Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1994-02-08
1995-08-29
Dougherty, Thomas M.
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
G05F 110
Patent
active
054463661
ABSTRACT:
A boost converter power supply circuit uses energy from a diode recovery current which flows in the blocking diode at diode commutation to discharge a capacitance associated with the main switch of the boost converter in order to achieve zero voltage switching. The diode recovery current energy is initially captured in an inductor, is then transferred to a capacitor, and is then transferred back to the inductor prior to the main switch being switched on. In accordance with another embodiment, a control circuit for controlling a boost converter to achieve power factor correction is disclosed which does not use a high gain input current feedback loop. The control circuit responds relatively quickly to output load changes, thereby overcoming disadvantages of prior art control circuits. Because the control circuit does not require an X-Y multiplier, the control circuit lends itself to realization in integrated circuit form. The boost converter can be practiced without the control circuit, the control circuit can be practiced without the boost converter, and the control circuit can be used to control the boost converter.
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Bassett John A.
Odell Arthur B.
Computer Products Inc.
Dougherty Thomas M.
Leeds Kenneth E.
To E.
Wallace T. Lester
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