US 12,255,532 B2
Modular AC/DC power conversion module for power sources and loads and method of driving the same
Chen Yuan Wu, Taoyuan (TW); Chih Hsien Wang, Taoyuan (TW); Kuo Cheng Wang, Taoyuan (TW); and Cheng Chung Lee, Taoyuan (TW)
Assigned to CHROMA ATE INC., Taoyuan (TW)
Filed by CHROMA ATE INC., Taoyuan (TW)
Filed on Oct. 27, 2022, as Appl. No. 18/050,060.
Claims priority of application No. 110142512 (TW), filed on Nov. 16, 2021.
Prior Publication US 2023/0155497 A1, May 18, 2023
Int. Cl. H02M 3/157 (2006.01); H02M 1/00 (2006.01); H02M 3/139 (2006.01); H02M 3/158 (2006.01)
CPC H02M 3/139 (2013.01) [H02M 1/0025 (2021.05); H02M 3/157 (2013.01); H02M 3/1582 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A modular AC/DC power conversion module for power sources and loads, comprising:
an AC/DC converter, including a first power element, the first power element being electrically coupled to an external power source;
a DC/DC converter, including a second power element and a third power element, the second power element and the third power element being electrically coupled to each other, the second power element being electrically coupled to the AC/DC converter, and the third power element being electrically coupled to an output power conversion module;
a buck auxiliary circuit, electrically coupled between the AC/DC converter and the DC/DC converter; and
a microprocessor, electrically coupled to the AC/DC converter, the DC/DC converter and the buck auxiliary circuit,
wherein when the AC/DC converter is electrically coupled to the external power source, the microprocessor is electrically powered by the buck auxiliary circuit; under control of the microprocessor, the second power element and the third power element are activated for a certain time period, and then, the first power element is activated; an output voltage of the AC/DC converter is boosted, and an output voltage of the DC/DC converter is boosted accordingly;
wherein the AC/DC converter further includes a first driving circuit, an input voltage-sensing circuit and an input current-sensing circuit; the first driving circuit is electrically coupled to the first power element, the microprocessor and the buck auxiliary circuit; the input voltage-sensing circuit and the input current-sensing circuit are electrically coupled to the microprocessor and the buck auxiliary circuit, wherein when the AC/DC converter is electrically coupled to the external power source, the first driving circuit, the input voltage-sensing circuit and the input current-sensing circuit are electrically energized by the buck auxiliary circuit; the input voltage-sensing circuit and the input current-sensing circuit respectively provide an input voltage value and an input current value to the microprocessor.