Description

Pololu MPQ6612A Single Brushed DC Motor Driver Carrier is a compact module designed to control a single brushed DC motor. The board uses the MPQ6612A driver from Monolithic Power Systems, which operates as a full H-bridge, enabling both direction control and speed regulation of the motor. The driver operates with a supply voltage range of 4-40 V and can deliver up to 4 A of continuous current. The integrated current sensing circuit provides an analog feedback signal on the VISEN output, allowing monitoring of the motor load. The board’s default configuration sets the current limit to approximately 7.5 A, which helps reduce startup current and protect both the motor and the control electronics.

                                                Pinout layout                                    Microcontroller connection diagram for the DC motor driver

Motor control is performed using the logic inputs IN1 and IN2, which can be driven directly from a microcontroller. Speed control is implemented using a PWM signal with frequencies up to 200 kHz. The module also features a SLEEP input that allows the driver to enter a low-power standby mode. The driver includes protection against overcurrent, overvoltage, overheating, and undervoltage conditions, while the carrier board also provides reverse-voltage protection. Integrated LED indicators show the output state and motor direction, simplifying diagnostics during system development.

This version of the module includes factory-soldered connectors, consisting of a male pin header for control signals and a screw terminal block for motor and power connections, enabling quick installation without soldering.

Features

• Single brushed DC motor driver
• Driver IC MPQ6612A
• H-bridge for bidirectional motor control
• Motor supply voltage range 4-40 V
• Maximum continuous current 4 A
• Default current limit approximately 7.5 A
• Support for PWM control up to 200 kHz
• Control inputs IN1 and IN2
• SLEEP input for low-power mode
• VISEN output for analog motor current sensing
• Current sense sensitivity 200 mV/A
• FAULT output for driver error indication
• Protection against overcurrent, overvoltage, and overheating
• Reverse-voltage protection on the carrier board
• LED indicators showing motor direction and output activity
• Logic voltage range 1.5-5.5 V
• Dimensions 20.3 × 22.9 mm
• Weight 4.5 g
• Factory-soldered male headers and screw terminal block

Kit includes

• 1 × Pololu 5286 MPQ6612A Single Brushed DC Motor Driver Carrier with soldered connectors