Patent ID: 11955895
Assignee: DIALOG SEMICONDUCTOR INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A primary-side controller for a flyback converter, comprising:
a communication interface for receiving a control voltage from a secondary-side controller for the flyback converter during a steady-state operation following a startup of the flyback converter;
a switch controller configured to cycle a power switch according to secondary-side control only during the steady-state operation responsive to the control voltage to regulate an output voltage of the flyback converter through the secondary-side control; and
a primary-side waveform analyzer configured to sense an auxiliary winding voltage during the startup of the flyback converter to determine a sensed output voltage, wherein the switch controller is further configured to cycle the power switch according to primary-only feedback only during the startup of the flyback converter responsive to the sensed output voltage from the primary-side waveform analyzer to regulate the output voltage of the flyback converter through the primary-only feedback.