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.

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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

=

Ι

=

Ι

Β

−

Α

−