FEEDBACK (FB)-SIGNAL-BASED TWO-STAGE INTERACTION METHOD USED IN TWO-STAGE SWITCH POWER SOURCE

WIPO Patent Application WO/2024/093604

A1

Disclosed in the present invention is a feedback (FB)-signal-based two-stage interaction method used in a two-stage switch power source. The method comprises: a power factor correction (PFC) controller acquiring an FB signal transmitted by a DC/DC controller; the PFC controller acquiring the power of a PFC circuit; when a falling-edge signal feature in the FB signal is lower than a predetermined value, monitoring the FB signal according to a power value of the PFC circuit and by using a short-falling-edge anti-shake module or a long-falling-edge anti-shake module, and generating a control signal for turning off the PFC circuit; and when a rising-edge signal feature appears in the FB signal, detecting whether the FB signal is greater than a predetermined second FB signal threshold value, and generating a control signal for turning on the PFC circuit.

WO/2008/089540	CONTROL ARRANGEMENT FOR A RESONANT MODE POWER CONVERTER
JP4138497	Power factor improvement method of power supply system, power supply system, switching power supply and uninterruptible power supply
WO/2022/133203	PORTABLE POWER SUPPLY

HU CHENGYU (CN)
WANG NAILONG (CN)

PCT/CN2023/123109

May 10, 2024

October 06, 2023

Click for automatic bibliography generation  

X SIGNAL INTEGRATED CO LTD (CN)

H02M1/42; H02M1/00; H02M1/32; H02M3/04

CN115642797A	2023-01-24
CN105553292A	2016-05-04
CN102801329A	2012-11-28
US20120014142A1	2012-01-19
US20140241018A1	2014-08-28

JINGWEI ZHANG: "Research on Dimming Control Strategy of Two-stage LED Driver", ELECTRIC SWITCHGEAR, vol. 60, no. 2, 15 April 2022 (2022-04-15), XP093168601, ISSN: 1004-289X, DOI: 10.3969/j.issn.1004-289X.2022.02.017

BEIJING ZHIYU ZHENGXIN INTELLECTUAL PROPERTY AGENCY (CN)

View/Download PDF      PDF Help

Previous Patent: STEERING MECHANISM AND VEHICLE

Next Patent: DATA TRANSMISSION METHODS, DEVICE, AND STORAGE MEDIUM