Recent advances in power efficient output stage for high density implantable stimulators

A major drawback of a current-controlled stimulation is its power efficiency. However, it is commonly used in implantable stimulators due to its safety. The power efficiency of a current-controlled stimulation can be improved by reducing the headroom voltage needed in the current driver. A promising...

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Bibliographic Details
Main Authors: Sooksood, K., Noorsal, E., Bihr, U., Ortmanns, M.
Format: Conference Proceeding
Language:English
Subjects:
Electrodes
Impedance
Mirrors
Monitoring
Power demand
Transistors
Voltage control
Citations: Items that cite this one
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Summary:A major drawback of a current-controlled stimulation is its power efficiency. However, it is commonly used in implantable stimulators due to its safety. The power efficiency of a current-controlled stimulation can be improved by reducing the headroom voltage needed in the current driver. 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 which is used for the supply voltage adaptation. This paper presents an overview on recent power efficient high voltage-compliance output drivers.
ISSN:1094-687X
1558-4615
2694-0604
DOI:10.1109/EMBC.2012.6346066