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1. (WO2013119439) POWER ARCHITECTURE FOR AN IMPLANTABLE MEDICAL DEVICE HAVING A NON-RECHARGEABLE BATTERY

Pub. No.:    WO/2013/119439    International Application No.:    PCT/US2013/023890
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Thu Jan 31 00:59:59 CET 2013
IPC: A61N 1/378
A61N 1/37
Applicants: BOSTON SCIENTIFIC NEUROMODULATION CORPORATION
Inventors: LAMONT, Robert, G.
PARRAMON, Jordi
Title: POWER ARCHITECTURE FOR AN IMPLANTABLE MEDICAL DEVICE HAVING A NON-RECHARGEABLE BATTERY
Abstract:
An improved architecture for an implantable medical device using a primary battery is disclosed which reduces the circumstances in which the voltage of the primary battery is boosted, and hence reduces the power draw in the implant. The architecture includes a boost converter for selectively boosting the voltage of the primary battery and for supplying that boosted voltage to certain of the circuit blocks, including digital circuitry, analog circuitry, and memory. However, the boost converter is only used to boost the battery voltage when its magnitude is below a threshold; if above the threshold, the battery voltage is passed to the circuit blocks without boosting. Additionally, some circuitry capable of operation even at low battery voltages— including the telemetry tank circuitry and the compliance voltage generator— receives the battery voltage directly without boosting, and without regard to the current magnitude of the battery voltage.