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Title:
SWITCHING CIRCUIT
Document Type and Number:
Japanese Patent JP2018137899
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an overcurrent/overheat detection function of a switching element by a simple circuit.SOLUTION: In a switching element 106 with a minute value resistance for current detection as a source resistor, overcurrent protection and overheat protection of the switching element 106 are realized by connecting a temperature measurement resistance device 104 between a connection node 111 and a base of a transistor 103, connecting an interval between a collector of the transistor 103 and a gate electrode of the switching element 106 by a resistor 102, and connecting an interval between the gate electrode of the switching element 106 and a base electrode of the transistor 103 by a Zener diode 109.SELECTED DRAWING: Figure 1

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Inventors:
ISHIZAKA SATORU
OGAWA HIROTO
Application Number:
JP2017030830A
Publication Date:
August 30, 2018
Filing Date:
February 22, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02H3/08; H02H5/04; H03K17/08
Attorney, Agent or Firm:
特許業務法人深見特許事務所