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Product Detailed Parameters
- Description：IC FAN DVR BLDC HALL COMM TSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：-
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：-
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The A4947GLPTR-T is a sinusoidal three-phase brushless DC motor driver manufactured by Allegro MicroSystems. Designed for automotive applications, it integrates Hall sensor commutation logic and operates within a supply voltage range of 6 V to 50 V. The device features an integrated bootstrap diode and supports PWM current regulation with selectable frequencies up to 400 kHz. It is housed in a TSSOP-16-EP package suitable for surface mount technology.
Feature Summary
- Integrates Hall sensor-based commutation logic for three-phase BLDC fan control
- Supports sinusoidal drive waveforms for reduced acoustic noise and vibration
- Includes integrated bootstrap diode and high-side/low-side gate drivers
- Features programmable PWM frequency and current regulation capabilities
Applications
- Automotive cooling fan systems
- Three-phase brushless DC motor control
- Hall-sensor based fan speed regulation
Procurement Notes
Verify the specific suffix GLPTR-T against the official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the target system's voltage levels and thermal requirements. Confirm RoHS compliance status through the manufacturer's documentation before integration into regulated assemblies.
Selection Notes
Select this component for applications requiring precise sinusoidal control of three-phase fans using Hall sensors. It is suitable for environments demanding low electromagnetic interference and quiet operation. Consider the TSSOP-16-EP package for thermal performance and board space constraints in automotive modules.
Part Context
This part belongs to the A4947 series of automotive-grade motor drivers from Allegro MicroSystems. The series focuses on efficient and quiet control of three-phase BLDC motors commonly found in vehicle thermal management systems. The device simplifies design by integrating commutation and drive functions.
Replacement Considerations
Direct substitutes may include other Allegro three-phase BLDC drivers with similar pinouts and voltage ratings. Verify functional equivalence regarding Hall sensor input requirements and PWM interface compatibility before substitution.
