TY - JOUR
T1 - An inductive voltage-/current-mode integrated power management with seamless mode transition and energy recycling
AU - Gougheri, Hesam Sadeghi
AU - Kiani, Mehdi
N1 - Funding Information:
Manuscript received May 22, 2018; revised September 29, 2018; accepted November 22, 2018. Date of publication December 18, 2018; date of current version February 21, 2019. This work was supported by the National Institutes of Health under Grant NIBIB-1U18EB021789-01. This paper was approved by Guest Editor Wing-Hung Ki. (Corresponding author: Mehdi Kiani.) The authors are with the Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802 USA ( e-mail: [email protected]).
Publisher Copyright:
© 2018 IEEE
PY - 2019/3
Y1 - 2019/3
N2 - An integrated power management (IPM) with the unique capabilities of seamless-voltage-/current-mode (SVCM) operation and energy recycling is presented for robust inductive power delivery. Utilizing parasitic bulk diodes with lower voltage drop, this IPM seamlessly transitions between voltage mode (VM) and current mode (CM) in a safe and robust fashion, extending the input-voltage range (removing dead zone) and significantly improving power-conversion efficiency (PCE) in CM operation. The IPM first provides the required load power (P L ) by one-step rectification/regulation, and then stores the surplus energy into a storage capacitor to extend the receiver (Rx) operation time via energy recycling when the input power is insufficient. The theory behind the energy recycling is presented. A proof-of-concept chip was fabricated in a 0. 35-µm CMOS process. In measurements, the chip safely achieved a regulated voltage of 3 V for a wide input-voltage range (without dead zone) by switching the Rx LC-tank at 142 kHz. With zero input power, the chip extended the Rx operation time by 250% thanks to the energy recycling.
AB - An integrated power management (IPM) with the unique capabilities of seamless-voltage-/current-mode (SVCM) operation and energy recycling is presented for robust inductive power delivery. Utilizing parasitic bulk diodes with lower voltage drop, this IPM seamlessly transitions between voltage mode (VM) and current mode (CM) in a safe and robust fashion, extending the input-voltage range (removing dead zone) and significantly improving power-conversion efficiency (PCE) in CM operation. The IPM first provides the required load power (P L ) by one-step rectification/regulation, and then stores the surplus energy into a storage capacitor to extend the receiver (Rx) operation time via energy recycling when the input power is insufficient. The theory behind the energy recycling is presented. A proof-of-concept chip was fabricated in a 0. 35-µm CMOS process. In measurements, the chip safely achieved a regulated voltage of 3 V for a wide input-voltage range (without dead zone) by switching the Rx LC-tank at 142 kHz. With zero input power, the chip extended the Rx operation time by 250% thanks to the energy recycling.
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U2 - 10.1109/JSSC.2018.2884322
DO - 10.1109/JSSC.2018.2884322
M3 - Article
C2 - 31662585
AN - SCOPUS:85058872323
SN - 0018-9200
VL - 54
SP - 874
EP - 884
JO - IEEE Journal of Solid-State Circuits
JF - IEEE Journal of Solid-State Circuits
IS - 3
M1 - 8580370
ER -