even when the products are used within the guaranteed values, ta ke into the consideration of incidence of break down and failur e mode, possible to occur to semiconductor produc ts. measures on the system s such as redundant design, arresting the spread of fi re or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the produ cts. 7. when using the lsi for new models, verify the safe ty including the long-term reliability for each product. 8. when the application system is designed by using this lsi, be sure to confirm notes in this book. be sure to read the notes to descriptions and the usage notes in the book. 9. connect the metallic plate (fin) on the back side of the ic with the gnd potential. the thermal resistan ce and the electrical characteristics are guaranteed only when the metallic plate (fin) is connected with the gnd potential. ? usage notes
AN44069A 23 sdl00015aeb ? usage notes (continued) y notes of power lsi 1. design the heat radiation with sufficient margin so that the allowable value might not be exc eeded base on the conditions of power supply voltage, load, and ambient temperature. (it is recommended to design the junctions of the ic with 70% to 80% of absolute maximum rating or less.) 2. the protection circuit is for maintaining safety against abnormal operation. theref ore, the protection circuit should not wor k during normal operation. especially for the thermal protection circuit, if the area of safe operation or the absolute maximum rating is momentarily exceeded due to output pin to vm/vcc shor t (power supply fault), or output pin to gnd short (ground fault), the lsi might be damaged before the thermal protection circuit could operate. 3. unless specified in the product specifications, make sure that negative voltage or excessive vo ltage are not applied to the p ins because the device might be damaged, which could happen due to negative voltage or excessive voltage generated during the on and off timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven. 4. the product which has specified aso (area of safe operation) shoul d be operated in aso. 5. verify the risks which might be caused by the malfunctions of external components. 6. set the capacitance betw een vpump and gnd so that vpump(pin 21) must not be exceeded 43 v even transiently from motor standby to motor start. 7. this ic employs pwm drive method that sw itches the output transistor by high-current. therefore it is apt to generate noises which might cause the ic to malfunction or have fatal damage. to prevent these probl ems, supply voltage mu st be stable enough. take into consideration that the capacitor betw een vcc and gnd is set to minimum 0.1 f and that between vm and gnd is set to minimum 47 f. moreover, set the capacitors to the ic as closely as po ssible to avoid malfunctions a nd damages caused by noises. 8. pulse blanking time in order to prevent mistakes in current de tection caused by noises, th is ic is provided with pulse blanking time of 0.75 s (typ. value). in the result, the motor current will not be less than the current determined by pulse blanking time. therefore, pay attention to controlling minute current. the figure 1 shows the relation between the pulse blanking time and minimum current. increase and decrease in motor current is determined by l va lue, winding resistance, induced voltage, and pwm on duty in the motor. t b 1/f pwm at normal operation in case of setting current less than minimum set current set current minimum current f pwm : pwm frequency t b : pulse blanking time (refer to electrical characteristics no.24 to 26) figure 1. rcs current waveform
AN44069A 24 sdl00015aeb ? usage notes (continued) y notes of power lsi (continued) 9. vref voltage in case of setting vref voltage to low le vel, noises might cause malfunctions due to that comp threshold (spec no. 27/28/29 in page 10)gets low. under the condition of set vref voltage, use the ic after checking that malfunctions do not occur. 10. note of interface for pin 1 to7, pin 9, pin 23, 24, and 28, absolute maximum ratings are ?0.3 to 6 v. when current is set to high level for a mo tor and lead line of gnd is long, the elec tric potential of gnd of the lsi will be raised. therefore, take notice that interfa ce pin might get negative to the potent ial of reference of gnd of the lsi though applying 0 v to interface pin. even in this case, pay attention to not exceeding allowable voltage range. 11. pwmsw(pin 28), pha1(pin 1), phb1(pin 2) the current flowing into pemsw, pha1, and phb1 changes fro m that determined by pull-dow n resistance owing to that parasitic elements in the lsi make the current flow when a pplying voltage of about 0.7 v or more to pwmsw, pha1,and phb1 under the condition of shutdown of vcc. the cu rrent flowing into pha1/phb1/pwmsw is set to 341.4 a (input impedance : about 9.1 k ) at 3.3 v. there is no problem that the voltage up to rating is applied to above-mentioned pins. nonetheless, it is recommended that the voltage of 0.7 v or less is applied to above-mentioned pins at shutdown of vcc. in addition, in case of the volta ge of the above-mentioned pins > vcc(pin 25) ? 0.2 v at power-on of vcc, the parasitic elements in the lsi also make the current flow and the current flowing into the above-mentioned pins will change (refer to figure 2). there is no problem that the voltage up to rating is applied to above-mentioned pins. nonetheless, it is recommended to set the voltage applied to the above -mentioned pins to 4.3 v or less. 0 100 200 300 400 0123456 pha1 / phb1/pwmsw ?R[v] pha1/phb1/pwmsw [ua] pha1/phb1/pwmsw = 4.3 v vcc = 5.0 v vcc = 4.5 v figure 2. input impedance of pha1/phb1/pwmsw at power-on of vcc vcc = 5.5 v z = s 4.7 k z = 100 k pha1/phb1/pwmsw current pha1/phb1/pwmsw voltage [v] [ a] z = about 4.7 k
AN44069A 25 sdl00015aeb ? usage notes (continued) y notes of power lsi (continued) 12. in case of measuring the chip temperature of the ic, measure t he voltage of tjmon(pin 10) a nd presume the chip temperature from the following data. use the following da ta as reference data. before applying the ic to a product, conduct a sufficient reliability test of the ic along with the eval uation of the product with the ic incorporated 13. power supply sequence if two type of power supply are used; rise : it is recommended to comply with the sequence of [vcc power supply rise] [vm power supply rise] fall : although there is no particular specific ation, confirm that vm falls for about 1 s. if it is difficult to perform the recommended sequence above, de sign based on the below sequence. for slew rate of rise, design with [vm : 0.1 v/ s or less, vcc : 0.1 v/ s or less]. if one type of power supply is used; slew rate of rise : design with [vm : 0.1 v/ s or less] temp[ c] vbe[v] vbe / temp = ?1.82 [mv / c] 150 0 temperature characteristic of tjmon supply voltage vm vcc delay : 100 ms or less 1 s time
AN44069A 26 sdl00015aeb ? usage notes (continued) y notes of power lsi (continued) 14. notes of rcs line take the figure and points below into consideration and design pcb pattern. (1) point 1 make the wiring to current detection pi ns (rcsa/rcsb) thick and short ,and design so as to lower impedance. or else current might not be detected properly due to wiring impedance and the current might not be applied to a motor sufficiently. (2) point 2 make the wiring from current de tection resistor shown at poin t 2 in the figure below to conn ector gnd thick and short, and design so as to lower impedance. as point 1, sufficient current might not be applied due to wiring impedance. set the wirings on the side of gnd of rcsa and rcsb independently because pe ak detection might not be detected properly if there is a comm on impedance on the side of gnd of rcsa and rcsb. (3) point 3 connect gnd of the ic to a connector on th e pbc independently. set th e wiring where current det ection resistor with high current line is removed (point 2) apart from the gnd wiring of the ic and make them shorte d at a point as shown in the below figure. that can minimize the flactuation of gnd of the ic. 15. a high current flows into the ic. therefore, the common impeda nce of the pcb pattern cannot be ignored. take the following points into consideration and design the pcb pattern of the motor. a high current flows into the line between the vm1(pin 8) a nd vm2(pin 22). therefore, noise is generated with ease when switching at the inductance (l) of the line, which may result in the malfunctioning or destruction of the ic (figure 3). as shown in figure 4, the escape way of the noise is secured by connecting the capacitor to the connector from vm pin of the ic. this makes it possible to suppress the direct vm pin voltage of the ic. make th e settings based on figure 4 as much as possible. motor connector gnd gnd rcsa/rcsb ic current limit detection resistor point 1 point 2 point 3 (a) figure 3. non-recommended pattern figure 4. recommended pattern vm gnd l c ic rcs vm gnd low spike amplitude due to the capacitor between vm pin and gnd vm gnd l c ic rcs vm gnd
request for your special attention and precautions in using the technical information and semiconductors described in this book (1) if any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially, those with regard to security export control, must be observed. (2) the technical information described in this book is intended only to show the main characteristics and application circuit examples of the products. no license is granted in and to any intellectual property right or other right owned by panasonic corporation or any other company. therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any other company which may arise as a result of the use of technical information described in this book. (3) the products described in this book are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). consult our sales staff in advance for information on the following applications: ? special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod- ucts may directly jeopardize life or harm the human body. ? any applications other than the standard applications intended. (4) the products and product specifications described in this book are subject to change without notice for modification and/or im- provement. at the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date product standards in advance to make sure that the latest specifications satisfy your requirements. (5) when designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions (operating power supply voltage and operating environment etc.). especially, please be careful not to exceed the range of absolute maximum rating on the transient state, such as power-on, power-off and mode-switching. otherwise, we will not be liable for any defect which may arise later in your equipment. even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (6) comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (esd, eos, thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. when using products for which damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages. (7) this book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company. 20080805

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