EV6507GQ-00A 500mA,15V, Bipolar Stepper Motor Driver Evaluation Board The Future of Analog IC Technology DESCRIPTION FEATURES The EV6507GQ-00A is an evaluation board for the MP6507GQ, a bipolar stepper motor driver with dual, built-in full-bridges consisting of Nchannel 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. APPLICATIONS The EV6507GQ-00A is a fully assembled and tested PCB. The input control signals for the MP6507GQ 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. Wide 2.7V to 15V Input Voltage Range Over-Temperature Indication Alternative Input Control Singals (External or Generated on Board) 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. ELECTRICAL SPECIFICATION Parameter Input Voltage Output Current Symbol Value Units VIN IOUT 2.7 – 15 500 V mA EV6507GQ-00A EVALUATION BOARD (L x W x H) 2’’ x 2’’ x 0.4’’ (5cm x 5cm x 1cm) Board Number MPS IC Number EV6507GQ-00A MP6507GQ EV6507GQ-00A Rev.1.01 www.MonolithicPower.com 8/31/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 1 EV6507GQ-00A – EVB DESCRIPTION EVALUATION BOARD SCHEMATIC EV6507GQ-00A Rev.1.01 www.MonolithicPower.com 8/31/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 2 EV6507GQ-00A – EVB DESCRIPTION EV6507GQ-00A BILL OF MATERIALS Qty Ref Value 1 C1 2.2μF 2 C2,C5 0.1μF 1 C3 100µF 1 C4 10µF 1 2 2 1 1 R1,R2 R3,R4 R5 R6,R9 R7,R8 R10 R11 1 ZD1 1 5 1 LED1 SW1-SW5 CN1 4 CN2-CN5 1 1 CN6 U1 4 0Ω 499Ω 400mΩ NS 20kΩ 80.6kΩ Description Ceramic Capacitor, 10V, X7R Ceramic Capacitor, 25V, X7R Electrolytic Capacitor, 50V, X5R Ceramic Capacitor. 50V, X7R Package Manufacturer Part Number 0603 Murata GRM188R71A225KE15D 0603 Murata GRM188R71E104KA01D DIP Jianghai CD287-50V100 1206 Murata GRM32ER71H106KA12L Film Resistor, 5% 0603 Royalohm Film Resistor, 1% Film Resistor, 1% Not Stuffed Film Resistor, 1% Film Resistor, 1% Zener Diode, 5.1V, 5mA, 500mW LED. Red Switch (2 Bit) 8PIN, 2.54mm 3PIN, 2.54mm (with Short Jumper) 4PIN, 2.54mm Stepper Motor Driver 0603 1206 Yageo Yageo RC0603FR-07499RL RL1206FR-070R4L 0603 0603 Yageo Yageo RC0603FR-0720KL RC0603FR-0780K6L SOD-123 Diodes BZT52C5V1 0805 Bright LED QFN16 MPS 0603J0000T5E BL-HUF35A-TRB SS-12D01EG4 MP6507GQ EV6507GQ-00A Rev.1.01 www.MonolithicPower.com 8/31/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 3 EV6507GQ-00A – EVB DESCRIPTION EVB TEST RESULTS Performance waveforms are tested on the evaluation board. IOUT=500mA, F_step=100Hz, Stepper Motor: L=2mH, R=10Ω, TA=25ºC, unless otherwise noted. Steady State-Full Step Steady State-Half Step Power Ramp Up-Full Step VIN=15V VIN=15V VIN=15V AIN1 2V/div. AIN1 2V/div. AOUT1 10V/div. AOUT1 10V/div. AOUT2 10V/div. AOUT2 10V/div. IOUTA 500mA/div. IOUTA 500mA/div. AIN1 2V/div. AOUT1 10V/div. AOUT2 10V/div. IOUTA 500mA/div. Power Ramp Up-Half Step Sleep Entry-Full Step Sleep Recovery-Full Step VIN=15V VIN=9V VIN=9V SLEEP 5V/div. SLEEP 5V/div. AOUT1 5V/div. AOUT1 5V/div. AOUT2 10V/div. AOUT2 5V/div. AOUT2 5V/div. IOUTA 500mA/div. IOUTA 500mA/div. IOUTA 500mA/div. AIN1 2V/div. AOUT1 10V/div. Sleep Entry-Half Step Sleep Recovery-Half Step VIN=9V VIN=9V SLEEP 5V/div. SLEEP 5V/div. AOUT1 5V/div. AOUT1 5V/div. AOUT2 5V/div. AOUT2 5V/div. IOUTA 500mA/div. IOUTA 500mA/div. EV6507GQ-00A Rev.1.01 www.MonolithicPower.com 8/31/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 4 EV6507GQ-00A – EVB DESCRIPTION PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer Figure 2—Top Layer Figure 3—Bottom Layer EV6507GQ-00A Rev.1.01 www.MonolithicPower.com 8/31/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 5 EV6507GQ-00A – EVB DESCRIPTION QUICK START GUIDE 1. The power and control signals for the MP6507GQ 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, 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 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: ILIMIT A 185mV R6 // R7 ILIMIT B 185mV R8 // R9 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. EV6507GQ-00A Rev.1.01 www.MonolithicPower.com 8/31/2012 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 6