The MCF8315 is a 4.5V to 35V, 4A peak integrated three-phase gate driver IC with code-free sensorless field-oriented control (FOC) for motor drive applications. The MCF8315 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 allows for configuration of the various device settings and reading fault diagnostic information through an external controller.

The internal sensorless FOC algorithm is highly configurable through register settings in a non-volatile EEPROM ranging from motor start-up behavior to closed loop operation, which allows for the device to operate stand-alone once the device has been configured. The device can receive a speed command through a PWM input, analog voltage, variable frequency square wave, or I2C command. There are a large number of protection features integrated into the MCF8315, intended to protect the device, motor, and system against fault events.