Multi-resonant converter power supply
AssigneeCisco Technology, Inc.
InventorsDouglas Paul Arduini, Joel Richard Goergen, Sung Kee Baek
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Abstract
In one embodiment, an apparatus includes a first stage comprising a first active switch, a first resonant inductor, and a resonant capacitor and a second stage comprising a second active switch, a second resonant inductor, and a filter capacitor. The first and second stages form a non-isolated multi-resonant converter for converting a DC input voltage to a DC output voltage.
Claims20
An apparatus comprising:
- a first stage comprising a first active switch, a first resonant inductor, and a resonant capacitor;
- and
- a second stage comprising a second active switch, a second resonant inductor, and a filter capacitor;
- wherein said first and second stages form a non-isolated multi-resonant converter for converting a DC input voltage to a DC output voltage and the apparatus comprises an input isolation stage.
An apparatus comprising:
- a first stage comprising a first active switch, a first resonant inductor, and a resonant capacitor;
- and
- a second stage comprising a second active switch, a second resonant inductor, and a filter capacitor;
- wherein said first and second stages form a non-isolated multi-resonant converter for converting a DC input voltage to a DC output voltage and the apparatus comprises a power factor correction stage.
An apparatus comprising:
- a card for insertion into a network device, the card comprising a point-of-load power supply comprising:
- a first stage comprising a first switch, a first inductor, and a resonant capacitor;
- and
- a second stage comprising a second switch, a second inductor, and a filter capacitor;
- wherein said first stage comprises a power regulation resonant stage and said second stage comprises a voltage converter resonant stage to form a non-isolated multi-resonant converter and the apparatus comprises an input isolation stage.
The apparatus of 14 wherein the point-of-load power supply eliminates a need for an intermediate bus converter on the card.
A point-of-load power supply comprising:
- a first stage comprising a first active switch, a resonant inductor, and a resonant capacitor;
- and
- a second stage comprising a second active switch, a tapped resonant inductor, and a filter capacitor;
- wherein said first stage and said second stage form a non-isolated multi-resonant converter for converting a DC input voltage to a DC output voltage with a step-down voltage conversion or a step-up voltage conversion;
- and
- wherein the point-of-load power supply comprises a power factor correction stage.
Dependencies are inferred from the claim text.