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Switching circuit using semiconductor switching element
   
Document Number
US Patent 7372315
Issued Date
May 13, 2008
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Abstract
A switching circuit includes a semiconductor switching element having a control electrode and a source-drain current path, the source-drain current path being connected between a voltage source and a load circuit, a parallel circuit formed by first and second transistors having respective collector-emitter paths connected between the control electrode of the semiconductor switching element and a reference potential point, a first resistor connected to the second transistor in series, a differential circuit connected between a control signal terminal and the base of the first transistor and a second resistor connected between the control signal terminal and the base of the second transistor. The first transistor is made conductive by a signal obtained by differentiating a control signal and subsequently the second transistor is made conductive to control the semiconductor switching element for ON/OFF.
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Number of Claims:
17
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Owner
Published
May 13, 2008
Application Number
11/420,341
Filed
May 25, 2006
US Classification
327/427   327/430
Int'l Classification
H03K   17/687   (20060101)  
Examiner
Assistant Examiner
Priority Data
May 26, 2005 [JP] 2005-154180
USPTO Field of Search
327/427   327/430  
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