DC-DC converter

Details DC-DC converter DC-DC converter

2008-06-24

2008-06-24

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S284000

Reexamination Certificate

active

07391199

ABSTRACT:
In a DC-DC converter conforming to the current mode control system, in which the valley value of an inductor current is controlled for output control, a current detection circuit6is configured to detect the current flowing from a low-side FET2to an inductor3using an FET60, an NPN transistor61, an NPN transistor62, a PNP transistor64, a PNP transistor65and a resistor66, to detect the current flowing from the inductor3to the low-side FET2using an FET67, a differential amplifier68, an FET69and the resistor66, and to output a current detection signal Vc.

REFERENCES:
patent: 6307356 (2001-10-01), Dwelley
patent: 6476589 (2002-11-01), Umminger et al.
patent: 6541947 (2003-04-01), Dittmer et al.
patent: 7061218 (2006-06-01), Ito
patent: 7250746 (2007-07-01), Oswald et al.
patent: 2001-136737 (2001-05-01), None
patent: WO-00/79682 (2000-12-01), None

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