Title:
ブリッジタイプの同期整流用の外部駆動回路
Document Type and Number:
Japanese Patent JP4620311
Kind Code:
B2
Abstract:
An external driving circuit (21) for a bridge type synchronous rectifier circuit (20) having a first and second first synchronous rectifier (Q3,Q4), a primary driving circuit (14), and a pair of totem pole drivers (16,18). The timing signal for the first and second synchronous rectifiers (Q3,Q4) is derived from the external driving circuit (21). The external driving circuit (21) includes a first and second switch drivers (22,24). The external driving circuit (21) is interfaced with the synchronous rectifier circuit (20) by connecting first and second switch drivers (22,24) to the totem pole drivers (16,18). The first and second switch drivers (22,24) provides storage for circuit current which is fully discharged at the appropriate time to facilitate turning on and off the synchronous rectifiers (Q3,Q4).
Inventors:
Zhang, Jun
Heart, william
Heart, william
Application Number:
JP2001527424A
Publication Date:
January 26, 2011
Filing Date:
September 07, 2000
Export Citation:
Assignee:
ERICSSON INC.
International Classes:
H02M3/28; H02M7/21; H02M1/34; H02M3/335
Domestic Patent References:
| JP11178334A | ||||
| JP8223906A | ||||
| JP9084337A | ||||
| JP4004750A | ||||
| JP2000134920A | ||||
| JP2000324819A |
Foreign References:
| WO1999023747A1 | ||||
| US5742491 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura