ev6507gf-00a 500ma,15v, bipolar stepper motor driver evaluation board ev6507gf-00a rev.1.01 www.monolithicpower.com 1 9/13/2012 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2012 mps. all rights reserved. the future of analog ic technology description the ev6507gf-00a is an evaluation board for the MP6507GF, 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 15v, and can deliver output current up to 700ma 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 ev6507gf-00a is a fully assembled and tested pcb. the input control signals for the MP6507GF 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 parameter symbol value units input voltage v in 2.7 ? 15 v output current i out 500 ma features ? wide 2.7v to 15v input voltage range ? over-temperature indication ? alternative input control singals (external or generated on board) applications ? pos printers ? video security camera ? battery powered devices ? usb powered devices all 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. ev6507gf-00a evaluation board (l x w x h) 2?? x 2?? x 0.4?? (5cm x 5cm x 1cm) board number mps ic number ev6507gf-00a MP6507GF
ev6507gf-00a ? evb description ev6507gf-00a rev.1.01 www.monolithicpower.com 2 9/13/2012 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2012 mps. all rights reserved. evaluation board schematic
ev6507gf-00a ? evb description ev6507gf-00a rev.1.01 www.monolithicpower.com 3 9/13/2012 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2012 mps. all rights reserved. ev6507gf-00a bill of materials qty ref value description package manufacturer part number 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 4 r1,r2 r3,r4 0 ? film resistor, 5% 0603 royalohm 0603j0000t5e 1 r5 499 ? film resistor, 1% 0603 yageo rc0603fr-07499rl 2 r6,r9 400m ? film resistor, 1% 1206 yageo rl1206fr-070r4l 2 r7,r8 ns not stuffed 1 r10 20k ? film resistor, 1% 0603 yageo rc0603fr-0720kl 1 r11 80.6k ? film resistor, 1% 0603 yageo rc0603fr-0780k6l 1 zd1 zener diode, 5.1v, 5ma, 500mw sod-123 diodes bzt52c5v1 1 led1 led. red 0805 bright led bl-huf35a-trb 5 sw1-sw5 switch (2 bit) ss-12d01eg4 1 cn1 8pin, 2.54mm 4 cn2-cn5 3pin, 2.54mm (with short jumper) 1 cn6 4pin, 2.54mm 1 u1 stepper motor driver tssop16- ep mps MP6507GF
ev6507gf-00a ? evb description ev6507gf-00a rev.1.01 www.monolithicpower.com 4 9/13/2012 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2012 mps. all rights reserved. evb test results performance waveforms are tested on the evaluation board. i out =500ma, f_step=100hz, stepper motor: l=2mh, r=10 ? , t a =25oc, unless otherwise noted. ain1 2v/div. aout1 10v/div. aout2 10v/div. iouta 500ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. iouta 500ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. iouta 500ma/div. ain1 2v/div. aout1 10v/div. aout2 10v/div. iouta 500ma/div. sleep 5v/div. aout1 5v/div. aout2 5v/div. iouta 500ma/div. sleep 5v/div. aout1 5v/div. aout2 5v/div. iouta 500ma/div. sleep 5v/div. aout1 5v/div. aout2 5v/div. iouta 500ma/div. sleep 5v/div. aout1 5v/div. aout2 5v/div. iouta 500ma/div. steady state-full step v in =15v steady state-half step v in =15v power ramp up-full step v in =15v power ramp up-half step v in =15v sleep entry-full step v in =9v sleep recovery-full step v in =9v sleep entry-half step v in =9v sleep recovery-half step v in =9v
ev6507gf-00a ? evb description ev6507gf-00a rev.1.01 www.monolithicpower.com 5 9/13/2012 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2012 mps. all rights reserved. printed circuit board layout figure 1?top silk layer figure 2?top layer figure 3?bottom layer
ev6507gf-00a ? 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. ev6507gf-00a rev.1.0 www.monolithicpower.com 6 9/13/2012 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2012 mps. all rights reserved. quick start guide 1. the power and control signals for the MP6507GF 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 15v 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, aou t2, 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 and cn5 are used to select the source of the control signals ain1, ain2, bin2 and bin1 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 position 2-3, then the source of the control signals are routed to the switches sw1, sw2, sw3 and sw4. 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 mp6507 datasheet. 6. the diode led1 indicates the status of the fault pin. when over-temperature protection happens, fault pin is pulled down to a low level and this led lights up. 7. r6, r7, and r8, r9 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 mp6507 to be 500ma per channel. to change this value of output current, the resistor value must be changed according to the following formula: limit a limit b 185mv 185mv ii r6 // r7 r8 // r9 ?? ??
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