ev6509gf-00a 1.2a,18v, bipolar stepper motor driver evaluation board ev6509gf-00a rev.1.0 www.monolithicpower.com 1 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. the future of analog ic technology description the ev6509gf-00a is an evaluation board for the MP6509GF, a bipolar stepper motor driver with dual, built-in full-bridges consisting of n- channel power mosfets. it operates from a supply voltage range of 2.7v to 18v, and can deliver output current up to 1.2a per channel. the safety features include sinking and sourcing current limits implemented with external sensors, under-voltage lockout and thermal shutdown. an over-temperature output flag is available to indicate thermal shutdown. the ev6509gf-00a is a fully assembled and tested pcb. the input control signals for the MP6509GF are applied through the connector or generated on board. it can drive a bipolar stepper motor with both full step and half step mode. it also can drive two independent dc motors. electrical specification paramete r symbol v alue units input voltage v in 2.7 ? 18 v output current i out 1.2 a features ? wide 2.7v to 18v input voltage range ? over-current and over-temperature indication ? alternative input control signals (external or generated on board) ? four selectable current attenuation modes applications ? pos printers ? video security camera ? battery powered devices ? usb powered devices a ll mps parts are lead-free and adhere to the rohs directive. for mps green status, please visit mps website under products, quality assurance page. ?mps? and ?the future of analog ic technology?, are registered trademarks of monolithic power systems, inc. ev6509gf-00a evaluation board (l x w x h) 2.54? x 2.54? x 0.4? (6.35cm x 6.35cm x 1cm) board numbe r mps ic numbe r ev6509gf-00a MP6509GF
ev6509gf-00a ? evb description ev6509gf-00a rev.1.0 www.monolithicpower.com 2 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. evaluation board schematic
ev6509gf-00a ? evb description ev6509gf-00a rev.1.0 www.monolithicpower.com 3 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. ev6509gf-00a bill of materials qty re f v alue description package manufacture r part numbe r 1 c1 2.2 f ceramic capacitor, 10v, x7r 0603 murata grm188r71a225ke15d 2 c2,c5 0.1 f ceramic capacitor, 25v, x7r 0603 murata grm188r71e104ka01d 1 c3 100f electrolytic capacitor, 50v, x5r dip jianghai cd287-50v100 1 c4 10f ceramic capacitor. 50v, x7r 1206 murata grm32er71h106ka12l 6 r1,r2 r3,r4 r14,r15 0 ? film resistor, 5% 0603 royalohm 0603j0000t5e 1 r5 20k ? film resistor, 1% 0603 yageo rc0603fr-0720kl 1 r6 80.6k ? film resistor, 1% 0603 yageo rc0603fr-0780k6l 1 r7 499 ? film resistor, 1% 0603 yageo rc0603fr-07499rl 6 r8,r9, r10,r11, r12,r13 500m ? film resistor, 1% 1206 yageo rl1206fr-070r5l 1 zd1 zener diode, 5.1v, 5ma, 500mw sod-123 diodes bzt52c5v1 1 led1 led. red 0805 bright led bl-huf35a-trb 7 sw1-sw7 switch (2 bit) ss-12d01eg4 1 cn1 10pin, 2.54mm 6 cn2-cn7 3pin, 2.54mm (with short jumper) 1 cn8 4pin, 2.54mm 1 u1 stepper motor driver tssop-20 ep mps MP6509GF
ev6509gf-00a ? evb description ev6509gf-00a rev.1.0 www.monolithicpower.com 4 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. evb test results performance waveforms are tested on the evaluation board. v in =12v, i out =1.2a, att1=att2=l, f_step=200hz, r+l load: l=1.5mh, r=3.3 ? , t a =25oc, unless otherwise noted. sleep 5v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. sleep 5v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. sleep 5v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. sleep 5v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. ain1 10v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. ain1 10v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. steady state-full step steady state-half step power ramp up-full step power ramp up-half step sleep entry-full step sleep recovery-full step sleep entry-half step sleep recovery-half step ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. 80% current attenuation -full step att1=h, att2=l
ev6509gf-00a ? evb description ev6509gf-00a rev.1.0 www.monolithicpower.com 5 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. evb test results (continued) performance waveforms are tested on the evaluation board. v in =12v, i out =1.2a, att1=att2=l, f_step=200hz, r+l load: l=1.5mh, r=3.3 ? , t a =25oc, unless otherwise noted. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 200ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 200ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 500ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 500ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. i outa 1a/div. 80% current attenuation -half step att1=h, att2=l 50% current attenuation -full step att1=l, att2=h 50% current attenuation -half step att1=l, att2=h 20% current attenuation -full step att1=h, att2=h 20% current attenuation -half step att1=h, att2=h
ev6509gf-00a ? evb description ev6509gf-00a rev.1.0 www.monolithicpower.com 6 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. printed circuit board layout figure 1?top silk layer figure 2?top layer figure 3?bottom layer
ev6509gf-00a ? evb description notice: the information in this document is subject to change without notice. please contact mps for current specifications. users should warrant and guarantee that third party intellectual property rights are not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. ev6509gf-00a rev.1.0 www.monolithicpower.com 7 12/15/2014 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2014 mps. all rights reserved. quick start guide 1. the power and control signals for the MP6509GF are applied through the connector cn1. each pin in the connector is labeled on the evb. the control signals of ain1, ain2, bin1 and bin2 can be generated on board too. refer the jumpers section (item5) for detailed information. the connector cn1 also outputs the fault signal and vdd (5v) from the ic. 2. preset power supply of 2.7v to 18v between vin and gnd pins on cn1 or external vin and gnd terminals. 3. the connector cn6 should be connected to the motor winding terminals. each pin in the connector is labeled on the evb as aout1, aout2, bout1 and bout2. the polarity of these connections will affect the direction of the motor in the case of a dc motor. as for a stepper motor, one winding should be connected to aout1 and aout2, while the other should be connected to bout1 and bout2. 4. if the sw5 is switched to the vin position, sleep pin will be pulled up to the vin by a voltage divider resistor. this ensures the part doesn?t enter the sleep mode. if the sleep mode is controlled externally through any controller, then switches the sw5 to vslp position and connects the sleep control signal from the external controller directly to the vslp terminal. 5. jumpers cn2, cn3, cn4, cn5, cn6 and cn7 are used to select the source of the control signals ain1, ain2, bin2, bin1, att1 and att2 respectively. by placing a shunt between positions 1-2, the source of the control signals are routed to the connector cn1. this connection allows the user to control these signals through an external controller. if the shunt is placed between positions 2-3, the source of the control signals are routed to the switches sw1, sw2, sw3, sw4, sw6 and sw7. these switches can be used to control the state of these input control signals. the state of the motor outputs for various input combinations can be inferred from the mp6509 datasheet. 6. the diode led1 indicates the status of the fault pin. when over-current or over-temperature protection happens, fault pin is pulled down to a low level and this led lights up. 7. r8-r10, r11-r13 are the current sense resistors directly connected to sena and senb respectively. the other sides of these resistors are connected to gnd. these resistors control the current through the mp6509 to be 1.2a per channel. to change this value of output current, the resistor value must be changed according to the following formula: 13 // 12 // 11 200 10 // 9 // 8 200 lim lim r r r mv r r r mv = = ? ?
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