Invention Grant
- Patent Title: Voltage bus discharge for universal serial bus power delivery
-
Application No.: US17737842Application Date: 2022-05-05
-
Publication No.: US12074529B2Publication Date: 2024-08-27
- Inventor: Arun Khamesra , Hariom Rai
- Applicant: Cypress Semiconductor Corporation
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H02M3/335
- IPC: H02M3/335 ; H02M1/00 ; H02M1/08 ; H02M3/157 ; H02M3/158

Abstract:
A secondary side controller for a flyback converter can include a synchronous rectifier (SR) gate driver pin coupled to a gate of an SR transistor on a secondary side of the flyback converter. An error amplifier is coupled to an output of a voltage bus of the flyback converter, the error amplifier to generate an error signal indicative of a voltage of the output of the voltage bus. Control logic is coupled to the error amplifier and to the SR transistor, the control logic to: detect when the voltage is at least a threshold percentage higher than a sink voltage required by a sink device coupled to the output of the voltage bus; detect assertion of a skip mode signal; and cause the SR transistor to be driven during a skip mode such as to partially discharge an output capacitor coupled to the output of the voltage bus.
Public/Granted literature
- US20230361689A1 VOLTAGE BUS DISCHARGE FOR UNIVERSAL SERIAL BUS POWER DELIVERY Public/Granted day:2023-11-09
Information query
IPC分类: