Title:
SWITCHING POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO2002065225
Kind Code:
A3
Abstract:
In a switching voltage power supply, a series regulator circuit interconnects an input voltage section (44) with an output voltage section (20B) of the switching power supply. The regulator circuit has an n-channel MOSFET transistor (Q1) serving as a regulator element. A gating circuit applies a gating voltage to the gate terminal relative to the drain terminal for establishing states of current conduction and current cut-off in the transistor. A biasing circuit interconnects the gating circuit with the drain terminal for establishing an offset potential of the gate terminal relative to the drain terminal during the state of current conduction, the offset potential counteracting a gate-to-source threshold voltage for reduction of a voltage drop between the drain terminal and the source terminal with a corresponding reduction in power dissipation of the regulator element.
Inventors:
GOFMAN IGOR Y
COLOMBO JOSEPH G
COLOMBO JOSEPH G
Application Number:
PCT/US2002/003972
Publication Date:
October 03, 2002
Filing Date:
February 06, 2002
Export Citation:
Assignee:
COLTENE WHALEDENT INC (US)
International Classes:
H02M3/155; H03K17/06; (IPC1-7): G05F1/40
Foreign References:
| US6061259A | 2000-05-09 |
Other References:
See also references of EP 1360559A4
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