A4923GETTR-R

Overview

The A4923GETTR-R is a three-phase sinusoidal motor controller designed for brushless DC motors. It features high-current gate drivers capable of driving all N-channel power MOSFETs in a 3-phase bridge. The device utilizes PWM for sinusoidal current control to minimize vibration, noise, and torque ripple. Key electrical parameters include a supply voltage range of 5V to 50V, an operating temperature range of -40°C to +105°C, and a typical switching frequency of 70kHz. It integrates internal protection circuits such as undervoltage lockout (UVLO), overcurrent protection, and thermal shutdown.

Feature Summary

• Sinusoidal drive current for minimized vibration and noise
• High-current gate drivers for N-channel MOSFETs
• Integrated protection including UVLO, overcurrent, and thermal shutdown

Applications

• Three-phase brushless DC motor control
• Fan speed control systems
• Pump motor drives

Procurement Notes

Verify the specific suffix 'R' against official Allegro documentation to confirm tape-and-reel packaging specifications and any distinct functional differences compared to the 'T' variant. Ensure compatibility with existing PCB footprints and thermal management requirements for the QFN package before finalizing procurement orders.

Selection Notes

Select this component for applications requiring smooth sinusoidal commutation to reduce acoustic noise and mechanical vibration. It is suitable for systems needing integrated gate driving capabilities without external discrete drivers. Consider the 32-lead QFN package size and thermal dissipation characteristics when designing the layout.

Part Context

The A4923 belongs to Allegro's family of three-phase motor controllers. It is part of the A4923 series, which includes variants like A4923GETTR-T. This specific part number denotes the roll-packaged version intended for automated assembly processes, differing primarily in shipping configuration from other variants.

Replacement Considerations

A4923GETTR-T is a confirmed substitute with identical electrical characteristics but potentially different packaging orientation or reel specifications.