BLDC pre-driver with integrated commutation logic
The MCP8024-H/MP is a three-phase brushless DC (BLDC) motor pre-driver from Microchip Technology, combining commutation and direction management logic with a half-bridge gate-drive output stage. It accepts a 6 V to 28 V supply and drives external power MOSFETs in a half-bridge configuration (three outputs) for sensorless or sensored BLDC commutation. The PWM interface allows the host controller to set duty cycle and commutation timing directly, while the on-chip control logic handles the six-step sequence and direction reversal. This offloads real-time commutation from the MCU, freeing cycles for higher-level motor control algorithms.
Rated for a 6 V to 28 V supply, the part covers the common 12 V and 24 V industrial bus voltages used in pumps, fans, and conveyor drives. The -40°C low end handles cold-start conditions in outdoor or unheated enclosures, while the 150°C ceiling provides margin above the typical 85°C or 105°C industrial ambient — useful when the pre-driver is mounted near the motor or in a confined panel.
Housed in a 40-VFQFN with exposed pad (5x5 mm body), the MCP8024-H/MP requires a thermal land on the PCB to conduct heat from the die to the board. The exposed pad is the primary thermal path — the datasheet's recommended footprint includes a 3.3x3.3 mm solder pad with via array to the ground plane. Supplied in tube, not tape-and-reel — factor this into the pick-and-place setup if the line is configured for reel-fed parts only.