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Patent Searching and Data


Title:
PWM SIGNAL GENERATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2007/046363
Kind Code:
A1
Abstract:
After a moment in time when the level of an output signal (S4) is inverted by first and second short circuit FETs (55, 56) as a circuit for inhibiting level inversion, the inverted state is sustained and level inversion is inhibited. At a moment in time when the level is inverted next at a regular timing corresponding to the desired duty ratio of a PWM signal S1, inhibition of level inversion is lifted. Consequently, chattering can be prevented even when the level of a reference signal (S3) is varied by, for example, noise during acceleration of a vehicle and a PWM signal (S1) having a stabilized duty ratio can be generated.

Inventors:
KATO, Masayuki (1-14, Nishisuehiro-ch, Yokkaichi-shi Mie 03, 5108503, JP)
加藤 雅幸 (〒03 三重県四日市市西末広町1番14号 株式会社オートネットワーク技術研究所内 Mie, 5108503, JP)
TAKAHASHI, Seiji (1-14, Nishisuehiro-ch, Yokkaichi-shi Mie 03, 5108503, JP)
高橋 成治 (〒03 三重県四日市市西末広町1番14号 株式会社オートネットワーク技術研究所内 Mie, 5108503, JP)
Application Number:
JP2006/320626
Publication Date:
April 26, 2007
Filing Date:
October 17, 2006
Export Citation:
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Assignee:
AUTONETWORKS TECHNOLOGIES, LTD. (1-14, Nishisuehiro-cho Yokkaichi-shi Mie, 03, 5108503, JP)
株式会社オートネットワーク技術研究所 (〒03 三重県四日市市西末広町1番14号 Mie, 5108503, JP)
SUMITOMO WIRING SYSTEMS, LTD. (1-14, Nishisuehiro-cho Yokkaichi-shi Mie, 03, 5108503, JP)
住友電装株式会社 (〒03 三重県四日市市西末広町1番14号 Mie, 5108503, JP)
SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-k, Osaka-shi Osaka 41, 5410041, JP)
住友電気工業株式会社 (〒41 大阪府大阪市中央区北浜4丁目5番33号 Osaka, 5410041, JP)
KATO, Masayuki (1-14, Nishisuehiro-ch, Yokkaichi-shi Mie 03, 5108503, JP)
International Classes:
H03K7/08; H02M7/48; H03K17/16
Foreign References:
JPH1141077A
JPH1197989A
JPH05168164A
Attorney, Agent or Firm:
GORO, Kazuo et al. (AKATSUKI UNION PATENT FIRM, Midori Nagoya Bldg. 8th Floor 22-4, Meieki 3-chome, Nakamura-k, Nagoya-shi Aichi 02, 4500002, JP)
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