1-W 3.3-16.3-V boosting wireless power transfer circuits with vector summing power controller

Kazutoshi Tomita; Ryota Shinoda; Tadahiro Kuroda; Hiroki Ishikuro

doi:10.1109/JSSC.2012.2211698

1-W 3.3-16.3-V boosting wireless power transfer circuits with vector summing power controller

Kazutoshi Tomita, Ryota Shinoda, Tadahiro Kuroda, Hiroki Ishikuro

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

This paper presents SD-card-size wireless power transfer system for large-volume contactless memory cards. Voltage is boosted simultaneously with power transfer, which eliminates the dc-dc converter or charge-pump circuit for data write operation into the flash memory chip. The proposed approach reduces the number of components and BOM cost and improves the total power efficiency. A vector summing technique is proposed to control the transmitting power and secondary side voltage. The transmitter and rectifier have been designed and fabricated using 0.18-μ m-CMOS with high voltage option. Voltage boost from 3.3 to 16.3 V and 1-W power transfer with 50% total efficiency have been successfully demonstrated, and the response time for the power control loop is shorter than 35 μs.

Original language	English
Article number	6301783
Pages (from-to)	2576-2585
Number of pages	10
Journal	IEEE Journal of Solid-State Circuits
Volume	47
Issue number	11
DOIs	https://doi.org/10.1109/JSSC.2012.2211698
Publication status	Published - 2012 Sep 18

Keywords

Coils
MOS devices
memory card
power control
voltage control
voltage-boosting circuits
wireless power transmission

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/JSSC.2012.2211698

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abstract = "This paper presents SD-card-size wireless power transfer system for large-volume contactless memory cards. Voltage is boosted simultaneously with power transfer, which eliminates the dc-dc converter or charge-pump circuit for data write operation into the flash memory chip. The proposed approach reduces the number of components and BOM cost and improves the total power efficiency. A vector summing technique is proposed to control the transmitting power and secondary side voltage. The transmitter and rectifier have been designed and fabricated using 0.18-μ m-CMOS with high voltage option. Voltage boost from 3.3 to 16.3 V and 1-W power transfer with 50% total efficiency have been successfully demonstrated, and the response time for the power control loop is shorter than 35 μs.",

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AU - Shinoda, Ryota

AU - Kuroda, Tadahiro

AU - Ishikuro, Hiroki

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