US 11,736,022 B2
Power supply and winding switch control via an integrator voltage
Andrey Malinin, Fort Collins, CO (US); Renato Bessegato, Oberhaching (DE); and Yong Siang Teo, Singapore (SG)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on Jul. 29, 2020, as Appl. No. 16/941,890.
Prior Publication US 2022/0038012 A1, Feb. 3, 2022
Int. Cl. H02M 3/335 (2006.01); G01R 19/165 (2006.01); H03K 5/24 (2006.01); G05F 1/56 (2006.01); G06G 7/18 (2006.01); G01R 19/175 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/33515 (2013.01) [G01R 19/16528 (2013.01); G01R 19/175 (2013.01); G05F 1/561 (2013.01); G06G 7/18 (2013.01); H03K 5/24 (2013.01); H02M 1/0025 (2021.05)] 29 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a power supply controller operative to:
monitor a voltage of a secondary winding magnetically coupled to a primary winding, the secondary winding operative to receive energy from the primary winding;
derive an integrator voltage based on the monitored voltage from the secondary winding;
control an operational state of a first switch coupled to the secondary winding based on the integrator voltage; and
wherein power supply controller is further operative to activate the first switch to an ON-state in response to detecting that a magnitude of the monitored voltage crosses a first threshold value during a window of time in which a magnitude of the integrator voltage is greater than a second threshold value.