Transformer-based charging circuits for implantable medical devices
First Claim
1. An implantable medical device, comprising:
- a power source;
a plurality of primary windings selectively coupled to the power source;
a plurality of secondary windings magnetically coupled to the plurality of primary windings to define a transformer, wherein each one of the plurality of secondary windings is interlaced to the others of the plurality of secondary windings along a length defined by the plurality of secondary windings; and
a capacitor array coupled to the plurality of secondary transformer windings, wherein each capacitor in the capacitor array is coupled to an individual one of the plurality of secondary transformer windings.
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Abstract
An implantable medical device includes a low-power circuit, a high-power circuit, and a dual-cell power source. The power source is coupled to a transformer having first and second primary windings, each of which is selectively coupled to the power source and a plurality of secondary windings that are magnetically coupled to the first and second primary windings. The plurality of secondary windings are interlaced along a length of each of the secondary windings. Each of the plurality of secondary transformer windings is coupled to a capacitor, and the capacitors are all connected in a series configuration. The low power circuit is coupled to the power source and issues a control signal to control the delivery of charge from the power source to the plurality of capacitors through the first and second transformers.
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Citations
21 Claims
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1. An implantable medical device, comprising:
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a power source; a plurality of primary windings selectively coupled to the power source; a plurality of secondary windings magnetically coupled to the plurality of primary windings to define a transformer, wherein each one of the plurality of secondary windings is interlaced to the others of the plurality of secondary windings along a length defined by the plurality of secondary windings; and a capacitor array coupled to the plurality of secondary transformer windings, wherein each capacitor in the capacitor array is coupled to an individual one of the plurality of secondary transformer windings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification