Current driven synchronous rectifier with energy recovery

Details Current driven synchronous rectifier with energy recovery Current driven synchronous rectifier with energy recovery

1999-03-12

2000-10-17

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 18, 363 19, 363 21, H02M 7217, H02M 3335

Patent

active

061341312

ABSTRACT:
A synchronous rectifier is disclosed which makes use of current driving technique to enable low conduction loss in converter rectifiers. In addition to a low loss switch the present invention comprises essentially a transformer with a plurality of windings with at least one current sensing winding, one driver winding which provides driving signal for the synchronous rectifier, and windings for energy recovery. This synchronous rectifier is self-driven but operates independent of converter input voltage hence allow wide input voltage range. It also avoids effect of leakage inductance in converter transformer windings. With energy recovery means it can operate with high efficiency. This synchronous rectifier can operate in many different circuit topologies.

REFERENCES:
patent: 3757195 (1973-09-01), Sklaroof
patent: 3940682 (1976-02-01), Park et al.
patent: 4882646 (1989-11-01), Genuit

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