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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Ohi; Takeshi
Address:
Tokyo, JP
No. of patents:
7
Patents:




Patent Number Title Of Patent Date Issued
7554173 Semiconductor device June 30, 2009
A semiconductor device accurately monitoring temperature of a semiconductor chip even in a noisy environment, while not requiring a highly accurate detection circuit. A PTC element is bonded onto an IGBT chip. Then, a constant current flows from a constant current source through the
6967519 Drive circuit for a power semiconductor device November 22, 2005
A drive circuit for a power semiconductor device includes: a sampling signal generating circuit for detecting that an input control signal instructs OFF and outputting a sampling signal at the time instant of start of a Miller period of time of an IGBT; a gate voltage detecting circu
6906574 Drive circuit for driving power semiconductor device June 14, 2005
A drive circuit includes a gate voltage detector that detects a gate-emitter voltage Vge that appears between the gate and emitter of a power semiconductor device throughout a detection time period during which a sampler allows the process of detecting the gate-emitter voltage Vge, a
6836006 Semiconductor module December 28, 2004
In an IGBT module which contains an IGBT device and a diode device connected to each other and accommodated in a case and which radiates heat generated in operation through a radiation board, an object is to reduce the area of the module in the lateral direction to achieve size reduction
6580147 Semiconductor device having built-in capacitors June 17, 2003
P-electrode 30a and N-electrode 31a of a semiconductor device 2, and capacitors 10 in a plate-like shape or a block-like shape respectively connected to U-phase 40, V-phase 41, and W-phase 42 having a switching element 20 and a diode 21 are built in a semiconductor device 2, and a si
6236110 Power semiconductor module May 22, 2001
A current detecting sensor includes parallel flat plates opposed in a substantially U-shape in cross-section. Since the flat plates are opposed to each other, the current detecting sensor has reduced inductance, significantly decreasing frequency dependency of outputs from detection
6215185 Power semiconductor module April 10, 2001
An object is to obtain long-term reliability of an electric connection in a power semiconductor module. In a power semiconductor module, the main circuit interconnection directly connected to a power semiconductor chip (3) is formed of a busbar (6) and the power semiconductor chip (3) an


 
 
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