An Implantable Bipolar Active Charge Balancing Circuit with Six Adjustment Current levels for Facial Paralysis Patients

Moganti, Ganesh Lakshmana Kumar and Praneeth, V N Siva and Vanjari, Siva Rama Krishna (2021) An Implantable Bipolar Active Charge Balancing Circuit with Six Adjustment Current levels for Facial Paralysis Patients. In: 11th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, IDAACS 2021, 22 September 2021 through 25 September 2021, Cracow.

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Neural stimulation is a robust technique with fewer side effects that are used to cure several neurological diseases. The major issue in this neural stimulator is charge imbalances, caused due to device irregularities during fabrication. Generally, active charge balancing performs an almost accurate charge balance. However, the main disadvantages of these techniques are the additional power consumption for charge balancing, it only balances monopolar residual charge and uses fixed adjustment current with fixed or variable time. In this proposal, a novel implantable bipolar active charge balance circuit with a 6-level of adjustment currents is proposed. This circuit has the unique capability of separating the residual voltage into six levels, which covers the positive and negative residual voltage. By using this residual voltage partition, if the residual voltage crosses the safety limits (either positive or negative), it is balanced with equivalent opposite current without unnecessary charge accumulation. The proposed calibration circuit is designed on CMOS 180nm technology and consumes around 26μW. It also maintains the power ratio of the calibration circuit to the stimulation circuit between 1 and 1.8 percent. © 2021 IEEE.

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IITH Creators:
IITH CreatorsORCiD
Vanjari, Siva Rama Krishna
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: 'current; Active charge balance; Bi-phasic waveform; Charge balances; Electrical current; Electrical stimulator and current stimulation circuit; Electrical stimulators; Residual voltage; Stimulation circuits; Waveforms
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 04 Aug 2022 10:25
Last Modified: 04 Aug 2022 10:25
Publisher URL:
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