Switching power circuit with redundant structure

Details Switching power circuit with redundant structure Switching power circuit with redundant structure

1994-08-30

1995-08-08

Stephan, Steven L.

Electricity: power supply or regulation systems

Output level responsive

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

323272, H02M 3335

Patent

active

054402239

ABSTRACT:
A switching power circuit with a redundant structure comprises a back-current obstructing element provided at an output side of the switching power circuit, error amplifiers provided at an output side (the load side) and internal side (the switching power circuit side) of the back-current obstructing element, respectively, to control both the voltages at the output side and inside of the back-current obstructing element, a field effect transistor used as the back-current obstructing element so that a source electrode and a drain electrode are connected in a forward direction with respect to an output current, and a voltage detecting circuit for detecting an output voltage of the error amplifier for inside of the switching circuit to produce an output signal on the basis of which a gate voltage of the field effect transistor is controlled.

REFERENCES:
patent: 4679130 (1987-07-01), Moscovici
patent: 4772995 (1988-09-01), Gautherin et al.
patent: 5122726 (1992-06-01), Elliott et al.

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