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

The

MCT8316Z provides a single-chip code-free sensored trapezoidal solution for

customers driving 12- to 24-V brushless-DC motors. The MCT8316Z integrates three

1/2-H bridges with 40-V absolute maximum capability and a very low RDS(ON) of 95

mOhms (high-side and low-side combined) to enable high power drive capability.

Current is sensed using an integrated current sensing feature which eliminates the

need for external sense resistors. Power management features of an adjustable buck

regulator and LDO generate the necessary voltage rails for the device and can be

used to power external circuits.

MCT8316Z

implements sensored trapezoidal control in a fixed-function state machine, so an

external microcontroller is not required to spin the brushless-DC motor. The device

integrates three analog hall comparators for position sensing to achieve sensored

trapezoidal BLDC motor control. The control scheme is highly configurable through

hardware pins or register settings ranging from motor current limiting behavior to

fault response. The speed can be controlled through a PWM input.

There

are a large number of protection features integrated into the MCT8316Z, intended to

protect the device, motor, and system against fault events.

Refer Section 9.1 for design consideration and recommendation on device usage.