发明名称 POWER SUPPLY DEVICE AND POWER SUPPLY METHOD
摘要 <P>PROBLEM TO BE SOLVED: To provide a power supply device and a power supply method having determination accuracy of overcurrent occurrence. <P>SOLUTION: The power supply device includes: a switching element connected between a power source and load; a current detection section for outputting detection current corresponding to load current supplied from the power source to the load via the switching element; and an overcurrent determination section including a first circuit having a characteristic in which an input/output ratio becomes high according to a difference between loss by the load current and allowable power dissipation and a second circuit having an output characteristic proportional to the load current to perform an overcurrent determination by an addition value of an output of the first circuit and an output of the second circuit when the detection current is inputted. <P>COPYRIGHT: (C)2013,JPO&INPIT
申请公布号 JP2012208652(A) 申请公布日期 2012.10.25
申请号 JP20110072835 申请日期 2011.03.29
申请人 FURUKAWA ELECTRIC CO LTD:THE;FURUKAWA AUTOMOTIVE SYSTEMS INC 发明人 TSUDA RYUTA;FURUKAWA KAZUNARI
分类号 G05F1/10;G01R19/165;H02H3/087;H02H7/20 主分类号 G05F1/10
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