US 12,341,432 B2
Full bridge LLC converter system and method of voltage regulation using a full bridge LLC converter
Tae Yong Kim, Singapore (SG)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on Apr. 25, 2023, as Appl. No. 18/139,088.
Prior Publication US 2024/0364225 A1, Oct. 31, 2024
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/33571 (2021.05) [H02M 1/0058 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A method of voltage regulation using a full bridge LLC converter, the method comprising:
selecting a control mode for the full bridge LLC converter based on a nominal output voltage for the full bridge LLC converter, wherein selecting the control mode comprises selecting a first control mode if the nominal output voltage is a first voltage and selecting a second control mode if the nominal output voltage is a second voltage less than the first voltage;
in the first control mode, operating the full bridge LLC converter as a full bridge under frequency control; and
in the second control mode, operating a first half bridge of the full bridge LLC converter under frequency control and operating a second half bridge of the full bridge LLC converter under duty cycle control with valley switching.