US 12,355,342 B2
Switch-mode converter, control method for the same, and control circuit for the same
Zhan Chen, Hangzhou (CN); Qiukai Huang, Hangzhou (CN); Jin Jin, Hangzhou (CN); and Guiying Zhang, Hangzhou (CN)
Assigned to Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed by Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou (CN)
Filed on Oct. 14, 2022, as Appl. No. 17/965,938.
Claims priority of application No. 202111205518.5 (CN), filed on Oct. 15, 2021.
Prior Publication US 2023/0119541 A1, Apr. 20, 2023
Int. Cl. H02M 1/32 (2007.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01); H02M 3/335 (2006.01); H02M 7/06 (2006.01)
CPC H02M 1/32 (2013.01) [H02M 1/0009 (2021.05); H02M 1/08 (2013.01); H02M 3/33515 (2013.01); H02M 7/06 (2013.01); H02M 3/33523 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of controlling a switch-mode converter, the method comprising:
a) obtaining an overcurrent reference threshold according to an output voltage sampling signal that is indicative of an output voltage of the switch-mode converter, wherein the overcurrent reference threshold is configured to gradually decrease as the output voltage increases within a predetermined range of the output voltage; and
b) generating an over current protection triggering signal in response to an output current sampling signal and the overcurrent reference threshold meeting a predetermined criterion, thereby triggering the switch-mode converter to enter a protection state, wherein the output current sampling signal is indicative of an output current of the switch-mode converter.