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Semiconductor
SP6300
Quasi-Resonance Flyback Controller
Description
The SP6300 is specifically designed to satisfy the requirements for increased Integration and reliability in offline Quasi-resonant (ZVS: Zero Voltage Switching at switch turn-on) flyback converters. Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET's turn-on Converter's power capability variations with the mains voltage are compensated by line voltage feedforward. At light load the device features a special function that automatically lowers the operating frequency still maintaining the operation as close to ZVS as possible.