標題: Design of Multiple-Charge-Pump System for Implantable Biomedical Applications
作者: Lin, Shiau-Pin
Ker, Ming-Dou
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: high voltage generator;multiple charge pump;positive charge pump;negative charge pump;power efficiency
公開日期: 1-Jan-2018
摘要: Circuit design to implement a multiple-charge-pump (MCP) system in a low-voltage standard CMOS process is proposed, that can successfully support the desired power sources for implantable monopolar biphasic stimulator. A negative charge pump (CP) circuit with the four-phase cross-couple structure is introduced to suppress return-back leakage, and thus its power efficiency is improved. This MCP system provides the stimulator with three power sources of +9V, -9V, and -2.7V, simultaneously. Closed-loop operation helps for regulating the output voltage sources (+9V and -9V) with a maximum loading current of 5.5mA for stimulus drivers, and 1-mA current for the control circuits of the stimulator. The proposed MCP system has been fabricated in a 0.18-mu m 1.8V/3.3-V CMOS process, as well as successfully verified in in-vivo animal tests with stimulator together.
URI: http://hdl.handle.net/11536/151052
ISSN: 2163-4025
期刊: 2018 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS): ADVANCED SYSTEMS FOR ENHANCING HUMAN HEALTH
起始頁: 391
結束頁: 394
Appears in Collections:Conferences Paper