Input stage circuit of three-level DC/DC converter

Details Input stage circuit of three-level DC/DC converter Input stage circuit of three-level DC/DC converter

2006-06-13

2006-06-13

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S025000, C363S134000

Reexamination Certificate

active

07061777

ABSTRACT:
An input stage circuit of a three-level DC/DC converter is provided. The input stage circuit uses metal-oxide-semiconductor field effect transistors (MOSFETs) to discharge a flying capacitor to maintain the voltage across the flying capacitor at a half of the input voltage. Not only can the input stage circuit solve the high voltage issue across the flying capacitor in the prior art, but the circuit is able to operate normally without increasing power consumption during discharging, thereby avoiding problems of the prior art.

REFERENCES:
patent: 4860184 (1989-08-01), Tabisz et al.
patent: 5808879 (1998-09-01), Liu et al.
patent: 6349044 (2002-02-01), Canales-Abarca et al.
patent: 6353547 (2002-03-01), Jang et al.
patent: 6487092 (2002-11-01), Nishikawa

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