VEHICULAR POWER UNIT

WIPO Patent Application WO/2010/052947

A1

Disclosed is a vehicular power unit having an idling stop function.  The vehicular power unit comprises a booster converter circuit of little loss, which compensates the voltage drop of a battery at an engine starting time and which has a protecting function at the time when the battery is erroneously connected in reversed polarities.  The vehicular power unit is constituted such that a series circuit including two series-connected MOSFETs (32 and 33) and an inductor (31) is connected with the two terminals of a DC power source, such that a diode (34) is connected with the node between the two series-connected MOSFETs (32 and 33) and the inductor (31), and such that a condenser (35) is connected in parallel with the two series-connected MOSFETs (32 and 33).  These two MOSFETs (32 and 33) are connected in series so that the mutual body diodes thereof may have the opposite polarities.

HARA Takashi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
原隆志 (〒55 京都府長岡京市東神足１丁目１０番１号　株式会社　村田製作所内 Kyoto, 〒6178555, JP)
IKENARI Masashi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)

JP2009/061075

May 14, 2010

June 18, 2009

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Murata Manufacturing Co., Ltd. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
株式会社村田製作所 (〒55 京都府長岡京市東神足１丁目１０番１号 Kyoto, 〒6178555, JP)
HARA Takashi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
原隆志 (〒55 京都府長岡京市東神足１丁目１０番１号　株式会社　村田製作所内 Kyoto, 〒6178555, JP)

H02M3/155

Kaede Patent Attorneys' Office (1-4-34, Noninbashi Chuo-ku, Osaka-sh, Osaka 11, 〒5400011, JP)

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