Title:
VIENNA PFC-BASED SMART HALF BRIDGE SINE WAVE VOLTAGE CONVERSION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/129835
Kind Code:
A1
Abstract:
A Vienna PFC-based smart half bridge sine wave voltage conversion circuit, comprising: an input unit (10), a Vienna PFC boost unit (20), and a half bridge inversion unit (30). The Vienna PFC boost unit comprises a boost inductor (L2), a first switch transistor (Q3), a first diode (D1), a second diode (D2), a third diode (D3), a fourth diode (D4), a fifth diode (D5), a sixth diode (D6), a first electrolytic capacitor (C1), and a second electrolytic capacitor (C2). The half bridge inversion unit comprises a second switch transistor (Q1), a third switch transistor (Q2), a third electrolytic capacitor (C3), a fourth electrolytic capacitor (C4), and a wave filter inductor (L3). A positive electrode of the fourth electrolytic capacitor acts as a first output end of the half bridge inversion unit, a source electrode of the second switch transistor is connected to a front end of the wave filter inductor, and the back end of the wave filter inductor acts as a second output end of the half bridge inversion unit. The present circuit can improve output voltage quality, reduce high frequency crosstalk, and save circuit costs.
Inventors:
HOU TAO (CN)
Application Number:
PCT/CN2017/081785
Publication Date:
July 19, 2018
Filing Date:
April 25, 2017
Export Citation:
Assignee:
GUANGDONG BESTEK E COMMERCE CO LTD (CN)
International Classes:
H02M1/42; H02M5/458
Foreign References:
| CN1123068A | 1996-05-22 | |||
| CN105305807A | 2016-02-03 | |||
| CN201402792Y | 2010-02-10 | |||
| JP2015035851A | 2015-02-19 | |||
| CN206506442U | 2017-09-19 |
Attorney, Agent or Firm:
GUANGZHOU NANFENG PATENT AGENCY CO. LTD. (CN)
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