Abstract
This paper describes a dual-output, reconfigurable integrated power management (IPM) ASIC for inductive power delivery. The proposed ASIC operates either as a current-mode (CM) rectifier or a boost converter by sharing the receiver (Rx) coil (LRx) to improve performance of inductive power transmission against the variations of Rx input power (PRx) and dual-output DC power (PL+ PHv). Conventional IPM structures either fail to generate regulated outputs (e.g., VL and VHv when the required PL+ PHv exceeds PRx or suffer from low power-conversion efficiency (PCE) when PRx exceeds PL+ PHv due to voltage regulation and protection. To overcome these challenges, the proposed ASIC offers the unique capabilities of 1) generating multiple regulated outputs (VL= 2.6 V, VHv= 3.9 V) directly from LRx with single-stage conversion, 2) efficient CM operation with active rectification, enabled by adaptive switching control (ASC), 3) charging a large capacitor (CS) with the purpose of operating as a shared-inductor boost converter (SBC), transferring energy from CS to CL and CHv, when PRx< PL+ PHv, and 4) efficient voltage-power regulation (VPR). A proof-of-concept chip was fabricated in a 0.35-μm 2P4M standard CMOS process occupying 1.35-mm2 active area. In measurements, the proposed ASIC was able to successfully provide regulated VL= 2.6 V and VHv= 3.9 V despite significant variations in PRx, PL, and PHv. Moreover, the chip extended the peak output power range by 750% and improved the PCE by 1.3 times and 8.1 times thanks to the ASC and VPR, respectively.
| Original language | English (US) |
|---|---|
| Article number | 8811614 |
| Pages (from-to) | 1075-1086 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Biomedical Circuits and Systems |
| Volume | 13 |
| Issue number | 5 |
| DOIs | |
| State | Published - Oct 2019 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Biomedical Engineering
- Electrical and Electronic Engineering
Cite this
}
A Dual-Output Reconfigurable Shared-Inductor Boost-Converter/Current-Mode Inductive Power Management ASIC with 750% Extended Output-Power Range, Adaptive Switching Control, and Voltage-Power Regulation. / Gougheri, Hesam Sadeghi; Graybill, Philip; Kiani, Mehdi.
In: IEEE Transactions on Biomedical Circuits and Systems, Vol. 13, No. 5, 8811614, 10.2019, p. 1075-1086.Research output: Contribution to journal › Article
TY - JOUR
T1 - A Dual-Output Reconfigurable Shared-Inductor Boost-Converter/Current-Mode Inductive Power Management ASIC with 750% Extended Output-Power Range, Adaptive Switching Control, and Voltage-Power Regulation
AU - Gougheri, Hesam Sadeghi
AU - Graybill, Philip
AU - Kiani, Mehdi
PY - 2019/10
Y1 - 2019/10
N2 - This paper describes a dual-output, reconfigurable integrated power management (IPM) ASIC for inductive power delivery. The proposed ASIC operates either as a current-mode (CM) rectifier or a boost converter by sharing the receiver (Rx) coil (LRx) to improve performance of inductive power transmission against the variations of Rx input power (PRx) and dual-output DC power (PL+ PHv). Conventional IPM structures either fail to generate regulated outputs (e.g., VL and VHv when the required PL+ PHv exceeds PRx or suffer from low power-conversion efficiency (PCE) when PRx exceeds PL+ PHv due to voltage regulation and protection. To overcome these challenges, the proposed ASIC offers the unique capabilities of 1) generating multiple regulated outputs (VL= 2.6 V, VHv= 3.9 V) directly from LRx with single-stage conversion, 2) efficient CM operation with active rectification, enabled by adaptive switching control (ASC), 3) charging a large capacitor (CS) with the purpose of operating as a shared-inductor boost converter (SBC), transferring energy from CS to CL and CHv, when PRx< PL+ PHv, and 4) efficient voltage-power regulation (VPR). A proof-of-concept chip was fabricated in a 0.35-μm 2P4M standard CMOS process occupying 1.35-mm2 active area. In measurements, the proposed ASIC was able to successfully provide regulated VL= 2.6 V and VHv= 3.9 V despite significant variations in PRx, PL, and PHv. Moreover, the chip extended the peak output power range by 750% and improved the PCE by 1.3 times and 8.1 times thanks to the ASC and VPR, respectively.
AB - This paper describes a dual-output, reconfigurable integrated power management (IPM) ASIC for inductive power delivery. The proposed ASIC operates either as a current-mode (CM) rectifier or a boost converter by sharing the receiver (Rx) coil (LRx) to improve performance of inductive power transmission against the variations of Rx input power (PRx) and dual-output DC power (PL+ PHv). Conventional IPM structures either fail to generate regulated outputs (e.g., VL and VHv when the required PL+ PHv exceeds PRx or suffer from low power-conversion efficiency (PCE) when PRx exceeds PL+ PHv due to voltage regulation and protection. To overcome these challenges, the proposed ASIC offers the unique capabilities of 1) generating multiple regulated outputs (VL= 2.6 V, VHv= 3.9 V) directly from LRx with single-stage conversion, 2) efficient CM operation with active rectification, enabled by adaptive switching control (ASC), 3) charging a large capacitor (CS) with the purpose of operating as a shared-inductor boost converter (SBC), transferring energy from CS to CL and CHv, when PRx< PL+ PHv, and 4) efficient voltage-power regulation (VPR). A proof-of-concept chip was fabricated in a 0.35-μm 2P4M standard CMOS process occupying 1.35-mm2 active area. In measurements, the proposed ASIC was able to successfully provide regulated VL= 2.6 V and VHv= 3.9 V despite significant variations in PRx, PL, and PHv. Moreover, the chip extended the peak output power range by 750% and improved the PCE by 1.3 times and 8.1 times thanks to the ASC and VPR, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85074874391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85074874391&partnerID=8YFLogxK
U2 - 10.1109/TBCAS.2019.2937253
DO - 10.1109/TBCAS.2019.2937253
M3 - Article
C2 - 31449030
AN - SCOPUS:85074874391
VL - 13
SP - 1075
EP - 1086
JO - IEEE Transactions on Biomedical Circuits and Systems
JF - IEEE Transactions on Biomedical Circuits and Systems
SN - 1932-4545
IS - 5
M1 - 8811614
ER -