A self-regulated voltage/current-mode integrated power management with seamless mode transition and extended input-voltage range

Hesam Sadeghi Gougheri, Mehdi Kiani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An integrated power management (IPM) structure for inductive power delivery is presented with the capabilities of seamless transition between voltage and current mode operations, extended input-voltage range, self-regulation, and over-voltage protection (OVP) with only one off-chip capacitor. Unlike conventional IPMs, which discretely operate in either voltage mode (VM) or current mode (CM) for a limited range of the input voltage (i.e., with dead zone), the proposed IPM continuously employs both VM and CM and eliminates the input-range dead zone. The receiver (Rx) LC-tank is repeatedly shorted for several power carrier cycles to form a high-Q parallel Rx LC-tank and store energy. If the AC voltage across the Rx coil (Vp) surpasses the DC load voltage (Vl), the load capacitor (Cl) is automatically charged through an efficient half-wave rectifier operating in VM. Otherwise for Vp < Vl, at the end of each switching cycle the Rx resonance capacitor is opened at the time zero-crossing of Vp, when the maximum energy is stored in the Rx coil, to transfer the stored energy to Cl via CM operation. For self-regulation and OVP, reverse current from CL to the Rx LC-tank is employed. A proof-of-concept IPM was fabricated in a 0.35 μm 2P4M standard CMOS technology. In measurements, the IPM operated at 1 MHz and achieved a self-regulated Vl of 3 V for a wide range of Vp with OVP by switching the Rx LC-tank at its optimal frequency of 142 kHz and frequently employing reverse currents.

Original languageEnglish (US)
Title of host publication2018 IEEE Custom Integrated Circuits Conference, CICC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-3
Number of pages3
ISBN (Electronic)9781538624838
DOIs
StatePublished - May 9 2018
Event2018 IEEE Custom Integrated Circuits Conference, CICC 2018 - San Diego, United States
Duration: Apr 8 2018Apr 11 2018

Other

Other2018 IEEE Custom Integrated Circuits Conference, CICC 2018
CountryUnited States
CitySan Diego
Period4/8/184/11/18

Fingerprint

Electric potential
Overvoltage protection
Capacitors
Power management

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Gougheri, H. S., & Kiani, M. (2018). A self-regulated voltage/current-mode integrated power management with seamless mode transition and extended input-voltage range. In 2018 IEEE Custom Integrated Circuits Conference, CICC 2018 (pp. 1-3). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2018.8357022
Gougheri, Hesam Sadeghi ; Kiani, Mehdi. / A self-regulated voltage/current-mode integrated power management with seamless mode transition and extended input-voltage range. 2018 IEEE Custom Integrated Circuits Conference, CICC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1-3
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abstract = "An integrated power management (IPM) structure for inductive power delivery is presented with the capabilities of seamless transition between voltage and current mode operations, extended input-voltage range, self-regulation, and over-voltage protection (OVP) with only one off-chip capacitor. Unlike conventional IPMs, which discretely operate in either voltage mode (VM) or current mode (CM) for a limited range of the input voltage (i.e., with dead zone), the proposed IPM continuously employs both VM and CM and eliminates the input-range dead zone. The receiver (Rx) LC-tank is repeatedly shorted for several power carrier cycles to form a high-Q parallel Rx LC-tank and store energy. If the AC voltage across the Rx coil (Vp) surpasses the DC load voltage (Vl), the load capacitor (Cl) is automatically charged through an efficient half-wave rectifier operating in VM. Otherwise for Vp < Vl, at the end of each switching cycle the Rx resonance capacitor is opened at the time zero-crossing of Vp, when the maximum energy is stored in the Rx coil, to transfer the stored energy to Cl via CM operation. For self-regulation and OVP, reverse current from CL to the Rx LC-tank is employed. A proof-of-concept IPM was fabricated in a 0.35 μm 2P4M standard CMOS technology. In measurements, the IPM operated at 1 MHz and achieved a self-regulated Vl of 3 V for a wide range of Vp with OVP by switching the Rx LC-tank at its optimal frequency of 142 kHz and frequently employing reverse currents.",
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Gougheri, HS & Kiani, M 2018, A self-regulated voltage/current-mode integrated power management with seamless mode transition and extended input-voltage range. in 2018 IEEE Custom Integrated Circuits Conference, CICC 2018. Institute of Electrical and Electronics Engineers Inc., pp. 1-3, 2018 IEEE Custom Integrated Circuits Conference, CICC 2018, San Diego, United States, 4/8/18. https://doi.org/10.1109/CICC.2018.8357022

A self-regulated voltage/current-mode integrated power management with seamless mode transition and extended input-voltage range. / Gougheri, Hesam Sadeghi; Kiani, Mehdi.

2018 IEEE Custom Integrated Circuits Conference, CICC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 1-3.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - An integrated power management (IPM) structure for inductive power delivery is presented with the capabilities of seamless transition between voltage and current mode operations, extended input-voltage range, self-regulation, and over-voltage protection (OVP) with only one off-chip capacitor. Unlike conventional IPMs, which discretely operate in either voltage mode (VM) or current mode (CM) for a limited range of the input voltage (i.e., with dead zone), the proposed IPM continuously employs both VM and CM and eliminates the input-range dead zone. The receiver (Rx) LC-tank is repeatedly shorted for several power carrier cycles to form a high-Q parallel Rx LC-tank and store energy. If the AC voltage across the Rx coil (Vp) surpasses the DC load voltage (Vl), the load capacitor (Cl) is automatically charged through an efficient half-wave rectifier operating in VM. Otherwise for Vp < Vl, at the end of each switching cycle the Rx resonance capacitor is opened at the time zero-crossing of Vp, when the maximum energy is stored in the Rx coil, to transfer the stored energy to Cl via CM operation. For self-regulation and OVP, reverse current from CL to the Rx LC-tank is employed. A proof-of-concept IPM was fabricated in a 0.35 μm 2P4M standard CMOS technology. In measurements, the IPM operated at 1 MHz and achieved a self-regulated Vl of 3 V for a wide range of Vp with OVP by switching the Rx LC-tank at its optimal frequency of 142 kHz and frequently employing reverse currents.

AB - An integrated power management (IPM) structure for inductive power delivery is presented with the capabilities of seamless transition between voltage and current mode operations, extended input-voltage range, self-regulation, and over-voltage protection (OVP) with only one off-chip capacitor. Unlike conventional IPMs, which discretely operate in either voltage mode (VM) or current mode (CM) for a limited range of the input voltage (i.e., with dead zone), the proposed IPM continuously employs both VM and CM and eliminates the input-range dead zone. The receiver (Rx) LC-tank is repeatedly shorted for several power carrier cycles to form a high-Q parallel Rx LC-tank and store energy. If the AC voltage across the Rx coil (Vp) surpasses the DC load voltage (Vl), the load capacitor (Cl) is automatically charged through an efficient half-wave rectifier operating in VM. Otherwise for Vp < Vl, at the end of each switching cycle the Rx resonance capacitor is opened at the time zero-crossing of Vp, when the maximum energy is stored in the Rx coil, to transfer the stored energy to Cl via CM operation. For self-regulation and OVP, reverse current from CL to the Rx LC-tank is employed. A proof-of-concept IPM was fabricated in a 0.35 μm 2P4M standard CMOS technology. In measurements, the IPM operated at 1 MHz and achieved a self-regulated Vl of 3 V for a wide range of Vp with OVP by switching the Rx LC-tank at its optimal frequency of 142 kHz and frequently employing reverse currents.

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Gougheri HS, Kiani M. A self-regulated voltage/current-mode integrated power management with seamless mode transition and extended input-voltage range. In 2018 IEEE Custom Integrated Circuits Conference, CICC 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1-3 https://doi.org/10.1109/CICC.2018.8357022