書誌事項
- タイトル別名
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- Variable-stage Switched Capacitor-type DC-DC Converter for Thermoelectrically-powered Wristwatch with Simple MPPT Function
- カンイ MPPT キノウ オ ユウスル ネツ ハツデン ウデドケイヨウ カヘンダンスウガタ スイッチトキャパシタショウアツ カイロ
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A DC-DC converter scheme for thermoelectrically powered wristwatch is described. The converter consists of a variable-stage switched-capacitor (SC) circuit, a clock circuit, and a control circuit. The converter boosts the output voltage of thermoelectric (TE) generator that outputs a voltage of over 0.25V and supplies the generating power to a rechargeable battery with a voltage of 1.3V. A simple maximum-power-point-tracking technique makes it possible to extract power, which is close to maximum power, from the TE generator with a large internal resistance of 1.2kΩ. The maximum power point was automatically obtained by detecting the output open voltage of the variable-stage SC circuit and also by selecting the stage of multi-stage SC circuits. To verify the effectiveness of our converter, we fabricated a prototype with a 0.6μm CMOS process and measured the power extracted from a TE generator. The power extraction efficiency to the converter is 89% and the total conversion efficiency of the power supply module is 29%.
収録刊行物
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- 電気学会論文誌C(電子・情報・システム部門誌)
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電気学会論文誌C(電子・情報・システム部門誌) 133 (2), 226-233, 2013
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204608406528
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- NII論文ID
- 10031142429
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- NII書誌ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL書誌ID
- 024280256
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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