DC-DC converter

Details DC-DC converter DC-DC converter

2009-08-19

2010-06-08

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S284000, C323S349000

Reexamination Certificate

active

07733068

ABSTRACT:
A DC-DC converter includes a switching transistor connected to an inductor and a power input terminal, with the inductor connected to an output terminal, a synchronous rectification transistor connected to a junction node therebetween, a first electric current detector to detect whether or not an electric current flowing through the synchronous rectification transistor is larger than a first electric current, a second electric current detector to detect whether or not the electric current flowing through the synchronous rectification transistor is larger than a second electric current that is larger than the first electric current, and a selection mechanism to select one of the first and second electric current detectors in accordance with a control signal. The synchronous rectification transistor is turned off by outputting an output signal the selected current detector.

REFERENCES:
patent: 2007/0176588 (2007-08-01), Nishida
patent: 2007/0222502 (2007-09-01), Noda
patent: 2009/0066305 (2009-03-01), Noda
patent: 2009/0115374 (2009-05-01), Noda
patent: 2004-56982 (2004-02-01), None
patent: 2005-160224 (2005-06-01), None
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patent: 2007-116878 (2007-05-01), None
patent: 2008-199804 (2008-08-01), None
patent: 2009-71920 (2009-04-01), None
patent: 2009-130972 (2009-06-01), None
patent: WO 2007/094246 (2007-08-01), None

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