@inproceedings{383a77b5dce94361948beb61260f5d20,
title = "High voltage integrated chip power recovering topology for implantable wireless biomedical devices",
abstract = "In near field wireless power links for biomedical implants, inductive voltage at receiver end (Rx) largely exceeds the compliance of low voltage integrated power recovery circuits. To limit the magnitude of induced signal, most of the low voltage (LV) integrated power recovery schemes employ methods like voltage clipping and shunt regulation. These methods are proved to be power inefficient. Therefore, to overcome the voltage limitation and to improve the power efficiency, we propose an on-chip high-voltage (HV) power recovery scheme based on step-down approach, which allows supply voltage as high as 30V The proposed design comprises of enhanced semi-active HV bridge rectifier, reference voltage generator and HV series voltage regulator. In addition, a battery management circuit that ensures safe and reliable charging of the implant battery is proposed and implemented. The proposed design is fabricated with 0.35μm HV BCD technology based on LOCOS 0.35μm CMOS process. Rectifier and regulator power efficacy are analyzed and compared through simulation and measurement results.",
keywords = "Biomedical implant, Charging control circuit, Cuff-nerve electrode interface, High voltage integrated chip, Linear voltage regulator, Power efficiency, Power recovery, Rectifier",
author = "Nair, \{Vijith Vijayakumaran\} and Jinhwan Youn and Choi, \{Jun Rim\}",
year = "2015",
doi = "10.5220/0005194000130022",
language = "English",
series = "BIODEVICES 2015 - 8th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 8th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2015",
publisher = "SciTePress",
pages = "13--22",
editor = "Alberto Cliquet and Alberto Cliquet and Ana Fred and Hugo Gamboa and Dirk Elias",
booktitle = "BIODEVICES 2015 - 8th International Conference on Biomedical Electronics and Devices, Proceedings; Part of 8th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2015",
note = "8th International Conference on Biomedical Electronics and Devices, BIODEVICES 2015 ; Conference date: 12-01-2015 Through 15-01-2015",
}