Print Email Facebook Twitter A Single-Stage Regulating Voltage-Doubling Rectifier for Wireless Power Transfer Title A Single-Stage Regulating Voltage-Doubling Rectifier for Wireless Power Transfer Author Lu, T. (TU Delft Electronic Instrumentation) Du, S. (TU Delft Electronic Instrumentation) Date 2023 Abstract In this letter, a 6.78-MHz single-stage regulating voltage-doubling rectifier is presented for biomedical wireless power transfer (WPT) applications. Derived from a full-wave voltage doubler, a theoretical voltage conversion ratio (VCR) of 2 can be achieved, which benefits the end-to-end voltage gain of a biomedical WPT system with varying link conditions. As a result, a wider WPT operational range and less coil-link loss can be achieved. To avoid efficiency loss due to cascading, the rectifier output is in-situ regulated in a sub-50-mV hysteresis window by pulse-skipping control. To ensure a high power conversion efficiency (PCE), adaptive delay-compensated active diodes are adopted with an offset locking technique. The input/output capacitors of the rectifier are fabricated on-chip, achieving a fully integrated design. The rectifier was fabricated in a 180-nm BCD process, occupying a silicon area of 0.3/2.7 mm2 without/with on-chip capacitors. The measurements show that the rectifier can realize a peak PCE at 90.6% when the output power is 79.8 mW. The PCE and VCR are achieved higher than 86.4% and 1.6, respectively, over a large loading range (from 1 to 40 mA). The rectifier can output a maximum power of 159.2 mW, satisfying most biomedical implants. Subject adaptive delay compensationbiomedical implantsCoilsDelaysHysteresishysteresis output regulationRectifiersregulating rectifierSwitchesVideo recordingVoltage controlvoltage conversion ratiovoltage doublerWireless power transfer To reference this document use: http://resolver.tudelft.nl/uuid:02b740b6-3cfb-40c0-b36a-b2765258f673 DOI https://doi.org/10.1109/LSSC.2023.3239691 Embargo date 2023-07-01 ISSN 2573-9603 Source IEEE Solid State Circuits Letters, 6, 29-32 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 T. Lu, S. Du Files PDF A_Single_Stage_Regulating ... ansfer.pdf 1.69 MB Close viewer /islandora/object/uuid:02b740b6-3cfb-40c0-b36a-b2765258f673/datastream/OBJ/view