DRV8874 - single channel 37V/2.1A motor driver - Pololu 4035

Product description: DRV8874 - single-channel 37 V / 2.1 A motor driver - Pololu 4035

Single-channel DC motor driver from Pololu equipped with the DRV8874 system. It is supplied with the voltage from 4.5 V to 37 V. The continuous current per channel is 2.1 A (temporary up to 6 A for 1 second). It allows you to easily control the speed and direction of rotation of the motor, using only two pins of the microcontroller. The controller is also equipped with protection against reverse polarity, too low voltage, too high current and too high temperature.

Single-channel DC motor driver - DRV8874.

Connection of the DRV8874 motor driver.

Connecting the DRV8874 driver

The motor supply voltage in the range from 4.5 V to 37 V should be connected to the VIN or VM pin. In a typical application, it is enough to connect two control lines: the selection of the PHASE rotation direction and the PWM speed regulation to the ENABLE pin. By default, the controller is in sleep mode - to exit it, the SLEEP pin must be supplied with a voltage in the range from 1.8 V to 5.5 V. DRV8874 offers three possible control modes:

• PHASE / ENABLE (PH / EH)
• PWM (IN / IN)
• Via an independent half-bridge

The pins of the DRV8874 driver Pin Default state Description VIN Input voltage from 4.5 V to 37 V. GND The mass of the system for the engine and logic. VM Pin that gives access to the motor's power supply after activation of the MOSFET protection against reverse voltage. It can be used to power other system components with reverse polarity protection. OUT1 Engine output 1. OUT2 Motor output 2. EN / IN1 LOW Pin 1 for motor turn ON / OFF PHASE / ENABLE (PH / EH). PH / IN2 LOW Pin 2 to control the direction of rotation of the motor PHASE / ENABLE (PH / EH). FAULT FLOATING Open-drain, fault output activated with low state. The pin goes low after exceeding the permissible current or voltage. Must be pulled up with a resistor, to be high by default. SLEEP LOW The SLEEP input causes the controller to enter the low power state after entering the low state. This pin can also be switched to clear a stuck over current or over temperature fault. VREF Current limiting threshold reference voltage.

DRV8874 motor driver specification

• Number of channels: 1
• Supply voltage: 4.5 V to 37 V
• Continuous current per channel: 2.1 A
• Instantaneous current per channel: 6 A.
• Maximum PWM frequency: 100 Hz
• Minimum logic voltage: 1.8V
• Maximum logic voltage: 5.5V
• Reverse polarity protection
• Dimensions: 15.2 x 17.8 mm
• Weight: 0.9 g

Diagram of the DRV8874 driver.

Useful links

• Manufacturer's website: Pololu # 4035
• Tile dimensions
• 3D model of the driver