ev6501agf-00b 2.5a, 35v bipolar stepper motor driver evaluation kit ev6501a rev.1.0 www.monolithicpower.com 1 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description the MP6501AGF demo board is a customized evaluation board for a stepper motor driver with a built-in micro-stepping translator. the MP6501AGF demo board operates from a supply voltage of up to 35v and delivers motor current up to 2.5a. it operates a bipolar stepper motor in full-, half-, quarter-, eighth-, and sixteenth- step modes by setting the ms3, ms2, and ms1. the input control signals and reference voltage are applied through the connector or generated on the board. electrical specifications parameter symbol value units input voltage v in 8-35 v output current i out 2.5 a features ? wide 8v to 35v input voltage range ? up to 2.5a programmable output current ? full-, half-, quarter-, eighth- and sixteenth- step modes ? adjustable mixed decay ratio or automatic decay ? ocp, ovp, and otp ? control signals generated by on-board usb microcontroller or supplied externally applications ? printers ? general bipolar stepper drivers all mps parts are lead-free, halogen-free, and adhere to the rohs directive. for mps green status, please visit the mps website under quality assurance. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. ev6501agf-00b evaluation board (l x w x h) 4?? x 3.4?? x 1?? (10cm x 8.5cm x 2.5cm) board number mps ic number ev6501a-f-00b MP6501AGF
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 2 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evaluation board schematic oe1 1 a1 2 a2 3 a3 4 a4 5 a5 6 a6 7 a7 8 a8 9 gnd 10 y8 11 y7 12 y6 13 y5 14 y4 15 y3 16 y2 17 y1 18 oe2 19 vcc 20 u5 74lvc54 1p w 100 k r14 gnd 100 nf c16 gnd pd 0 pd 1 pd 2 pd 3 pd 4 pd 5 pd 6 pd 7 nsl eep nr set nen bl ms 3 ms 2 ms 1 dir mcu _st ep nen ctl jp 3 gnd 3p3 gnd scl sda pd 0 pd 1 pd 2 pd 3 pd 4 pd 5 pd 6 pd 7 vbus gnd usb_n usb_p gnd clkou t 5 rdyo/*slr d 8 rdy1/*slw r 9 dplus 15 dminus 16 *ifclk 20 reservrd 21 sda 23 scl 22 xtalout 11 xtalin 12 reset# 49 wakeup 51 pd 7/fd15 3 pd 6/fd14 2 pd 5/fd13 1 pb0/fd 0 25 gnd 4 gnd 7 gnd 19 gnd 33 gnd 35 gnd 48 agnd 13 agnd 17 6 24 18 3 4 39 vcc vcc vcc vcc vcc vcc 5 0 10 avcc avcc 14 c y 7c 6801 3 -5 6 pb1/fd 1 26 pb2/fd 2 27 pb3/fd 3 28 pb4/fd 4 29 pb5/fd 5 30 pb6/fd 5 31 pb7/fd 7 32 pd 0/fd8 52 pd 1/fd9 53 pd 2/fd10 54 pd 3/fd11 55 pd4// fd12 56 pa 0/in t0# 40 pa 1/in t1# 41 pa2/*slo e 42 pa3/*w u 2 43 pa4/f ifoa dr0 44 pa5// f ifoa dr 1 45 pa6/pk tend 46 pa7/*fla gd /slcs# 47 ctl0/*fla ga 36 ctl1/*fla gb 37 ctl2/*fla gc 38 cl k o ut r d y o / * s l rd r d y 1 / * sl wr dp lu s d mi n u s * i f cl k r e s er v r d s d a s c l x t a lo ut x t a l i n r e s et # w a k eu p p d 7 /f d 1 5 p d 6 /f d 1 4 p d 5 /f d 1 3 p b 0 / f d 0 gnd gnd gnd gnd gnd gnd agnd agnd vcc vcc vcc vcc vcc vcc avcc avcc c y 7 c 6 8 0 1 3 5 6 5 5 p b 1/ f d 1 p b 2 / f d 2 p b 3 / f d 3 p b 4/ b b f d 4 p b 5 / f d 5 p b 6 / f d 5 p b 7 / f d 7 p d 0 /f d 8 p d 1/f d 9 p d 2 /f d 1 0 p d 3 /f d 1 1 p d 4 // f d1 2 p a 0 /i n t0 n n # p a 1/i n t1 n n # p a 2 / * s l o e p a 3 / * w u 2 p a 4 / fif o a o o dr 0 p a 5 // f i f f f o f f a d r 1 p a 6 / p k ten d p a 7 / * f l a g d / s l c s # ctl 0 / * f l a g a ctl 1 / * f l a g b ctl 2 / * f l a g c u1 cy 7c 6 8 0 13 a gnd gnd 12p f c12 12p f c7 47u f c1 1uf c10 gnd 4.7k r10 a0 1 sda 5 a2 3 a1 2 wp 7 vss 4 scl 6 vcc 8 u4 24lc64 -e /sm 4.7k r9 100 k r4 gnd 1 2 3 4 5 p1 gnd 100 nf c14 gnd ns r8 100 k r11 gnd gnd 100 nf c8 gnd 4.7k r5 4.7k r6 1uf c9 gnd 100 nf c11 100 nf c6 100 nf c13 100 nf c3 gnd 1 2 ts2 1 2 p3 sma j40 1 2 d9 gnd gnd gnd vin 100uf/50 v c21 gnd nf ault nhom e 10157-0 00 1 gnd 5 dm 2 vbus 1 dp 3 id 4 s1 6 g n d d m v bu s d p i d s 1 s2 7 s3 8 s4 9 s5 10 s6 11 s7 12 s8 13 cn1 gnd 1 2 y1 24m hz 100 nf c5 100 nf c2 gnd tp22 gnd vin tp21 1 2 d4 gnd 2k r1 nsl eep nr set nen bl ms 1 ms 2 ms 3 di r step vbu s + + - - moto r pow er usb i2c p rog gnd 2 1 d3 esd9m5 .0 gnd gnd gnd 2 1 d1 esd9 m 5.0 2 1 d2 esd9m 5.0 gnd xo xi scl sda nc pu r 100 k r7 wp wp d6 1n4 148 1uf c15 gnd in 1 out 8 gnd 4 fb 5 in 2 gnd 9 i n o u t g n d f b i n g n d u2 mp 2 013 gq - 33 gnd gnd 3p3 sdi 8 scl 1 nc s /ld 2 vouta 5 voutb 6 ref 3 vcc 7 gnd 4 s d i s c l n c s /l d v o u t a v o u t b r e f v c c g n d u3 ltc2 632 scs sda ta sclk gnd 3p3 3p3 3p3 3p3 3p3 3p3 3p3 3p3 3p3 sdata sclk scs daca dacb
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 3 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. evaluation board schematic (continued) gnd cpa 1 cpb 2 vcp 3 vin 4 aout1 5 sena 6 sena 7 aout2 8 bo ut2 9 senb 10 senb 11 bo ut1 12 vin 13 nsl eep 14 vg 15 nrset 16 nen bl 17 ms3 18 ms2 19 ms1 20 di r 21 step 22 nfault 23 nhome 24 mds 26 vref 27 3p3vout 28 cp a c p b v c p v i n a o u t 1 s en a s en a a o u t 2 b o ut 2 s en b s en b b o ut 1 v i n n s lee p v g n rs e t n e n b l m s 3 m s 2 m s 1 d ir s te p n f a ul t n h o m e m d s v re f 3p3 v o u t g n d 29 rosc 25 u6 m p6501a 1 2 3 4 ts1 aou t1 tp17 aou t2 tp18 bo ut2 tp19 bo ut1 tp20 ns 1 2 d12 r19 100 m r18 100 m gnd gnd gnd gnd gnd 100 nf c22 1uf c23 100 nf c24 100 nf c25 gnd 1 2 3 4 p2 aout1 aout2 senb sena cpa cpb vcp step di r nen bl nr set nsl eep ms1 ms2 ms3 vref mds v3p3ou t ns 1 2 d10 ns 1 2 d11 ns 1 2 d13 vin 470 nf c20 196 k r17 gnd vg ro sc 100 nf c17 100 nf c18 nh om e nfa ult 100 nf c19 step tp8 dir tp9 nen bl tp13 nr set tp14 nsl eep tp15 ms1 tp10 ms2 tp11 ms3 tp12 step di r nen bl nrset nsl eep ms1 ms2 ms3 r13 r12 nh om e tp6 nfa ult tp7 v3p3ou t tp3 vref tp4 md s tp5 nh om e nfa ult v3p3out vref mds gnd tp16 gnd tp1 gnd tp2 gnd 27k r16 gnd r15 500 k gnd 1 2 3 jp 2 gnd bo ut1 bo ut2 1 2 d8 1 2 d7 1 2 d5 gnd 1k r3 1k r2 10k r20 nh om e nfa ult fi x adj rosc vin home fau lt aou t 1 aou t 2 bout1 bout2 aou t 1 aou t 2 bout1 bout2 step motor install 1-2 to use fixed rosc install 2-3 to use adj . r osc these diodes not install ed 7 4 1 10 13 16 8 6 5 3 2 9 11 12 14 15 8 7 5 4 2 1 on on on on on on 3 6 on on sw 1 r 2 2 r23 r 2 4 r25 r26 r27 r28 di r ms1 ms2 ms3 nen bl nr set nsl eep r 2 1 manual _step gnd 3 1 2 sw 3 step mcu _st ep manual _step 3 1 2 sw 4 3 1 2 sw 5 mds_ r-d iv ref _ r-div r29 r30 gnd v3p3ou t md s_r-d iv vcc vcc vcc_ gnd gnd 3 1 2 sw 6 vcc vp u vpu ref _ r-d iv 3p3 dacb daca vcc
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 4 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. ev6501agf-00b bill of materials qty ref value description package manufacturer part number 1 c1 47f ceramic capacitor, 6.3v, x6s 1206 murata grm31cc80j476me18l 15 c2, c3, c5, c6, c8, c11, c13, c14, c16, c17, c18, c19, c22, c24, c25 100nf ceramic capacitor, 50v, x7r 0603 murata grm188r71h104ka93d 2 c7, c12 12pf ceramic capacitor, 50v, c0g 0603 murata grm1885c1h120ja01 4 c9, c10, c15, c23 1f ceramic capacitor, 16v, x7r 0603 murata grm188r71c105ka12d 1 c20 470nf ceramic capacitor, 16v, x7r 0603 murata grm188r71c474ka88d 1 c21 100f electrolytic capacitor, 50v, electrolytic dip rubycon 50yxf100mefc 1 r1 2k ? film resistor, 1% 0603 yageo rc0603fr-072kl 10 r2, r3, r21, r22, r23, r24, r25, r26, r27, r28 1k ? film resistor, 1% 0603 yageo rc0603fr-071kl 4 r4, r7, r11, r14 100k ? film resistor, 1% 0603 yageo rc0603fr-07100kl 8 r5, r6, r9, r10, r12, r13, r29, r30 4.7k ? film resistor, 1% 0603 yageo rc0603fr-074k7l 1 r8 ns 1 r15 500k ? square trimming potentiometer bourns 3266w-1-504lf 1 r16 27k ? film resistor, 1% 0603 yageo rc0603fr-0727kl 1 r17 196k ? film resistor, 1% 0603 yageo rc0603fr-07196kl 2 r18, r19 100m ? sense resistor, 1%, 2w 2512 cyntec rl- 3264-9-r100-fn 1 r20 10k ? film resistor, 1% 0603 yageo rc0603fr-0710kl 3 d1, d2, d3 tvs sod-923 on semi esd9m5.0s 4 d4, d5, d7, d8 led, red 0805 bright led bl-huf35a-trb
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 5 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. ev6501agf-00b bill of materials ( continued ) qty ref value description package manufacturer part number 1 d6 schottky diode, 75v, 0.15a sod-123 diodes 1n4148w 5 d9, d10, d11, d12, d13 ns 1 u1 usb microcontroller t ssop56 cypress cy7c68013a-56pvxc 1 u2 low-power linear regulator qfn8 (3x3mm) mps mp2013gq-33 1 u3 dac 8-lead tsot-23 linear technology ltc2632acts8 1 u4 64k-bit, 400khz, 2.5v, i 2 c serial eeprom so8 microchip 24lc64-e/sn 1 u5 octal buffer and line driver with 3-state outputs tssop20 nxp 74lvc541apw,118 1 u6 stepper motor driver tssop- 28 ep mps MP6501AGF 1 y1 crystal oscillator di p citizen hc49us-24.000mabj-ub 1 cn1 microusb molex 10157-0001 1 jp2 3-bits/2.54mm connector 1 jp3, p3 2-bits/2.54mm connector 1 p1 5-bits/2.54mm connector 1 p2 4-bits/2.54mm connector 1 sw1 8-bits button smd wurth 418121270808 4 sw3, sw4, sw5, sw6 button dip wurth 450301014042 1 ts1 header, 4-pin phoenix contact 1729144 1 ts2 header, 2-pin phoenix contact 1729128 9 vcc, vcc_gnd, vin, vin_gnd, aout1, aout2, bout1, bout2, gnd 1.0 1 v3p3out 1-bit/2.54mm connector 1 other test points 31-bits/2.54mm connector
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 6 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. printed circuit board layout figure 1. top silk layer figure 2. top layer figure 3. bottom layer
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 7 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. quick start guide ? the power and control signals for the ev6501agf-00b are applied through the terminal block ts2 or the header connector p3. ? each pin in the connector is labeled on the evb. ? the supplied voltage should be between 8v and 35v (12v or 24v nominal in most cases). ? the stepper motor is connected to terminal block ts1 or connector p2. each pin is labeled. controlling the mp6501a using the on-board usb microcontroller and pcb gui program: 1. place a jumper on jp3, nenctrl. 2. set all of the switches on the dip switch sw1 to ?off.? 3. to use the dip switch or to drive signals externally to the test points, remove the jumper from jp3. 4. to use a fixed off time, set by r17 (196k), place a jumper across the pins labeled ?fix? on header jp2. 5. to use the trim pot to adjust the off time, place the jumper on the pins labeled ?adj.? ? sw3 selects either an internally generated step signal or an externally generated step signal. ? sw4 selects either a fixed voltage for the vref input or the on-board dac, which is set by the gui. ? sw5 selects either a fixed voltage for the mds input or the on-board dac, which is set by the gui. ? sw6 selects between a 3.3v voltage for the pull-up resistors or an externally supplied voltage. . the led d5 indicates the status of fault. when over-temperature protection or over-current protection occurs, nfault is pulled down to a low level and lights up the led. r18 and r19 are the current-sense resistors connected directly to sena and senb, respectively. the other sides of these resistors are connected to gnd. the resistors, in conjunction with the voltage applied to vref, control the current through the mp6501a.
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 8 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. gui operation a pc based gui program is used to control the ev6501agf-00b from a windows pc. connect the board to a usb port on the computer. when launched, the gui shows selection buttons for three pages as shown below: when the ?monitor? button is clicked, the screen below is displayed: from this screen, a reset pulse can be generated fo r the mp6501a by pressing ?reset.? you can enter or exit sleep mode by pressing ?sleep.? pr essing ?enable? will enable or disable the mp6501a. * note that the mp6501a must be enabled before trying to move the motor using the next screen.
ev6501a ? evb description ev6501a rev.1.0 www.monolithicpower.com 9 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. if a fault condition (over temperature, over current, etc.) is encountered, the ?fault? button will illuminate. when the ?basic input? button is clicked, the screen below is displayed: step mode (from 1/16-step to full-step) and the step direction are selectable. entering a numeric value in the ?peak current? box sets the peak winding current (the value assumes a 100m ? sense resistor, which is normally installed on the evb). decay mode can be selected. select automatic decay mode or enter a numeric value for the fast decay portion of mixed decay (for slow decay ent er ?1,? for fast decay, enter ?100?). the ?speed control? section allows you to set a number of steps for ramp up and ramp down, a number of steps to run at the target step rate, and the frequency (step rate) in hz or pps. the resulting ramp- up, run, and ramp-down times are displayed. once these parameters are set, press the ?program ? button and the motor will move as programmed.
ev6501a ? evb description notice: the information in this document is subject to change wi thout notice. please contact m ps for current specifications. users should warrant and guarantee that third party intellectual property rights ar e not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. ev6501a rev.1.0 www.monolithicpower.com 10 3/9/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. when the ?output demo? button is clicked, the screen below is displayed: this screen shows diagrammatically the winding currents for the selected decay and step modes.
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