Insulated-gate type bipolar transistor

Details Insulated-gate type bipolar transistor Insulated-gate type bipolar transistor

1995-03-01

1996-09-17

Prenty, Mark V.

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

257355, 257378, H01L 2976

Patent

active

055571280

ABSTRACT:
For stabilized overcurrent protection, an insulated-gate type bipolar transistor (IGBT) is provided with an overcurrent limiting feature having reduced dependence of the limited-current value on the power supply voltage. Sensing cells 9 for current detection are formed on part of a semiconductor substrate 5 on which a large number of IGBT main cells 6 are formed integratedly. Emitter electrodes 10 of the sensing cells are connected to an external overcurrent-protection circuit for current detection and overcurrent protection. The sensing cells and the main cells are electrically separated. P-wells 11 for drawing out hole current, connected to the emitter electrodes of the main cells, are formed in a region along the circumference of the sensing cells so that interference between the carriers of the main cells and those of the sensing cells is suppressed and current ratio is stabilized.

REFERENCES:
patent: 4136354 (1979-01-01), Dobkin
patent: 4688065 (1987-08-01), Kinoshita et al.
patent: 4783690 (1988-11-01), Walden et al.
patent: 5045900 (1991-09-01), Tamagawa
patent: 5097302 (1992-03-01), Fujihira et al.
patent: 5303110 (1994-04-01), Kumagai
patent: 5341003 (1994-08-01), Obinata

Affiliated with

Also associated with

Rating

Insulated-gate type bipolar transistor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Insulated-gate type bipolar transistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Insulated-gate type bipolar transistor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-415173