Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer
A power management unit (PMU) is an essential block for diversified multi-functional low-power Internet of Things (IoT) and biomedical electronics. This paper includes a theoretical analysis of a high current, single-stage ac-dc, reconfigurable, dual output, regulating rectifier consisting of pulse...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Journal of Low Power Electronics and Applications |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-9268/13/1/20 |
| _version_ | 1797610913760542720 |
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| author | Noora Almarri Peter Langlois Dai Jiang Andreas Demosthenous |
| author_facet | Noora Almarri Peter Langlois Dai Jiang Andreas Demosthenous |
| author_sort | Noora Almarri |
| collection | DOAJ |
| description | A power management unit (PMU) is an essential block for diversified multi-functional low-power Internet of Things (IoT) and biomedical electronics. This paper includes a theoretical analysis of a high current, single-stage ac-dc, reconfigurable, dual output, regulating rectifier consisting of pulse width modulation (PWM) and pulse frequency modulation (PFM). The regulating rectifier provides two independently regulated supply voltages of 1.8 V and 3.3 V from an input ac voltage. The PFM control feedback consists of feedback-driven regulation to adjust the driving frequency of the power transistors through adaptive buffers in the active rectifier. The PWM/PFM mode control provides a feedback loop to adjust the conduction duration accurately and minimize power losses. The design also includes an adiabatic charge pump (CP) to provide a higher voltage level. The adiabatic CP consists of latch-up and power-saving topologies to enhance its power efficiency. Simulation results show that the dual regulating rectifier has 94.3% voltage conversion efficiency with an ac input magnitude of 3.5 Vp. The power conversion efficiency of the regulated 3.3 V output voltage is 82.3%. The adiabatic CP has an overall voltage conversion efficiency (VCE) of 92.9% with a total on-chip capacitance of 60 pF. The circuit was designed using 180 nm CMOS technology. |
| first_indexed | 2024-03-11T06:21:36Z |
| format | Article |
| id | doaj.art-e56b1b48b1e545e8a817f4223f71ec1e |
| institution | Directory Open Access Journal |
| issn | 2079-9268 |
| language | English |
| last_indexed | 2024-03-11T06:21:36Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Low Power Electronics and Applications |
| spelling | doaj.art-e56b1b48b1e545e8a817f4223f71ec1e2023-11-17T11:55:53ZengMDPI AGJournal of Low Power Electronics and Applications2079-92682023-03-011312010.3390/jlpea13010020Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power TransferNoora Almarri0Peter Langlois1Dai Jiang2Andreas Demosthenous3Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UKDepartment of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UKDepartment of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UKDepartment of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UKA power management unit (PMU) is an essential block for diversified multi-functional low-power Internet of Things (IoT) and biomedical electronics. This paper includes a theoretical analysis of a high current, single-stage ac-dc, reconfigurable, dual output, regulating rectifier consisting of pulse width modulation (PWM) and pulse frequency modulation (PFM). The regulating rectifier provides two independently regulated supply voltages of 1.8 V and 3.3 V from an input ac voltage. The PFM control feedback consists of feedback-driven regulation to adjust the driving frequency of the power transistors through adaptive buffers in the active rectifier. The PWM/PFM mode control provides a feedback loop to adjust the conduction duration accurately and minimize power losses. The design also includes an adiabatic charge pump (CP) to provide a higher voltage level. The adiabatic CP consists of latch-up and power-saving topologies to enhance its power efficiency. Simulation results show that the dual regulating rectifier has 94.3% voltage conversion efficiency with an ac input magnitude of 3.5 Vp. The power conversion efficiency of the regulated 3.3 V output voltage is 82.3%. The adiabatic CP has an overall voltage conversion efficiency (VCE) of 92.9% with a total on-chip capacitance of 60 pF. The circuit was designed using 180 nm CMOS technology.https://www.mdpi.com/2079-9268/13/1/20active rectifieradiabatic charge pumpbiomedical implantdual output designinductive wireless power transferpulse frequency modulation |
| spellingShingle | Noora Almarri Peter Langlois Dai Jiang Andreas Demosthenous Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer Journal of Low Power Electronics and Applications active rectifier adiabatic charge pump biomedical implant dual output design inductive wireless power transfer pulse frequency modulation |
| title | Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer |
| title_full | Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer |
| title_fullStr | Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer |
| title_full_unstemmed | Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer |
| title_short | Efficient Dual Output Regulating Rectifier and Adiabatic Charge Pump for Biomedical Applications Employing Wireless Power Transfer |
| title_sort | efficient dual output regulating rectifier and adiabatic charge pump for biomedical applications employing wireless power transfer |
| topic | active rectifier adiabatic charge pump biomedical implant dual output design inductive wireless power transfer pulse frequency modulation |
| url | https://www.mdpi.com/2079-9268/13/1/20 |
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