Short on-pulse reverse recovery behavior of free wheeling diode (FWD)

Author

Nagaune, Fumio ; Miyasaka, Tadashi ; Tagami, Saburo ; Shigekane, Hisao ; Kirihata, Humiaki ; Palmer, P.R.

Author_Institution

Fuji Hitachi Power Semicond. Co. Ltd., Nagano, Japan

fYear

2001

fDate

2001

Firstpage

203

Lastpage

206

Abstract

The critical reverse recovery phenomenon of a free wheeling diode (FWD) occurring after an on-pulse current flow shorter than 1 μs has been investigated by use of an 1800 V/800 A IGBT module. In this case, the extremely high spike voltage and high dv/dt as well as the voltage-current oscillation are observed. From a two-dimensional device simulation combining an external circuit, it is concluded that the critical reverse recovery phenomenon is originated from the smaller carrier injection into the n-base layer within a short on-pulse period. The oscillation occurring after the high voltage spike generation is due to LC resonance between the completely depleted FWD chips and the inductance of external circuit. Thus the generation of high spike voltage and high dv/dt over the voltage ratings signifies the destruction of semiconductor device like a wedge-shaped damage on the guard ring region of the FWD chip edge

Keywords

insulated gate bipolar transistors; semiconductor device models; semiconductor diodes; 2D device simulation; IGBT module; LC resonance; Si; carrier injection; critical reverse recovery; external circuit; free wheeling diode; on-pulse current flow; spike generation; spike voltage; voltage-current oscillation; wedge-shaped damage; Circuit simulation; Inductance; Insulated gate bipolar transistors; Power engineering and energy; Pulse width modulation; RLC circuits; Resonance; Semiconductor diodes; Transient analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Semiconductor Devices and ICs, 2001. ISPSD '01. Proceedings of the 13th International Symposium on

Conference_Location

Osaka

ISSN

1063-6854

Print_ISBN

4-88686-056-7

Type

conf

DOI

10.1109/ISPSD.2001.934590

Filename

934590