Title:
POWER SOURCE CONVERSION CIRCUIT AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/087911
Kind Code:
A1
Abstract:
A power source conversion circuit and an electronic device, which relate to the field of power sources, and by means of which the power conversion efficiency of a power source conversion circuit can be improved. The power source conversion circuit comprises: an isolation transformer (41), the isolation transformer (41) comprising at least two groups of primary-side coils (Np) and at least one group of secondary-side coils (Ns), wherein each group of primary-side coils (Np) is connected to a half-bridge circuit (43) by means of a first resonant network (42); half-bridge circuits (43) corresponding to the at least two groups of primary-side coils (Np) are connected in series between two electrodes (+, -) of a power source (Vin); each half-bridge circuit (43) is connected in parallel to a voltage division circuit (44); each voltage division circuit (44) contains a first capacitor (C1) and a second capacitor (C2), which are connected in series; one end of each first resonant network (42) is connected to an intermediate node (a) of the half-bridge circuit (43), and the other end of each first resonant network (42) is connected to a connection point (x) between the first capacitor (C1) and the second capacitor (C2); and each secondary-side coil (Ns) is connected to an input end of a rectification circuit (45), and an output end of each rectification circuit (45) corresponding to the at least one group of secondary-side coils (Ns) is connected in series between two electrodes (+, -) of an output end (Vo) of the power source conversion circuit.
Inventors:
HU ZHIXIANG (CN)
LIU ZHIHUA (CN)
YE GANG (CN)
LIU ZHIHUA (CN)
YE GANG (CN)
Application Number:
PCT/CN2020/124501
Publication Date:
May 05, 2022
Filing Date:
October 28, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M3/335
Foreign References:
| CN107276418A | 2017-10-20 | |||
| CN105207487A | 2015-12-30 | |||
| CN106230264A | 2016-12-14 | |||
| CN208353221U | 2019-01-08 | |||
| US9350257B2 | 2016-05-24 |
Other References:
See also references of EP 4216420A4
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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