Click to expand full text
FAN400C — Low-Power, Green-Mode, PWM Flyback Power Controller without Secondary Feedback (CC)
www.DataSheet4U.com
September 2008
FAN400C — Low-Power, Green-Mode, PWM Flyback Power
Controller without Secondary Feedback (CC)
Features Linearly Decreasing PWM Frequency Green Mode Under Light-Load and Zero-Load
Conditions Circuitry
Description
This highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load and zero-load conditions. This green mode enables the power supply to meet international power conservation requirements.