Power converter

Details Power converter Power converter

2007-12-04

2007-12-04

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

Reexamination Certificate

active

10534276

ABSTRACT:
A power converter comprises an inductor (L) and a main switch (M1) having a main current path, the inductor (L) and the main current path are arranged in series to receive a DC-input voltage (VIN). A control circuit (CC) controls on-periods (Ton) and/or off-periods (Toff) of the main switch (M1) to stabilize an output voltage (VO) supplied to a load (LO). The control circuit (CC) further has an input (IN) to receive a measuring signal (MS) to protect the main switch (M1) against situations of overvoltage. A measuring circuit (MC) is coupled to a junction (J1) of the inductor (L) and the main current path to obtain the measuring signal (MS) which is indicative of a voltage across the main current path. Preferably, the measuring circuit (MC) comprises a peak-clamp.

REFERENCES:
patent: 4559591 (1985-12-01), Grunsch
patent: 4939632 (1990-07-01), Plagge et al.
patent: 4996638 (1991-02-01), Orr
patent: 5103386 (1992-04-01), Herrmann
patent: 6016260 (2000-01-01), Heeringa
patent: 6191959 (2001-02-01), Miermans

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