A new IGBT with a monolithic over-current protection circuit

Author

Seki, Yasukazu ; Harada, Yuichi ; Iwamuro, Noriyuki ; Kumagai, Naoki

Author_Institution

Adv. Device Technol. Lab., Fuji Electr. Corp. Res. & Dev. Ltd., Matsumoto, Japan

fYear

1994

fDate

31 May-3 Jun 1994

Firstpage

31

Lastpage

35

Abstract

A new IGBT structure with a monolithic overcurrent sensing and protection circuit has been developed. The feature of this device is a novel integration of a sensing and protection circuit which consists of a sensing IGBT, lateral n-MOSFET, polycrystalline silicon diode and resistor with an IGBT structure. The conventional IGBT fabrication process is available to this device with only one more photomask. Comparison of not only a short circuit safe operating area but both a trade-off characteristics between an on-state voltage drop and a turn-off loss and reverse biased safe operating area with a conventional IGBT has been investigated. Since exhibiting a large short circuit safe operating area without deterioration of any other device characteristics, this device can be applied to not only a soft switching application like voltage resonant circuit but a hard switching application like snubberless inductive load circuit

Keywords

power integrated circuits; IGBT fabrication process; IGBT structure; Si; hard switching application; lateral n-MOSFET; monolithic overcurrent protection circuit; onstate voltage drop; polycrystalline Si diode; reverse biased SOA; safe operating area; sensing IGBT; short circuit SOA; snubberless inductive load circuit; soft switching application; turnoff loss; voltage resonant circuit; Diodes; Fabrication; Insulated gate bipolar transistors; MOSFET circuits; Protection; RLC circuits; Resistors; Silicon; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Semiconductor Devices and ICs, 1994. ISPSD '94., Proceedings of the 6th International Symposium on

Conference_Location

Davos

ISSN

1063-6854

Print_ISBN

0-7803-1494-8

Type

conf

DOI

10.1109/ISPSD.1994.583634

Filename

583634