Synchronous rectifier package for high-efficiency operation

Details Synchronous rectifier package for high-efficiency operation Synchronous rectifier package for high-efficiency operation

1992-09-21

1996-08-06

Wong, Peter S.

Electric power conversion systems

Current conversion

Integrated circuit

363127, 327434, 257368, H02M 721

Patent

active

055440380

ABSTRACT:
In a synchronous rectifier package, a Schottky diode is situated in parallel, i.e., with like polarity, with the body diode of a synchronous rectifier. The anode of the Schottky diode is connected directly to the source pad of the synchronous rectifier, and the cathode is directly connected to the drain pad. As a result, the synchronous rectifier package has minimal parasitic inductances and resistances, resulting in a highly efficient synchronous rectifier over a wide range of operating frequencies, even at high frequencies. More precise synchronization of gating signals to each individual cell of the synchronous rectifier is also achieved, further increasing rectification efficiency. The synchronous rectifier package is implemented in either a metallized ceramic structure, or a high-density interconnect structure.

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