Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Patent
1994-10-12
1996-06-25
Wojciechowicz, Edward
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
257139, 257173, 257174, 257341, 257355, 257360, H01L 2976
Patent
active
055302777
ABSTRACT:
An insulated-gate bipolar transistor is formed of a number of cells integrally formed on a semiconductor substrate. The cells includes main cells with emitter electrodes, and current detection sensing cells situated adjacent to the main cells. Emitter electrodes are formed in an area of the sensing cells to be separated from the emitter electrodes of the main cells, and an overcurrent protection circuit is connected to the emitter electrodes of the sensing cells. When shorting accident occurs, an overcurrent protecting operation is performed such that an overcurrent is accurately detected through the sensing cells and a main current flowing through the main cells is made smaller than a short-circuit withstanding capacity of the IGBT by gate control of the protection circuit.
REFERENCES:
patent: 4965710 (1990-10-01), Pelly et al.
patent: 5063307 (1991-11-01), Zommer
Obinata Shigeyuki
Otsuki Masahito
Yano Yukio
Fuji Electric & Co., Ltd.
Wojciechowicz Edward
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