A5932GLPTR-1-T

Overview

The A5932GLPTR-1-T is a three-phase sinusoidal sensorless fan controller manufactured by Allegro MicroSystems. It operates within a supply voltage range of 5.5 V to 50 V and supports an operating temperature range from -40 °C to +105 °C. The device utilizes a 24-lead TSSOP package with an exposed thermal pad (suffix LP). Key electrical parameters include a maximum output current of 61.6 mA and a typical operating supply current of 11 mA. It is designed for high-efficiency control algorithms and includes features such as overcurrent limit and short-circuit protection.

Feature Summary

• Incorporates sinusoidal drive technology to minimize audible noise and vibration in high-power fans.
• Features proprietary high-efficiency control algorithm with automatic phase advance and windmill detection.
• Supports configurable closed-loop speed curves via the SPD input for precise speed management.
• Includes comprehensive fault management with overcurrent limit, short-circuit protection, and lock detection.

Applications

• High-power cooling fans requiring low noise operation
• Automotive grade fan control systems
• Sensorless brushless DC motor applications

Procurement Notes

Verify the specific suffix 'LP' corresponds to the 24-lead TSSOP package with exposed thermal pad when sourcing. Confirm that the '-1' variant aligns with the intended OCL improvement specifications documented in the official datasheet. Ensure compatibility with automotive AEC-Q100 qualification requirements if deploying in vehicle environments. Cross-reference the manufacturer part number against authorized distributor listings to avoid counterfeit components.

Selection Notes

Select this component for applications prioritizing acoustic performance due to its sinusoidal drive capability. The device is suitable for designs requiring sensorless control of three-phase motors. Consider the 24-lead TSSOP package for PCB layout constraints. Evaluate the 61.6 mA output current limit against the specific fan motor requirements to ensure adequate drive capability without exceeding thermal limits.

Part Context

The A5932 belongs to Allegro's family of three-phase sinusoidal sensorless fan controllers. It is distinct from standard PWM drivers by its focus on noise reduction through sinusoidal voltage profiles applied to motor windings. The device integrates direction and brake inputs alongside fault outputs, providing a complete solution for advanced fan management in automotive and industrial sectors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and functional compatibility with existing designs before considering alternative motor controllers from the same or different manufacturers.

FAQ

What type of drive waveform does the A5932 use?

The A5932 uses a sinusoidal drive waveform to minimize audible noise and vibration compared to traditional square wave drives.

Is the A5932 qualified for automotive applications?

Yes, the A5932 is automotive grade and AEC-Q100 qualified.