US 12,261,533 B2
Circuit for detecting power in a multi-stage power converter
Daryll Plaza Bonavente, Quezon (PH); and Rahul Prabhakar Joshi, Pleasanton, CA (US)
Assigned to POWER INTEGRATIONS, INC., San Jose, CA (US)
Filed by Power Integrations, Inc., San Jose, CA (US)
Filed on Oct. 14, 2022, as Appl. No. 18/046,864.
Prior Publication US 2024/0128875 A1, Apr. 18, 2024
Int. Cl. H02M 1/00 (2007.01); H02M 1/42 (2007.01); H02M 3/335 (2006.01); H02M 1/10 (2006.01); H02M 1/34 (2007.01)
CPC H02M 3/33507 (2013.01) [H02M 1/0006 (2021.05); H02M 1/0009 (2021.05); H02M 1/0032 (2021.05); H02M 1/0048 (2021.05); H02M 1/0064 (2021.05); H02M 1/007 (2021.05); H02M 1/4208 (2013.01); H02M 1/4225 (2013.01); H02M 3/33523 (2013.01); H02M 1/10 (2013.01); H02M 1/348 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A power converter for delivering power to a load, comprising: a first stage; a second stage electrically coupled to the first stage, the second stage including an energy transfer element; and a sensor comprising a first circuit comprising a first diode and a second circuit comprising a second diode, wherein the first circuit has a first response to an output of the energy transfer element based on a reverse recovery time of the first diode and the second circuit has a second response to the output of the energy transfer element based on a recovery time of the second diode, wherein the sensor is configured to selectively provide power to the first stage based on a difference between the first response and the second response.