Almarri, N;
Jiang, D;
Demosthenous, A;
(2021)
Design of a Power Management Circuit for an Opto-Electro Stimulator.
In:
2021 19th IEEE International New Circuits and Systems Conference (NEWCAS).
IEEE
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Abstract
This paper presents the design of an integrated power management circuit for use in an implantable opto-electro stimulator. It features an active rectifier with pulse width modulation (PWM) regulation to generate a 3.3 V regulated output, and a 3-stage high voltage charge pump (CP) that generates a 12 V output from a 3.3 V input with a 20 MHz, two-phase non-overlapping clock generator. The circuits were designed in a 0.18-µm CMOS technology requiring a chip area of 0.048 mm 2 . Simulation results show that the regulating rectifier has a voltage conversion efficiency of 94.3% and 92.8% with an ac input magnitude of 3.5 V and 3.6 V, respectively. The peak power transfer efficiency of the regulated 3.3V output voltage is 70.7% with a maximum output power of 30.3 mW. The CP with an overall on-chip capacitance is 60 pF.
| Type: | Proceedings paper |
|---|---|
| Title: | Design of a Power Management Circuit for an Opto-Electro Stimulator |
| Event: | 2021 19th IEEE International New Circuits and Systems Conference (NEWCAS) |
| Dates: | 13 June 2021 - 16 June 2021 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/NEWCAS50681.2021.9462777 |
| Publisher version: | https://doi.org/10.1109/NEWCAS50681.2021.9462777 |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10133247 |
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