US 12,438,453 B2
Method and apparatus for reducing electromagnetic interference in switching power supplies
Shengyuan Li, Irvine, CA (US); Leon Samuel Wang, Irvine, CA (US); and Xicheng Jiang, Irvine, CA (US)
Assigned to Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed by Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed on Feb. 22, 2023, as Appl. No. 18/113,004.
Prior Publication US 2024/0283353 A1, Aug. 22, 2024
Int. Cl. H02M 1/44 (2007.01); H02M 3/158 (2006.01)
CPC H02M 1/44 (2013.01) [H02M 3/158 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a circuit including an inductor and a switch configured to allow a current to flow through the inductor and charge a capacitor of the circuit;
a first circuit coupled to the circuit, wherein the first circuit is configured to simulate an event; and
a second circuit, comprising a multiplexer, configured to:
set a threshold for triggering the event, while partially compensating a propagation delay,
generate, based at least on the propagation delay, a control signal to turn off the switch, and
provide a particular code for the first circuit to further compensate the propagation delay.