40-V max, 8-A peak, sensorless trapezoidal control 3-phase BLDC motor driver

The MCT8316A

provides a single-chip, code-free sensorless trapezoidal solution for customers requiring

high speed operation (up to 3kHz electrical) or very fast startup time (<50ms) for 12- to

24-V brushless-DC motors up to 8-A peak current. The MCT8316A integrates three 1/2-H bridges

with 40-V absolute maximum capability and a very low RDS(ON) of 95 mΩ (high-side

+ low-side). Power management features of an adjustable buck regulator and LDO generate the

3.3-V or 5.0-V voltage rails for the device and can be used to power external circuits.

Sensorless

trapezoidal control is highly configurable through register settings (MCT8316AV) or hardware

pins (MCT8316AT) ranging from motor start-up behavior to closed loop operation. Register

settings for MCT8316AV can be set in non-volatile EEPROM, which allows the device to operate

stand-alone once it has been configured. The device receives 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 MCT8316A, intended to protect the

device, motor, and system against fault events.

Documentation for reference:

* Refer E2E FAQ for clarification.

* Refer

MCT8316A

tuning guide

* Refer to

the MCT8316A EVM GUI