TRANSFORMER-BASED CHARGING CIRCUITS FOR IMPLANTABLE MEDICAL DEVICES

摘要

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.

主权项

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.