US 11,929,671 B2
Current-mode control for multistage interleaved resonant converters
Roman Mazgut, Zilina (SK)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US)
Filed on Jan. 4, 2022, as Appl. No. 17/646,944.
Claims priority of provisional application 63/180,503, filed on Apr. 27, 2021.
Prior Publication US 2022/0345035 A1, Oct. 27, 2022
Int. Cl. H02M 3/00 (2006.01); H02M 1/00 (2006.01); H02M 3/335 (2006.01)
CPC H02M 3/01 (2021.05) [H02M 1/0019 (2021.05); H02M 1/0043 (2021.05); H02M 3/33571 (2021.05)] 21 Claims
OG exemplary drawing
 
1. A method for operating an interleaved resonant power converter, the method comprising:
generating a first pair of complementary signals to drive a first stage of the interleaved resonant power converter;
generating a second pair of complementary signals to drive a second stage of the interleaved resonant power converter;
generating a current-mode control signal based on a current sense signal of the first stage;
adjusting a switching frequency of the first pair of complementary signals based on the current-mode control signal; and
adjusting a switching frequency of the second pair of complementary signals to match the switching frequency of the first pair of complementary signals,
wherein adjusting the switching frequency of the first pair of complementary signals based on the current-mode control signal includes:
switching values of the first pair of complementary signals when the current-mode control signal pulses.