High precision switching regulator circuit

Details High precision switching regulator circuit High precision switching regulator circuit

1994-12-13

1996-12-24

Sterrett, Jeffrey L.

Electricity: power supply or regulation systems

Output level responsive

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

G05F 1575

Patent

active

055876501

ABSTRACT:
A switching regulator circuit. The switching regulator circuit comprises a primary feedback loop and a secondary feedback connection. The primary feedback loop comprises a drive circuit, a switching transistor, an output stage, a voltage divider circuit, and a pre-drive circuit that are coupled in series. The pre-drive circuit is coupled to the drive circuit to close the primary feedback loop. The primary feedback loop uses negative feedback to output a predetermined output voltage. The secondary feedback connection is coupled between an input and an output of the pre-drive circuit. The secondary feedback connection uses regenerative feedback to provide hysteresis such that the primary feedback loop oscillates. The switching regulator circuit thus regulates the output voltage without requiring a separate oscillator circuit.

REFERENCES:
patent: 4719552 (1988-01-01), Albach et al.
patent: 4791350 (1988-12-01), Roof
patent: 4967138 (1990-10-01), Obergfell et al.
patent: 5214561 (1993-05-01), Morita
patent: 5399958 (1995-03-01), Iyoda
patent: 5408173 (1995-04-01), Knapp
patent: 5430364 (1995-07-01), Gibson

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