Search International and National Patent Collections

1. (WO2018126554) SMART CORRECTION WAVE VOLTAGE CONVERSION CIRCUIT BASED ON PFC, FULL BRIDGE, AND HALF BRIDGE

Pub. No.:    WO/2018/126554    International Application No.:    PCT/CN2017/080980
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Thu Apr 20 01:59:59 CEST 2017
IPC: H02M 5/458
Applicants: GUANGDONG BESTEK E-COMMERCE CO., LTD
广东百事泰电子商务股份有限公司
Inventors: LIAO, Zhigang
廖志刚
Title: SMART CORRECTION WAVE VOLTAGE CONVERSION CIRCUIT BASED ON PFC, FULL BRIDGE, AND HALF BRIDGE
Abstract:
A smart correction wave voltage conversion circuit based on PFC, full bridge, and half bridge, comprising: an input unit (10), a PFC boost unit (20), a full bridge isolation transformation unit (30), and a phase inversion unit (40). The full bridge isolation transformation unit (30) comprises a first switch transistor (Q6), a second switch transistor (Q7), a sixth transistor (Q8), a seventh switch transistor (Q9), a transformer (T1), a first diode (D5), a second diode (D6), and a wave filter inductor (L3); a source electrode of the sixth switch transistor (Q8) is connected to a first end of a primary winding of the transformer (T1), a drain electrode of the second switch transistor (Q7) is connected to a second end of the primary winding of the transformer (T1), a source electrode of the first switch transistor (Q6) is connected to the second end of the primary winding of the transformer (T1), a drain electrode of the seventh switch transistor (Q9) is connected to the first end of the primary winding of the transformer (T1), and a middle tap of the secondary winding of the transformer (T1) is connected to a rear end ground. The present circuit can improve the power factor value and the output voltage quality.