US 11,791,735 B2
DC-DC converter, bidirectional DC-DC converter and control method
Yue Chen, Shenzhen (CN); Elvis Wei Shi, Villach (AT); Sanbao Shi, Shenzhen (CN); and Tangshun Wu, Shenzhen (CN)
Assigned to Infineon Technologies Austria AG, Villach (AT)
Filed by Infineon Technologies Austria AG, Villach (AT)
Filed on Nov. 29, 2021, as Appl. No. 17/536,378.
Claims priority of application No. 202011357076.1 (CN), filed on Nov. 27, 2020.
Prior Publication US 2022/0173669 A1, Jun. 2, 2022
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01)
CPC H02M 3/33584 (2013.01) [H02M 1/0009 (2021.05); H02M 1/08 (2013.01); H02M 3/33573 (2021.05)] 21 Claims
OG exemplary drawing
 
1. A DC-DC converter, comprising:
a transformer;
a first switching circuit and a second switching circuit, each coupled to one of two sides of the transformer, respectively, and each comprising at least two switches;
a first current detection module coupled to a first side of the transformer and configured to detect a current at the first side;
a first conversion module coupled to an output of the first current detection module and configured to convert a signal of the current detected by the first current detection module to a voltage signal;
a first comparison module coupled to an output of the first conversion module and configured to compare the voltage signal from the first conversion module with a reference voltage signal, and generate a first modulation signal based on a result of the comparison; and
a first controller coupled to an output of the first comparison module and configured to generate a first control signal for at least one switch in the second switching circuit, the first control signal being based on the first modulation signal and a drive signal of at least one switch in the first switching circuit.