WIDE-RANGE SOFT-SWITCH DIRECT-CURRENT CONVERSION CIRCUIT AND CONTROL METHOD THEREFOR

WIPO Patent Application WO/2019/033603

A1

A wide-range soft-switch direct-current conversion circuit and a control method therefor. The circuit comprises first and second series resonance inversion circuits (210, 220), first and second high-frequency isolation transformers (TRA, TRB), a rectification circuit (300) and a controller (400). The input ends of the first and second series resonance inversion circuits (210, 220) are used for connecting to a direct-current source (V1); two output ends of the first and second series resonance inversion circuits (210, 220) are respectively connected to two ends of primary sides of the first and second high-frequency isolation transformers (TRA, TRB); secondary sides of the first and second high-frequency isolation transformers (TRA, TRB) are connected in series and are then connected to the rectification circuit (300); the controller (400) inputs control signals to the first and second series resonance inversion circuits (210, 220); and two output ends of the rectification circuit (300) are used for connecting to a load (V2). By means of the method, the inversion circuits (210, 220) can operate in an in-phase mode or in an anti-phase mode; and same can not only be adaptive to a wide input voltage range, but can also have a wider output voltage range.

LI LUNQUAN (CN)
LIU JIAJIAN (CN)
YAN SHA (CN)
ZHENG CHEXIAO (CN)

PCT/CN2017/112380

February 21, 2019

November 22, 2017

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SHENZHEN BOYN ELECTRIC CO LTD (CN)

H02M3/335

CN107276418A	2017-10-20
CN202872641U	2013-04-10
CN207184330U	2018-04-03
CN1825743A	2006-08-30
CN104283449A	2015-01-14
US20140153293A1	2014-06-05

CHINA TRUER IP (CN)

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