Title:
SWITCHING CONTROL DEVICE WITH TEMPERATURE PROTECTION FUNCTION AND POWER CONTROL DEVICE FOR VEHICLE
Document Type and Number:
Japanese Patent JP3656413
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize both a control operation and a temperature protection function which corresponds to a number of loads by mounting a power element with an over-temperature-breaking means for breaking current supply on the same substrate or an enclosure.
SOLUTION: Power elements (MOS-FET) 113-118 with an overtemperature automatic breaking function are mounted on a ceramic substrate 101, and a metal substrate 102 and are arranged in a box (enclosure) 110. Then, a wiring pattern is printed onto a substrate for electrical connection. In this case, power elements for a small current and for a large current are distributed to MOS-FET groups 113 and 114 or the like with overtemperature automatic breaking function and MOS-FET groups 115, 116, 117 or the like, respectively for grouping, and the thermal resistance of each group is changed, thus preventing automatic breaking in a steady load and operating an automatic breaking function in an abnormal current that is set to several times larger with respect to a steady load and hence allowing overtemperature protection to function fully.
Inventors:
Ichiro Osaka
Shuyuki Okamoto
Tatsuya Yoshida
Hiroyuki Saito
Mitsuhiko Watanabe
Shuyuki Okamoto
Tatsuya Yoshida
Hiroyuki Saito
Mitsuhiko Watanabe
Application Number:
JP18855398A
Publication Date:
June 08, 2005
Filing Date:
July 03, 1998
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B60R16/02; H02H5/04; (IPC1-7): H02H5/04; B60R16/02
Domestic Patent References:
| JP7142676A | ||||
| JP4242997A | ||||
| JP9076839A | ||||
| JP10145205A |
Attorney, Agent or Firm:
Yasuo Sakuta
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