Output feedback and under-voltage detection

Details Output feedback and under-voltage detection Output feedback and under-voltage detection

1998-11-16

2000-11-14

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

With starting arrangement

363 50, 323315, H02H 710

Patent

active

061478830

ABSTRACT:
A switched mode controller for properly handling an under-voltage condition in a power line which includes a current mirror for receiving current from the power line; a reference current source coupled to the current mirror for supplying a reference current; and a power transistor coupled to the reference current source, the power transistor generating a pulse width modulated signal when current from the power line exceeds the reference current, the power transistor being disabled when current from the power line is less than the reference current.

REFERENCES:
patent: 5264782 (1993-11-01), Newton
patent: 5510699 (1996-04-01), Theus et al.
patent: 5698970 (1997-12-01), Stanojevic
patent: 5747978 (1998-05-01), Gariboldi et al.
patent: 5798635 (1998-08-01), Hwang et al.
Ashok Bindra, "Power-Conversion Chip Cuts Energy Wastage in Off-Line Switchers," Electronic Design, pp. 46,48, Oct. 1998.

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