Power efficient output stages for high density implantable stimulators - Review and outlook

Sooksood, Kriangkrai; Ortmanns, Maurits

doi:10.1109/ECTICon.2012.6254258

Power efficient output stages for high density implantable stimulators - Review and outlook

Author(s)

Sooksood, Kriangkrai

Ortmanns, Maurits

Date Issued

October 2, 2012

Type

Conference Paper

DOI

10.1109/ECTICon.2012.6254258

Abstract

In implantable stimulators, a current-controlled stimulation is preferred over a voltage-controlled due to its safety. However, the power efficiency is a major disadvantage. By reducing the headroom voltage needed in the current driver, power efficiency of a constant current stimulation is improved. A promising technique is to bias the transistor in triode region whereas improving output impedance through the regulated cascode structure. This comes with a feature of implicit compliance monitor. This paper presents an overview on recent highly compliance output drivers and proposes a new power efficient high compliance output stage. © 2012 IEEE.

Citation

2012 9th International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2012, 2012