公开(公告)号：US20180250505A1

公开(公告)日：2018-09-06

申请号：US15900831

申请日：2018-02-21

Applicant: Medtronic, Inc.

Inventor： Anthony W. SCHROCK ,  James W. BUSACKER ,  Kevin E. BAUMGART ,  Michael L. HUDZIAK ,  James D. REINKE ,  John D. WAHLSTRAND

IPC: A61N1/02 ,  A61N1/362 ,  A61N1/372 ,  A61N1/39

Abstract: In an example, an implantable medical device (IMD) includes a hold capacitor configured to deliver an electrical therapy pulse, and charge pump circuitry configured to transfer energy from the battery to the hold capacitor. In this example, the charge pump circuitry comprises a plurality of capacitors, and switching circuitry configured to put the charge pump circuitry into a K-factor mode selected from a group of K-factor modes by opening and closing a combination of switches connected to the plurality of capacitors.