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US 5,291,382 AGranted
Pulse width modulated DC/DC converter with reduced ripple current coponent stress and zero voltage switching capability
AssigneeLambda Electronics, Inc.
InventorIsaac Cohen
Life of this patent
Estimating the term…
Abstract
An improved DC to DC converter is provided in particular for converters with high power density requirements. The converter comprises an input voltage source and a capacitor connected in series to the voltage source. A switching transistor configuration connects the voltage source and the capacitor alternatively to the primary windings of a transformer. The secondary windings of the transformer are connected to a full-wave rectifier and a filter. The output voltage provided at the output of the filter is modulated by a controlling means.
Claims11
A DC to DC converter comprising:
- an input voltage source;
- a capacitance;
- an output circuit;
- a switching circuit for connecting said output circuit alternatively across said voltage source and said capacitance;
- said output circuit further comprising:
- a first inductor and a separate second inductor coupled in series to said switching circuit;
- a third inductor and a separate fourth inductor coupled in series and formed by isolation windings across said first and second, inductor said third and fourth inductors coupled to a first terminal of at least one rectifier at each end for full wave rectification, a second terminal of said rectifiers coupled to a common point, and a capacitance and a load terminal connected across an intermediate point of said third and fourth inductance and said common point.
4 more elements
A DC to DC converter comprising:
- an input circuit providing a bipolar voltage;
- an output circuit responsive to said bipolar voltage, said output circuit further comprising:
- a first inductor and a separate second inductor coupled in series to form the first and second terminals of said output circuit;
- a third inductor and a separate fourth inductor coupled in series and formed by isolation windings across said first and second inductors, said third and fourth inductors coupled to a first terminal of at least one rectifier at each end for full wave rectification, a second terminal of said rectifiers coupled to a common point, and a capacitance and a load terminal connected across an intermediate point of said third and fourth inductance and said common point.
1 more element
Dependencies are inferred from the claim text.