Circuits and methods for developing a regulated auxiliary output

Details Circuits and methods for developing a regulated auxiliary output Circuits and methods for developing a regulated auxiliary output

1999-09-14

2000-07-11

Tso, Edward H.

Electricity: power supply or regulation systems

Output level responsive

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

323266, 323267, G05F 140

Patent

active

060878177

ABSTRACT:
Circuits and methods for regulating an auxiliary output with an over-winding on a synchronous buck regulator are provided. Though these regulators have produced regulated auxiliary outputs in conventional circuits, the regulation used in conventional circuits has not been maximized. This caused the auxiliary output voltage to vary with changes in load on the primary output as well as with changes in load on the auxiliary output. The present invention directly regulates the auxiliary output voltage of the synchronous buck regulator by adjusting the gate amplitude of a MOSFET switch located in the power loop of the auxiliary output.

REFERENCES:
patent: 5552695 (1996-09-01), Schwartz
patent: 5677619 (1997-10-01), Doluca
patent: 5886508 (1999-03-01), Jutras

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