Texas Instruments DRV8837C, Руководство пользователя, Страница: 2 / 11

Introduction
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2 SLVUAS3 – June 2016
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DRV8837C Evaluation Module User's Guide
1 Introduction
The DRV8837C customer EVM is a platform built around the DRV8837C device which is a single H-bridge
brushed DC-motor driver. This device drives one brushed DC motor with up to 1 A of output current and is
controlled using a PWM (IN/IN) input interface.
The EVM includes an MSP430G2131 microcontroller to supply all required drive signals for dual-direction
motor rotation. This EVM also has an onboard regulator to supply 3.3 V to both the MCU and the logic
supply of the DRV8837C device.
Two headers are included for simple direction and nSLEEP control. An easily adjustable potentiometer is
also populated on the board to allow for simple motor speed adjustment. Because the DRV8837C device
can operate with small VM voltages, the EVM includes a USB-Mini type B connector which can be used
as a 5-V supply for the EVM.
2 Connectors
The DRV8837C EVM allows connections to the VM (motor voltage) power rail through a three-pin header
(JP2). The center pin of this three-pin test clip is floating and intended to help the user differentiate
between the motor and power connection. A test clip labeled VM is available to probe the input power rail.
Figure 1. Connections