Buck converter

Details Buck converter Buck converter

2007-12-25

2007-12-25

Vu, Bao Q. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

Reexamination Certificate

active

11256408

ABSTRACT:
A buck converter includes a first transistor, a second transistor, a filter circuit, a capacitor and a switch. The first transistor has a drain for receiving a first DC voltage, a gate for receiving a first control signal, and a source coupled to a node. The second transistor has a drain coupled to the node, a gate for receiving a second control signal, and a source coupled to a constant voltage. The filter circuit is electrically coupled to the node for outputting a second DC voltage. The switch has a first terminal electrically coupled to the gate of the second transistor via the capacitor, a second terminal electrically coupled to the source of the second transistor, and a control terminal for receiving the first control signal. The switch has a faster switching speed than the first transistor.

REFERENCES:
patent: 5731694 (1998-03-01), Wilcox et al.
patent: 6166528 (2000-12-01), Rossetti et al.
patent: 6246220 (2001-06-01), Isham et al.
patent: 6414469 (2002-07-01), Zhou et al.
patent: 6462963 (2002-10-01), Wittenbreder
patent: 6529536 (2003-03-01), Taguchi
patent: 6747442 (2004-06-01), Olsen et al.

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