SLVUD80 September   2025

 

  1.   1
  2.   Description
  3.   Features
  4. 1DRV8844AEVM PCB
  5. 2Evaluation Module Overview
    1. 2.1 Introduction
    2. 2.2 Kit Contents
    3. 2.3 Specifications
    4. 2.4 Device Information
  6. 3Evaluation Module Operation
    1. 3.1 Input Control
      1. 3.1.1 Brushed-DC Control
    2. 3.2 LEDs
    3. 3.3 EVM Description
    4. 3.4 Power Connections and Ground Planes
    5. 3.5 Test Points
    6. 3.6 Jumpers
    7. 3.7 Power Outputs
  7. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials
  8. 5Trademarks

3.1 Input Control

The EVM features four onboard potentiometers that send an analog voltage inputs to the MCU that are converted into proportional PWM signals that go to the corresponding inputs on the DRV8844A.

The onboard switches select the direction and decay mode for each channel. The switch configuration and potentiometer used for speed control depends on the load configuration. The DRV8844A is a four-channel independent half-bridge driver, which means all four channels are individually controllable. Please follow Figure 3-1 for details on how to connect and control different load configurations.

DRV8844AEVM Input Potentiometers with Direction and Decay Switches Figure 3-1 Input Potentiometers with Direction and Decay Switches