A 0.025-0.45 W 60%-efficiency inductive-coupling power transceiver with 5-bit dual-frequency feedforward control for non-contact memory cards

Hayun Chung, Andrzej Radecki, Noriyuki Miura, Hiroki Ishikuro, Tadahiro Kuroda

研究成果: Article

10 引用 (Scopus)

抄録

A 0.025-0.45 W inductive-coupling power transceiver for non-contact memory applications is presented. To deal with sudden and large load variations and achieve high-efficiency, we propose a power transceiver with 5-bit feedforward control. Knowing that load patterns of a memory card have strong correlation with commands issued by a host, feedforward control is applied to minimize response times. To achieve 5-bit power levels, the proposed transceiver utilizes pulse-density modulation (PDM) and a multi-channel structure. Different operation frequencies are chosen for each channel to maximize power transfer efficiency. To further improve transceiver efficiency and enable high-speed operation, an active rectifier with a fast positive feedback is proposed. The test prototype demonstrates 40%-70% efficiency across all load conditions and 60% efficiency in average, which are over an order of magnitude improvements compared to prior arts.

元の言語English
記事番号6293915
ページ(範囲)2496-2504
ページ数9
ジャーナルIEEE Journal of Solid-State Circuits
47
発行部数10
DOI
出版物ステータスPublished - 2012

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Feedforward control
Transceivers
Data storage equipment
Modulation
Feedback

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

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abstract = "A 0.025-0.45 W inductive-coupling power transceiver for non-contact memory applications is presented. To deal with sudden and large load variations and achieve high-efficiency, we propose a power transceiver with 5-bit feedforward control. Knowing that load patterns of a memory card have strong correlation with commands issued by a host, feedforward control is applied to minimize response times. To achieve 5-bit power levels, the proposed transceiver utilizes pulse-density modulation (PDM) and a multi-channel structure. Different operation frequencies are chosen for each channel to maximize power transfer efficiency. To further improve transceiver efficiency and enable high-speed operation, an active rectifier with a fast positive feedback is proposed. The test prototype demonstrates 40{\%}-70{\%} efficiency across all load conditions and 60{\%} efficiency in average, which are over an order of magnitude improvements compared to prior arts.",
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AU - Chung, Hayun

AU - Radecki, Andrzej

AU - Miura, Noriyuki

AU - Ishikuro, Hiroki

AU - Kuroda, Tadahiro

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KW - Active rectifier

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KW - inductive-coupling

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KW - wide load range

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