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Patent Searching and Data


Title:
LOAD DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/181815
Kind Code:
A1
Abstract:
A load driving device, wherein a logic unit 30 for switching on/off a switch element connected to a load includes: a switch signal generation circuit 31 for generating a switch signal S3 so that the switch element is left on by default in a time duration from when power is turned on until an external reset release is performed by a microcomputer (i.e., while S10 = H and XRST = L); an overcurrent protection circuit 32 for performing, after the external reset release, an output restriction of the switch signal S3 so as to forcibly switch the switch element off in response to an overcurrent detection signal S60; and a latch circuit 33 for performing, in the time duration from when power is turned on until the external reset release is performed by the microcomputer, an output restriction of the switch signal S3 so as to forcibly switch the switch element off with the overcurrent detection signal S60 serving as a latch trigger.

Inventors:
NAKASHIMA Takayuki (C/O ROHM CO. LTD, 21, Saiin Mizosaki-Cho, Ukyo-Ku, Kyoto-Sh, Kyoto 85, 〒6158585, JP)
OKUNO Yohei (C/O ROHM CO. LTD, 21, Saiin Mizosaki-Cho, Ukyo-Ku, Kyoto-Sh, Kyoto 85, 〒6158585, JP)
Application Number:
JP2018/013459
Publication Date:
October 04, 2018
Filing Date:
March 29, 2018
Export Citation:
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Assignee:
ROHM CO., LTD. (21 Saiin Mizosaki-Cho, Ukyo-Ku Kyoto-Sh, Kyoto 85, 〒6158585, JP)
International Classes:
H03K17/08; H02H7/122; H02M1/00
Foreign References:
JP2013051547A2013-03-14
JP2006320177A2006-11-24
JP2012039761A2012-02-23
Attorney, Agent or Firm:
SANO PATENT OFFICE (5F Tenmabashi-Yachiyo Bldg. Bekkan, 2-6 Tenmabashi-Kyomachi, Chuo-Ku, Osaka-Sh, Osaka 32, 〒5400032, JP)
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