A4915METTR-T
Overview
The A4915METTR-T is a three-phase brushless DC (BLDC) motor controller pre-driver designed for use with external N-channel power MOSFETs. It operates with a supply voltage of 3V to 5.5V and supports high-voltage motor loads from 5V up to 50V. The device simplifies motor control by integrating Hall sensor logic and an internal PWM duty cycle controller that can be driven by a simple analog voltage.
Why Choose This Part
This controller offers significant board space savings by integrating Hall commutation logic and a speed-control PWM generator into a compact 28-pin QFN package. It provides critical protection features including latched thermal shutdown, undervoltage lockout, and adjustable dead time to ensure power stage reliability. The ability to control speed via an analog voltage or an external PWM signal provides versatile interfacing for both simple and complex control systems.
Applications
Key Specifications
Getting Started
When designing with the A4915METTR-T, select external N-channel MOSFETs with gate charge characteristics compatible with the 10nF load rating for optimal switching performance. Engineers should provide a stable 3V to 5.5V VDD supply and route the Hall sensor inputs with adequate filtering to prevent noise-induced commutation errors. Evaluation can be performed using standard BLDC motor test benches by applying an analog voltage to the SPEED pin to verify the internal PWM duty cycle range.
