A5932GESSR-1-T

Overview

The A5932GESSR-1-T is a sensorless brushless DC motor controller designed for sinusoidal drive applications. It operates within a supply voltage range of 5.5V to 50V and supports a maximum output current of 61.6 mA. The device functions reliably across an operating temperature range of -40°C to +105°C. It utilizes a 24-contact QFN package measuring 4mm x 4mm with an exposed thermal pad, suitable for surface mount installation.

Feature Summary

• Implements sinusoidal drive technology to minimize noise and vibration in high-power fans
• Features quiet start capability using sine voltage distribution for smooth acceleration
• Includes configurable closed-loop speed curves and proprietary efficient control algorithms
• Provides comprehensive protection mechanisms including overcurrent limit and short circuit protection

Applications

• High-power fan noise reduction systems
• Sensorless BLDC motor control
• Automotive cooling applications
• Quiet operation ventilation units

Procurement Notes

Verify the specific suffix 'ES' indicates the 4mm x 4mm QFN package with exposed thermal pad. Confirm that the '-1-T' designation aligns with the required tape and reel packaging quantity. Ensure the component meets AEC-Q100 automotive grade requirements if intended for automotive use. Cross-reference the manufacturer part number against official Allegro MicroSystems documentation to avoid counterfeit or obsolete stock.

Selection Notes

Select this component when low acoustic noise and vibration are critical performance metrics. It is appropriate for applications requiring sensorless control without Hall effect sensors. Consider the 50V maximum rating for system compatibility. Evaluate the 24-pin QFN footprint for PCB layout constraints. Verify thermal dissipation capabilities given the exposed pad design for sustained operation at elevated temperatures.

Part Context

This model belongs to the A5932 series of motor controllers from Allegro MicroSystems. It represents an evolution of the A5931 architecture with improved overcurrent limiting features. The series targets automotive and industrial fan applications where reliability and acoustic performance are prioritized over simple trapezoidal commutation methods.

Replacement Considerations

The A5932GLPTR-1-T is a documented alternative within the same family offering similar OCL improvements.