Patent ID: 9238148
Filing Date: 2016-01-19
CPC Classification: A61M,A61N

Claim Text:
1. An implantable cardiac device comprising: a battery; a high power circuit for therapy delivery having an enabling input which determines whether the high power circuit is active or inactive; a control circuit that provides the enabling input to the high power circuit; and a buck-regulator based power supply having a buck oscillator and a resonant circuit controlled in a duty cycled manner by the buck oscillator, the resonant circuit including a maintaining capacitor for maintaining a reference voltage for use as an output from the buck regulator; the improvement comprising a shoot-through current and switch gate-charge re-capture circuit coupled to the buck oscillator, an internal ground of the medical device, the enabling input for the high power circuit, and the maintaining capacitor such that: when the enabling input is set to render the high power circuit active, the shoot through capture circuit directs a shoot-through current from the buck oscillator to ground; or when the enabling input is set to render the high power circuit inactive, the shoot through capture circuit directs the shoot-through current and switch gate-charge from the buck oscillator to the maintaining capacitor.