A 13.56 MHz pulse-width modulation active rectifier for implantable medical devices

Fu Bin Yang, Sheng Kai Hsieh, Po-Hung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper, a 13.56 MHz regulated dual-output active rectifier is proposed for implantable medical devices (IMDs). By adopting the pulse-width modulation (PWM) to control the conduction time of the rectifying switches, the proposed active rectifier is able to realize the rectification and regulation of dual-output voltages without adding DC-DC converters. The proposed automatic digital offset compensation (ADOC) can automatically compensate both turn-on and turn-off delay to maximize the conversion power and minimize the reverse current. Dual-output voltages 1.8 V and 3.3 V are generated to supply the internal circuit in IMDs. The simulated maximum power conversion efficiency (PCE) is 78.5%, and the input operating voltage ranges from 3.6 V to 5 V. Comparing to the conventional constant offset calibration, the efficiency improvement of 8% is obtained.

Original languageEnglish
Title of host publicationWPTC 2017 - Wireless Power Transfer Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509045853
DOIs
StatePublished - 19 Jun 2017
Event2017 Wireless Power Transfer Conference, WPTC 2017 - Taipei, Taiwan
Duration: 10 May 201712 May 2017

Publication series

NameWPTC 2017 - Wireless Power Transfer Conference

Conference

Conference2017 Wireless Power Transfer Conference, WPTC 2017
CountryTaiwan
CityTaipei
Period10/05/1712/05/17

Keywords

  • Active rectifier
  • Automatic digital offset compensation
  • Implantable medical devices
  • Pulse width modulation
  • Resonant coupling
  • Wireless power transfer

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