Texas Instruments DRV8421 Series User Manual

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EVM User's Guide: DRV8421AEVM, DRV8421BEVM
DRV8421x Evaluation Module
Description
The DRV8421xEVM allows for easy evaluating of the
DRV8421 dual H-bridge motor driver. The evaluation
module (EVM) can support the DGQ and DFU
packages of the DRV8421A and DRV8421B device
variants. However, only one variant and package can
be populated at a time since the input control signals
(MCU Ctrl 1 and MCU Ctrl 2) are shared among the
devices.
The DRV8421xEVM can drive one or two brushed-DC
motors, or a single bipolar stepper motor. The two
onboard potentiometers provide a convenient way to
manually adjust speed and direction on the fly, an
excellent choice for prototyping and evaluating new
designs.
Get Started
1. Order the EVM: DRV8421BEVM
2. Download the data sheet:
SLOU571 – JUNE 2024
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DRV8421xEVM
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Features
• DRV8421 is a dual H-bridge motor driver
• Two device versions:
– DRV8421A (4-wire input): independent half-
bridge control
– DRV8421B (2-Wire Input): sleep mode, fault
detection
• PWM control interface
• Onboard 3.3V LDO for digital voltage supply
• Main signal header with removable shunts to
disconnect main signals going to the motor driver
IC from the MCU
Applications
• Household appliances
– Printers and Scanners
– Refrigerators
– Vacuum cleaners
– Clothes dryer
• General brushed and stepper motors
Description
DRV8421x Evaluation Module 1