Title
Design of Multiple-Charge-Pump System for Implantable Biomedical Applications
Abstract
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-μm 1.8-V /3.3-V CMOS process, as well as successfully verified in in-vivo animal tests with stimulator together.
Year
DOI
Venue
2018
10.1109/BIOCAS.2018.8584758
2018 IEEE Biomedical Circuits and Systems Conference (BioCAS)
Keywords
Field
DocType
high voltage generator,multiple charge pump,positive charge pump,negative charge pump,power efficiency
Electrical efficiency,Capacitor,Leakage (electronics),Computer science,Voltage source,Circuit design,Electronic engineering,Charge pump,Electronic circuit,Transistor
Conference
ISSN
ISBN
Citations 
2163-4025
978-1-5386-3604-6
1
PageRank 
References 
Authors
0.36
0
2
Name
Order
Citations
PageRank
Shiau-Pin Lin110.70
Ming-Dou Ker2445125.33