EV6507GF-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.

EV6507GF-00A Rev.1.0

www.MonolithicPower.com

6

9/13/2012

MPS Proprietary Information. Patent Protected. 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, 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:

LIMIT A

LIMIT B

185mV

185mV

II

R6 // R7

R8 // R9

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