Mayer & Williams PC
Flyback power switch structure for bridgeless rectifier
A flyback power switch structure for bridgeless rectifier includes a main transformer, a primary side circuit, a secondary side circuit, and a feedback control circuit. The main transformer includes a primary coil and a secondary coil. The primary side circuit is connected to the input AC power supply and the primary coil of main transformer, and is provided with a first switch component, a second switch component, a third switch component, and a fourth switch component. The secondary side circuit is connected to the secondary coil of said main transformer, generating an output voltage. The feedback control circuit is connected to the secondary side circuit and the first, second, third and fourth switch components of primary side circuit, comparing phase signals according to the feedback signals and the first and second terminal voltages of an input AC power supply to control the actuation of the first, second, third and fourth switch components.
NANOWATT INC.
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Chung-Fu
Chou