Battery Charger Circuit for Battery Powered Implantable Neurostimulation Systems

摘要

An implantable device includes a stimulation electronic circuit, a battery, a receiver configured to receive energy from a source external to the implantable stimulation device, and a battery charger circuit configured to use the energy to charge the battery and power the stimulation electronic circuit, the battery charger circuit including a load switch for connecting/disconnecting the battery, the load switch being controlled by the stimulation electronic circuit.

主权项

1. An implantable device, comprising:
a battery having a battery voltage; a receiver configured to receive energy from a source external to the implantable device and to produce a DC voltage; a regulator for receiving the DC voltage and configured to produce an output voltage from the DC voltage at a node, wherein the node is configured to power a load in the implantable device; a charging circuit for receiving the DC voltage and configured to charge the battery using the DC voltage; and a switch configured to receive the battery voltage at a first terminal, and coupled to the node at a second terminal, wherein the switch is controllable to couple the battery voltage to the node.