Caution Hot Surface! Contact may cause burns. Do not touch. Please take the proper
precautions when operating.
2 Introduction
The MCT8317 is a 4.5-V to 20-V, 5-A peak integrated three-phase gate driver IC with sensorless trapezoidal
for motor drive applications. It provides three accurately trimmed and temperature compensated half-bridge
MOSFETS, gate drivers, charge pump, current sense amplifier, linear regulator for the external load and
adjustable buck regulator. The I2C interface variant (MCT8317) also provides a standard I2C interface for
configuring the various device settings and reading fault diagnostic information through an external controller.
The MCT8317EVM includes an onboard FTDI chip to convert USB communication from the micro-USB
connector into UART and an onboard MSP430FR2355 MCU to interface with the MCT8317. It can also provide
SPI communication for the SPI variant of the MCT8317 device. There are many user-selectable jumpers,
resistors, connectors, and test points to evaluate many features of the device and configure device-specific
settings.
This document serves as a startup guide to supplement the MCT8317EVM. It is intended for engineers to
design, implement, and validate reference hardware for the MCT8317 device.
Figure 2-1. MCT8317EVM Printed Circuit Board (PCB - Top View)
3 Quick Start Guide
The MCT8317EVM requires a power supply source, which has a recommended operating range from a 4.5-V to
20-V. To setup and power the EVM, follow the sequence below:
1. Connect motor phases to A, B, C on connector J8.
2. Do not turn on the power supply yet. Connect motor supply to VBAT/VM and PGND on connector J7.
a. To enable reverse polarity protection and Pi filter, connect to VBAT. Note that when connecting to VBAT,
VM will be VM – 0.7 V less, due to a diode drop in the reverse-polarity protection circuit.
b. To disable reverse-polarity protection and the Pi filter, connect to VM.
Introduction
2
MCT8317EVM Evaluation Module
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