Externally-driven scheme for synchronous rectification
US6188592A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A self-driven synchronous rectifier circuit (50) for a DC--DC power converter. The circuit comprises a primary transformer (16), a first synchronous rectifier (SQ1) coupled to the primary transformer (16), a second synchronous rectifier (SQ2) coupled to the primary transformer (16), an external drive circuit (18). The circuit (50) also comprises a plurality of switches (SQ3, SQ4) controllably coupled to second synchronous rectifier (SQ2). The external drive circuit (18) provides turn-off signaling for both synchronous rectifiers (SQ1, SQ2) Turn-on signaling provided for first synchronous rectifier (SQ1) by the primary transformer (16) turn-on signaling for second synchronous rectifier (SQ2) is provided by the external drive circuit (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.