Brushless DC Drivers
QuietMotion™ - precision motor control for whisper-quiet performance.
Allegro’s brushless DC motor drivers combine decades of motion control expertise with advanced integration to accelerate development and performance. Supporting up to100 V systems, our portfolio includes integrated or external gate driver ICs tailored for automotive, industrial, and consumer applications. With ISO 26262-compliant options, embedded QuietMotion™ algorithms, and industry-leading ASIL D support, we deliver compact, precise, and safety-ready solutions for high-efficiency motor control.
Documentation & Resources
Application Note
Pulse-Width Modulation (PWM) Example Code for A89211/12/24 New
The top-level architecture of the PWM module is shown in Figure 1. The clock frequency (fPWM) of this module is 80 MHz. The register settings are set by the AMBA high-performance bus (AHB).
Application Note
Doubler Charge-Pump Scheme for Gate Drivers in Automotive Applications New
AN296389 - This application note discusses the main advantages of the charge pump employed in the Allegro A89199 gate driver. Full operation of the doubler charge pump, requirements, and best practices for selection of both the pump and the storage capacitors are discussed.
Application Note
Advanced Negative Voltage Transient Test for Gate Drivers in Automotive Applications New
AN296385 - This application note investigates the sensitivity of the gate driver when exposed to transient negative voltage conditions using tests of the Allegro AMT49100 48 V gate driver.
Whitepaper
Revolutionizing eBike and Personal Mobility Motor Control with the A89212 System on Chip
Maximize eBike range and reliability with the A89212 SoC. Featuring a 90V range, ARM Cortex-M4 core, and -18V transient protection for robust, sensorless FOC motor control.
Whitepaper
AM099 - Silence, Efficiency and Intelligence in the Modern Home
The Allegro A89347G, a fully integrated, sensorless, sinusoidal BLDC motor driver, provides a robust solution specifically engineered to meet the demands of residential fans and pumps.
Guide
A89224 Evaluation Board User Guide
The A89224 evaluation board is a high-performance processor with integrated three-phase gate driver and precision current-sense capability.
Whitepaper
48V 系统如何革新机器人技术
工业自动化对更强大、更高效机器的需求持续增长，机器人技术正以惊人的速度迅猛发展。这一趋势推动了供电电子系统的重大变革 — 从传统的 12V 架构向更高电压，尤其是 48V 系统转型。
Whitepaper
Power Smarter Tools with the A89212 SoC
Discover how Allegro’s A89212 Motor Control SoC enables faster, more efficient cordless tool designs—across drills, saws, e-bikes, and more.
Guide
A3921 Evaluation Board User Guide
The A3921 is a full-bridge controller for use with external N-channel power MOSFETs and is specifically designed for automotive applications with high-power inductive loads, such as brush DC motors.
Guide
AMT4952 Evaluation Board User Guide
The AMT49502 evaluation board is designed to aid system designers with evaluating the operation and performance of the Allegro AMT49502 48 V safety automotive, half-bridge MOSFET driver.
Guide
AMT49400 Evaluation Board User Guide
The AMT49400 evaluation board is designed to aid system designers in evaluating the operation and performance of the AMT49400 integrated sensorless FOC BLDC driver IC.
Guide
A3941 Evaluation Board User Guide
The A3941 is a full-bridge controller for use with external N-Channel power MOSFETs designed for automotive applications with high-power inductive loads like brush DC motors.
Guide
APEK89211 and APEK89212 Evaluation Board User Guide
The A89211 or A89212 (A89211/2) evaluation board is a high performance processor with integrated three-phase gate driver and precision current-sense capability.
Guide
A89332-3 Evaluation Board User Guide
The A89332-3 evaluation board is designed to aid users in evaluating the operation and performance of the A89332-3 motor-controller integrated circuit (IC).
Guide
A89500 Evaluation Board User Guide
This board provides the basic components required to use the A89500 to drive a motor.