A89301-Based Sensorless Brushless Motor Controllers

This discrete MOSFET brushless motor controller is based on Allegro’s A89301 BLDC driver and enables sensorless control of one brushless DC motor. It supports a wide 5.5 V to 48 V operating voltage range and can continuously deliver up to 11 A motor current without a heat sink or forced air. The A89301 supports four control interfaces: analog voltage, PWM duty cycle, pulse frequency, and I²C. The I²C interface also allows configuration of various settings on the A89301, and we provide a configuration utility for Windows that simplifies setup with one of our USB-to-I²C adapters. This version ships without terminal blocks or 0.1″ headers.

This discrete MOSFET brushless motor controller is based on Allegro’s A89301 BLDC driver and enables sensorless control of one brushless DC motor. It supports a wide 5.5 V to 48 V operating voltage range and can continuously deliver up to 11 A motor current without a heat sink or forced air. The A89301 supports four control interfaces: analog voltage, PWM duty cycle, pulse frequency, and I²C. The I²C interface also allows configuration of various settings on the A89301, and we provide a configuration utility for Windows that simplifies setup with one of our USB-to-I²C adapters. This version ships with soldered header pins and terminal blocks.