Switched mode power supply with transformer and feedback via pri

Details Switched mode power supply with transformer and feedback via pri Switched mode power supply with transformer and feedback via pri

1996-09-30

1998-05-26

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 97, 363131, H02M 3335, H02M 7537, H02P 1318

Patent

active

057576254

ABSTRACT:
A switched-mode power supply which uses the primary winding of the isolation transformer as the feedback mechanism for the regulation of the secondary voltage or current. The primary winding voltage and current are used to control the sampling of the primary winding to obtain a measurement signal which is proportional to the secondary voltage or current, and this measurement signal is used to control the switched drive signal. By using the primary winding as the feedback winding, parts can be saved, and the transformer can be of simpler construction.

REFERENCES:
patent: 4425611 (1984-01-01), Easter
patent: 4682081 (1987-07-01), Sikora
patent: 4739462 (1988-04-01), Farnsworth et al.
patent: 4800323 (1989-01-01), Sikora
patent: 5060131 (1991-10-01), Sikora
patent: 5138543 (1992-08-01), Harm et al.
patent: 5448469 (1995-09-01), Rilly et al.
"Linear Technology", LT1103/LT1105, Offline Switching Regulator, pp. 211-237.

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