File:IvsV IGBT.png

Summary[edit]

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following licenses:

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
	You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
	This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/2.5CC BY-SA 2.5 Creative Commons Attribution-Share Alike 2.5 truetrue

You may select the license of your choice.

 

This plot was created with Gnuplot.

-V{_{th}}=7 V' at 9.8,47 right

set label 4 '6 V' at 9.8,37.5 right set label 5 '5 V' at 9.8,26.5 right set label 6 '4 V' at 9.8,17.4 right set label 7 '3 V' at 9.8,10.5 right set label 8 '2 V' at 9.8,5.5 right set label 9 '1 V' at 9.8,2.5 right

1. The model is basically that of a mosfet, with a diode in series
2. Drain current in linear region

linear(vds,vgsvth)=2*vgsvth*vds-vds**2

1. Drain current in saturation region

saturation(vds,vgsvth)=vgsvth**2

1. Drain current

draincurrent(vds,vgsvth)=(vds>vgsvth?saturation(vds,vgsvth):linear(vds,vgsvth))

1. limit between saturation and linear regions

limit(vds)=vds**2

1. diode forward voltage:

Vf(t,vgsvth)=2*0.026*log(draincurrent(t,vgsvth)/10e-8)

set output "IvsV_IGBT.eps" set parametric set sample 2000

1. this is totally non physical: we calculate the current in the drain of the mosfet,
2. then use this value to calculate the voltage drop in the diode, and then plot Vf+voltage
3. on the x-axis, and the current on the y-axis. Then, I divide the voltage across the MOSFET
4. by an arbitrary factor (4) to get a steeper curve.

plot [0:40 ][0:10][0:50] Vf(t,1)+t/4,draincurrent(t,1) ls 1 title ,\

	Vf(t,2)+t/4,draincurrent(t,2) ls 1 title ,\
	Vf(t,3)+t/4,draincurrent(t,3) ls 1 title ,\

Vf(t,4)+t/4,draincurrent(t,4) ls 1 title ,\

	Vf(t,5)+t/4,draincurrent(t,5) ls 1 title ,\
	Vf(t,6)+t/4,draincurrent(t,6) ls 1 title ,\
	Vf(t,7)+t/4,draincurrent(t,7) ls 1 title 

}}