Dual 6A DC Motor Driver

Dual 6A DC Motor Driver

This breakout board uses Infinion’s IFX9201SG H-bridge motor driver ICs, and can independently control two bidirectional DC motors. A recommended motor voltage of 4.5 – 30 V and peak current output of 8A per channel (6A continuous) make this a great motor driver for dc motors.

The IFX9201SG MOSFET-based H-bridges are much more efficient than the BJT-based H-bridges used in older drivers such as the L298N and Sanyo’s LB1836M, which allows more current to be delivered to the motors and less to be drawn from the logic supply.

For load currents above the current limitation threshold (8A typ.) the H-Bridge goes into chopper current limitation mode. It is also protected against short circuits and overtemperature

The IFX9201SG IC's can be used with logic inputs of 3.3V and 5.0V (TTL/CMOS-compatible).

There is an input pin (DIS) which will disable all motor outputs. This pin is pulled low by a resistor and must be driven high to disable the motors. In addition there is an error output pin (ERR) which indicates an error condition in the mosfets. This pin goes high when an error is detected and can be connected directly to the DIS pin to shutdown the motors or fed back to the controlling microcontroller.

LEDs on the board indicate logic supply voltage and PWM ratios. Blue led is for logic input voltage. Two green LEDs indicate the PWM ratio for each motor.

The motor power input and the two motor output connections are suitable for use with 3.5mm Screw Terminals (not supplied).

Specifications

• Recommended motor voltage (VMOT): 4.5 – 30 V
• Logic voltage (VCC): 2.7 – 5.5 V
• Output current maximum: 8A per channel
• Output current continuous: 6A per channel
• Chopper current limitation
• Short circuit shut down with latch behavior
• Overtemperature shut down with latch behavior
• Maximum PWM frequency: 20 kHz
• Reverse Voltage protection on the Motor supply input
• 4x 3mm mounting holes

Documents

IFX9201SG Datasheet