Abstract
A neural stimulation system-on-chip (SoC) plays an essential role to modulate neural activities, while requiring effective schemes to inject a desired amount of charge efficiently and safely without risk of tissue damage. Compared to the voltage or current controlled stimulation, switched-capacitor stimulation (SCS) is power efficient and ensures safe charge transfer [1], [2]. However, conventional SCS is limited to provide high-voltage (HV) compliance for various types of electrodes and disease treatments [1], [2]. HV tolerant stimulators using lowvoltage (LV) transistors still need high supply voltages to inject stimuli which is power inefficient [3], [4], so more efficient HV tolerant charge transfer scheme is highly desired. In addition, charge balancing (CB) should be preserved in HV stimulation. Among active CB schemes, pulse insertion needs additional periods after stimulation which may induce unwanted effects, and offset control suffers from slow settling time to suppress residual voltages [5], [6]. For efficient and safe HV stimulation, we presents a HV tolerant stacked-switched-capacitor stimulation (SSCS) system with rapid stimulus-synchronized CB.
Original language | English |
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Title of host publication | 2023 IEEE Custom Integrated Circuits Conference, CICC 2023 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9798350399486 |
DOIs | |
Publication status | Published - 2023 |
Event | 44th Annual IEEE Custom Integrated Circuits Conference, CICC 2023 - San Antonio, United States Duration: 2023 Apr 23 → 2023 Apr 26 |
Publication series
Name | Proceedings of the Custom Integrated Circuits Conference |
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Volume | 2023-April |
ISSN (Print) | 0886-5930 |
Conference
Conference | 44th Annual IEEE Custom Integrated Circuits Conference, CICC 2023 |
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Country/Territory | United States |
City | San Antonio |
Period | 23/4/23 → 23/4/26 |
Bibliographical note
Funding Information:This work was supported by Ministry of Health & Welfare (HR21C0885) and Ministry of Trade, Industry & Energy (RS-2022-00154983), Korea. Chip fabrication was supported by IC Design Education Center, Korea.
Publisher Copyright:
© 2023 IEEE.
ASJC Scopus subject areas
- Electrical and Electronic Engineering