Multi-element resonant converters
AssigneeVirginia Tech Intellectual Properties, Inc.
InventorsDianbo Fu, Fred C. Lee, Ya Liu, Ming Xu
Life of this patent
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Abstract
A resonant switched power converter having switching frequency controlled in response to an output voltage thereof achieves over-current protection such as at start-up or under short circuit conditions using a resonant tank circuit which provides a notch filter in addition to a band pass filter. A additional band pass filter provided in the resonant tank circuit achieves increased power transfer to a load and reduced circulating resonant currents and conduction losses. The inductances of the preferred LCLCL tank circuit or other tank circuit with two pass band filters and a notch filter may be integrated into a single electrical component.
Claims20
A multi-element DC/DC power converter comprising
- a switched power input circuit and
- a resonant tank circuit comprising at least four elements, said resonant tank circuit providing
- a band pass filter resonant at a first frequency, and
- a notch filter resonant at a second frequency higher than said first frequency.
A multi-element DC/DC power converter comprising
- a tank circuit providing a band pass filter and a notch filter,
- a primary side input structure for supplying power to said tank circuit at a switching frequency controlled in accordance with an output voltage of said power converter, and
- a secondary side output circuit for supplying power to a load from said tank circuit.
Dependencies are inferred from the claim text.