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Patent Searching and Data


Title:
IGNITION CONTROL DEVICE AND METHOD FOR ADJUSTING REFERENCE VOLTAGE FOR IGNITION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/159161
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a novel internal combustion engine ignition control device whereby the man-hours required for matching adjustment of a MOS gate voltage and the like is reduced without being affected by "component variation." A detection voltage is generated by a detection voltage generation part on the basis of a primary current which flows in a current detection resistor 26 formed from a metallic material and having "positive" temperature-dependent characteristics; and a reference voltage is generated by a reference voltage generation part on the basis of a current which is generated in accordance with a potential difference (proportional to thermal voltage VT) between a first bipolar transistor circuit 31 and a multiple connection type second bipolar transistor circuit 32 comprising parallel-connected multiple bipolar transistors and a resistance value of a first resistor 33 connected to the emitter side of the multiple-connection bipolar transistor circuit 32 and has "positive" temperature-dependent characteristics similar to those of the current detection resistor 26. According to this configuration, because the reference voltage value is determined by the ratio accuracy of the bipolar transistors, the man-hours required for matching adjustment of a MOS gate voltage and the like can be reduced without being affected by "component variation," thereby minimizing an increase in product unit price.

Inventors:
KITA MASATO (JP)
KOBAYASHI YOICHIRO (JP)
Application Number:
PCT/JP2018/002076
Publication Date:
September 07, 2018
Filing Date:
January 24, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02P3/05; G01R19/165; G05F1/10
Foreign References:
JP2013242245A2013-12-05
JPH09257840A1997-10-03
JPS63239368A1988-10-05
US4899715A1990-02-13
Attorney, Agent or Firm:
TODA Yuji (JP)
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