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Three-Phase Sensorless Fan Driver IC for Automotive Applications

A5947

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The A5947 simplifies the design of sensorless automotive fan systems with its integrated closed-loop speed control, sinusoidal drive, and programmable speed curves. Eliminates the need for a microcontroller and reduces PCB space.

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Top Features

Packaging

  • AEC-Q100 qualified
  • Speed curve configuration via EEPROM
  • I2C serial port
  • Sinusoidal modulation for reduced audible noise and low vibration
  • Sensorless (no Hall sensors required)
  • Low RDS(ON) power MOSFETs
  • 3.3 V / 20 mA linear regulator
  • PWM or analog speed input
  • FG speed output
  • Slew rate control
  • Lock detection Soft start
  • Low power standby mode
  • Overcurrent protection
  • Overvoltage protection

 

Typical Applications:

  • Automotive Seat Ventilation Fans
  • Automotive ADAS DPU/CPU Cooling Fans
  • Automotive Battery Cooling Fans
  • Telecom Server Data Center Cooling Fans
  • IC&C GPU/CPU Cooling Fans
  • Industrial Motor Control

28-contact QFN with exposed thermal pad 5 mm x 5 mm x 0.90 mm (ET package)

20-lead TSSOP with exposed thermal pad (LP package)

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Part Number Specifications and Availability

Documentation and Resources

Documentation

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Documents Found: 32
Document Type Document Name
Brochure
Brochure: Driving Change by Advancing Personal Mobility Through Cutting-Edge Technology
Guide
A5947GET Evaluation Board User Guide
Technical Article
Overcoming Battery Cooling Challenges to Enable Safe and Reliable Electric Two-Wheelers