Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1997-07-31
1999-01-05
Nguyen, Matthew V.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
363 21, G05F 110, H02M 3335
Patent
active
058567399
ABSTRACT:
A DC to DC converter power supply for converting a varying unregulated DC voltage into a lower voltage regulated output. The DC to DC converter has a buck topology and includes a high frequency switch with a variable duty cycle, a regulating filter, a current inner control loop, a voltage outer control loop, a latching switch that provides a load bypass during startup, a logic circuit oscillator that controls the high frequency switch frequency duty cycle as a function of both the inner control loop current and the outer control loop voltage, and a circuit that taps the source voltage for a power input to the logic circuit oscillator during startup. The DC to DC converter admits a source voltage range of approximately 4:1 and provides a regulated fixed output voltage that ranges from approximately 30% of the source voltage at the lowest accommodated source voltage to approximately 5% of the source voltage at the highest accommodated source voltage.
REFERENCES:
patent: 4530043 (1985-07-01), Palm et al.
patent: 5418709 (1995-05-01), Lukemire
patent: 5565761 (1996-10-01), Hwang
patent: 5659241 (1997-08-01), Horiuchi et al.
Nguyen Matthew V.
Spartec International Corp.
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