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A4964KJPTR-T

A4964KJPTR-T

Allegro MicroSystems
Motor / Motion / Ignition Controllers & Drivers AUTOMOTIVE SENSORLESS SINUSODIAL BLDC GATE DRIVER
6,953 in stock
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Overview

The A4964KJPTR-T is an automotive-grade, sensorless sinusoidal gate driver designed to control three-phase brushless DC (BLDC) motors. It integrates a professional-grade motor controller that operates without the need for Hall-effect sensors by using back-EMF sensing and an internal SPI-programmable state machine.

Why Choose This Part

This IC eliminates the cost and failure points of external sensors while providing AEC-Q100 qualification for automotive reliability. Its sinusoidal drive significantly reduces vibration and electromagnetic interference (EMI) compared to trapezoidal drivers, and the integrated SPI interface allows for extensive diagnostics and fine-tuning of motor parameters.

Applications

Automotive Cooling Fans
Efficiently drives radiator and condenser fans with reduced acoustic noise due to sinusoidal current control.
Electric Pumps
Ideal for engine cooling pumps and oil pumps requiring high reliability and sensorless operation in harsh environments.
HVAC Blowers
Provides smooth, quiet speed control for cabin climate control systems.

Getting Started

Engineers should utilize the Allegro A4964 evaluation board to interface with the chip via SPI for initial parameter configuration. Development requires a microcontroller with an SPI peripheral to program the internal registers for motor startup, phase advance, and current limits.