US 12,438,471 B2
Circuit and method for controlling rectifier, and circuit including the rectifier
Huajuan Xiao, Beijing (CN); Donghao Li, Beijing (CN); Ying Cao, Beijing (CN); and Jiashen Tian, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/035,315
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Nov. 6, 2020, PCT No. PCT/CN2020/127122
§ 371(c)(1), (2) Date May 4, 2023,
PCT Pub. No. WO2022/094928, PCT Pub. Date May 12, 2022.
Prior Publication US 2023/0402932 A1, Dec. 14, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 3/00 (2006.01)
CPC H02M 3/33592 (2013.01) [H02M 1/0022 (2021.05); H02M 1/0025 (2021.05); H02M 3/01 (2021.05)] 11 Claims
OG exemplary drawing
 
1. A method for controlling a rectifier, wherein the rectifier comprises a transformer, an inductor coupled with a primary winding of the transformer in parallel, and at least one switching component coupled between a secondary winding of the transformer and an output of the rectifier, wherein the at least one switching component of the rectifier comprises a first switching component and a second component, the method comprising:
sensing a current flowing into a combination of the inductor and the primary winding of the transformer;
generating an indication voltage, based on the sensed current;
generating a reference voltage, based at least on an input voltage of the rectifier, wherein the input voltage is a direct current (DC) voltage and is converted, by a primary side bridge circuit, to an alternative current (AC) voltage, wherein the primary side bridge circuit comprises a third switching component and a fourth switching component;
comparing the indication voltage and a reference voltage; and
driving the at least one switching component, based on a driving signal of the primary side bridge circuit and based on a result of comparing the indication voltage and the reference voltage, wherein said driving comprises:
driving the first switching component, based on a driving signal of the third switching component and based on the result of comparing the indication voltage and the reference voltage; and
driving the second switching component, based on a driving signal of the fourth switching component and based on the result of comparing the indication voltage and the reference voltage;
wherein the first switching component is turned on, if the generated indication voltage is greater than the reference voltage and the third switching component is turned on;
wherein the first switching component is turned off, if the generated indication voltage is less than the reference voltage or the third switching component is turned off;
wherein the second switching component is turned on, if the generated indication voltage is greater than the reference voltage and the fourth switching component is turned on; and
wherein the second switching component is turned off, if the generated indication voltage is less than the reference voltage or the fourth switching component is turned off.