US 9,812,979 B1
Estimation of transformer leakage inductance and associated delay in voltage converters
Darryl Tschirhart, Torrance, CA (US)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on Dec. 30, 2016, as Appl. No. 15/396,006.
Int. Cl. H02M 3/335 (2006.01); H02M 1/14 (2006.01); G01R 31/02 (2006.01)
CPC H02M 3/33592 (2013.01) [G01R 31/025 (2013.01); G01R 31/027 (2013.01); H02M 1/14 (2013.01); H02M 3/33507 (2013.01); H02M 3/33569 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A voltage converter, comprising:
a power stage including two or more power switches; and
a controller configured to:
determine, for a first load condition, a first output current of the voltage converter and a corresponding first time delay through the voltage converter;
determine, for a second load condition, a second output current of the voltage converter and a corresponding second time delay through the voltage converter; and
determine a load-dependent delay of the voltage converter based upon the first output current, the first time delay, the second output current, and the second time delay.