Abstract
A 6.78 MHz resonant wireless power transfer (WPT) system with a 5 W fully integrated power receiver is presented. A conventional low-dropout (LDO) linear regulator supplies power for operating the circuit in the power receiver. However, as the required operating current increases, the power consumption of the LDO regulator increases, which degrades the power efficiency. In order to increase the power efficiency of the receiver, this work proposes a power supply switching circuit (PSSC). When operation starts, the PSSC changes the power source from the low-efficiency LDO regulator to the high-efficiency step-down DC-DC converter. The LDO regulator operates only for initialization. This chip has been fabricated using 0.18 μm high-voltage bipolar- CMOS-DMOS (double-diffused metal-oxide-semiconductor) (BCD) technology with a die area of 2.5 mm × 2.5 mm. A maximum power transfer efficiency of 81% is measured.
| Original language | English |
|---|---|
| Article number | 7838086 |
| Pages (from-to) | 349-354 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Consumer Electronics |
| Volume | 62 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2016 Nov 1 |
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Keywords
- A4WP
- resonant coupling
- wireless power receiver
- Wireless power transfer system
ASJC Scopus subject areas
- Media Technology
- Electrical and Electronic Engineering
Cite this
Design of a 5-W power receiver for 6.78 MHz resonant wireless power transfer system with power supply switching circuit. / Moon, Junil; Hwang, Hyeonseok; Jo, Byeonghak; Shin, Hee Am; Kim, Soo-Won.
In: IEEE Transactions on Consumer Electronics, Vol. 62, No. 4, 7838086, 01.11.2016, p. 349-354.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Design of a 5-W power receiver for 6.78 MHz resonant wireless power transfer system with power supply switching circuit
AU - Moon, Junil
AU - Hwang, Hyeonseok
AU - Jo, Byeonghak
AU - Shin, Hee Am
AU - Kim, Soo-Won
PY - 2016/11/1
Y1 - 2016/11/1
N2 - A 6.78 MHz resonant wireless power transfer (WPT) system with a 5 W fully integrated power receiver is presented. A conventional low-dropout (LDO) linear regulator supplies power for operating the circuit in the power receiver. However, as the required operating current increases, the power consumption of the LDO regulator increases, which degrades the power efficiency. In order to increase the power efficiency of the receiver, this work proposes a power supply switching circuit (PSSC). When operation starts, the PSSC changes the power source from the low-efficiency LDO regulator to the high-efficiency step-down DC-DC converter. The LDO regulator operates only for initialization. This chip has been fabricated using 0.18 μm high-voltage bipolar- CMOS-DMOS (double-diffused metal-oxide-semiconductor) (BCD) technology with a die area of 2.5 mm × 2.5 mm. A maximum power transfer efficiency of 81% is measured.
AB - A 6.78 MHz resonant wireless power transfer (WPT) system with a 5 W fully integrated power receiver is presented. A conventional low-dropout (LDO) linear regulator supplies power for operating the circuit in the power receiver. However, as the required operating current increases, the power consumption of the LDO regulator increases, which degrades the power efficiency. In order to increase the power efficiency of the receiver, this work proposes a power supply switching circuit (PSSC). When operation starts, the PSSC changes the power source from the low-efficiency LDO regulator to the high-efficiency step-down DC-DC converter. The LDO regulator operates only for initialization. This chip has been fabricated using 0.18 μm high-voltage bipolar- CMOS-DMOS (double-diffused metal-oxide-semiconductor) (BCD) technology with a die area of 2.5 mm × 2.5 mm. A maximum power transfer efficiency of 81% is measured.
KW - A4WP
KW - resonant coupling
KW - wireless power receiver
KW - Wireless power transfer system
UR - http://www.scopus.com/inward/record.url?scp=85012004954&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85012004954&partnerID=8YFLogxK
U2 - 10.1109/TCE.2016.7838086
DO - 10.1109/TCE.2016.7838086
M3 - Article
AN - SCOPUS:85012004954
VL - 62
SP - 349
EP - 354
JO - IEEE Transactions on Consumer Electronics
JF - IEEE Transactions on Consumer Electronics
SN - 0098-3063
IS - 4
M1 - 7838086
ER -