Patent ID: 11870363
Assignee: CYPRESS SEMICONDUCTOR CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. The flyback converter system of claim 15, wherein the secondary side controller further comprises:
a zero-crossing detector (ZCD) circuit to detect a zero crossing of the voltage sensed at the SR sense pin; and
a delay circuit coupled to an output of the valley detect transistor, the delay circuit programmed to a provide a total delay comprising:
a loop turn-around delay determined as a time from when a turn-on signal is sent to a power switch (PS) in a primary side of the flyback converter to a time when the voltage sensed at the SR sense pin crosses zero; and
peak-to-peak delay determined as a time between peaks of the voltage sensed at the SR sense pin by the peak detect transistor.