Title:
DC-DC CONVERTER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/027468
Kind Code:
A1
Abstract:
Provided is a DC-DC converter circuit, which is capable of operating at three levels while producing no common mode current. The DC-DC converter circuit comprises: an input inductor (L), a first capacitor (C1), a second capacitor (C2), a fly capacitor (Cf), a first switch (S1), a second switch (S2), a first inductor (Lr1), a first diode (D1), a first buffer circuit, a third switch (S3), a fourth switch (S4), a second inductor (Lr2), a second diode (D2), and a second buffer circuit; a power supply, the input inductor (L), the first diode (D1), the second diode (D2), the first capacitor (C1), and the second capacitor (C2) are connected in series. The first terminal (3) of the fly capacitor (Cf) is connected between the first diode (D1) and the second diode (D2), the second end (4) of the fly capacitor (Cf) is connected between the first switch (S1) and the third switch (S3), and the second terminal (4) of the fly capacitor (Cf) is also connected between the second switch (S2) and the second inductor (Lr2).
Inventors:
WANG JUN (CN)
XU HOUJIAN (CN)
LIN TIANSAN (CN)
ZHANG FANGPO (CN)
XU HOUJIAN (CN)
LIN TIANSAN (CN)
ZHANG FANGPO (CN)
Application Number:
PCT/CN2020/101898
Publication Date:
February 18, 2021
Filing Date:
July 14, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M3/158; H02M1/34
Foreign References:
| CN110649810A | 2020-01-03 | |||
| CN108923632A | 2018-11-30 | |||
| CN110034681A | 2019-07-19 | |||
| CN105340164B | 2018-11-27 | |||
| EP2221951A1 | 2010-08-25 | |||
| EP2782235A1 | 2014-09-24 | |||
| CN201910754932A | 2019-08-15 |
Other References:
See also references of EP 4016828A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
Download PDF: