GC5958
Version V1.1 Page 1
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Three-Phase Sine-wave Sensor-Less Fan Motor Driver
Chip description
：
The GC5958 provides all the circuitry for
sensor-less speed control of three-phase brushless
DC motor. The Sine-wave Driver Method will be
better low-noise. The controller functions include
start-up circuit, back-EMF commutation control,
Pulse Width Modulation (PWM) speed control,
lock protection, and thermal shutdown circuit.
The GC5958 is suitable for both game machine
and CPU cooler that need silent drivers. It is
available in DFN3x3-10 package.
Chip features
：
PWM Quasi-Sinusoidal Driver
Three-Phase Sensor-Less Drive Method
Adjustable Forced Commutation Frequency
(for Start-up)
Built-In External PWM Speed Control
Built-In Quick Start Function
FG (Rotation Speed Detection) Output
Soft Switching Circuit (for Noise Reducing)
Power Saving Function (PWM Duty Input
is 0%)
Built-In Lock Protection and Auto Restart
Function
Thermal Shutdown Circuit
Chip application
：
Silent Fan Motors
Product name Package Type
Detail
description
GC5958 DFN3x3-10
3.0*3.0，e=0.5
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