Author Topic: Datasheet Question  (Read 525 times)

Offline ritaismyconscience

  • High Voltage Technician
  • ***
  • Posts: 163
  • Karma: +3/-0
    • View Profile
Datasheet Question
« on: June 03, 2020, 08:10:27 AM »
Many datasheets have Ilm (Clamped Inductive Load Current). This number is higher than Icm, which should be the maximum current you can put through the transistor right?

For example, this transistor has an Ilm of 480A but Icm of 360A. Would it be safe to put 480A through the transistor?
https://www.infineon.com/dgdl/irgps4067dpbf.pdf?fileId=5546d462533600a401535656fe252499


Here's what I found on the internet: https://www.infineon.com/dgdl/Infineon-IGBT_Characteristics-AN-v01_00-EN.pdf?fileId=5546d462533600a40153559f8d921224

I still don't understand what Ilm means, is it Icm + reverse current flowing through diode when the transistor switches?

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1738
  • Karma: +42/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Datasheet Question
« Reply #1 on: June 03, 2020, 08:01:53 PM »
Quote
Clamped Inductive Load Current (ILM). This rating is described in Section 6 and is important in most hardswitching applications. The test circuit can be found in the data sheet (it has changed over the years) and is the same as the switching loss test circuit. This circuit exposes the IGBT to the peak recovery current of the free-wheeling diode, which adds a significant component to the turn-on losses. This rating guarantees that the device can sustain high voltage and high current simultaneously, i.e. a square switching SOA. The test conditions for ILM are specified in the data sheet. This complements the information supplied by the RBSOA.

It is really not of interest due to softswitching is used in a DRSSTC, it does however tell that this IGBT is a little more rugged than normal parts.

The square SOA is interesting for hardswitching, that the device can be at full voltage and full current when switching, so in softswitching you could properly push it further as its built for higher switching losses.

In almost any other datasheet you will see that the SOA has the corner cut away, so you can have either high voltage and half current or half voltage and high current.
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

High Voltage Forum

Re: Datasheet Question
« Reply #1 on: June 03, 2020, 08:01:53 PM »

 


* Recent Topics and Posts

post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
Today at 01:06:02 AM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
Today at 12:44:31 AM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
Today at 12:41:33 AM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
Today at 12:11:13 AM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
June 13, 2021, 11:52:11 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
June 13, 2021, 11:38:44 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
June 13, 2021, 10:26:51 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
June 13, 2021, 09:57:56 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
June 13, 2021, 09:29:08 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
June 13, 2021, 08:53:25 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
June 13, 2021, 07:22:05 PM
post Re: First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
June 13, 2021, 07:02:28 PM
post Re: HFSSTC with fixed crystal-controlled frequency
[Solid State Tesla Coils (SSTC)]
Steve Ward
June 13, 2021, 06:25:20 PM
post First middle sized DRSSTC - Phase lead tuning
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rapy2
June 13, 2021, 02:48:59 PM
post OpenTheremin v3 loosing calibration after minutes
[Electronic Circuits]
gianpaolo
June 13, 2021, 12:00:09 PM
post Re: What is the guidence on SpaceX rockets based on ? PID's?
[General Chat]
Mads Barnkob
June 12, 2021, 07:28:03 PM
post Re: Rocket engine questions
[General Chat]
klugesmith
June 12, 2021, 07:23:12 PM
post Re: Rocket engine questions
[General Chat]
rikkitikkitavi
June 12, 2021, 12:24:06 PM
post Re: Nice PC Board Tesla
[Solid State Tesla Coils (SSTC)]
Da_Stier
June 12, 2021, 10:06:18 AM
post Re: Rocket engine questions
[General Chat]
plasma
June 12, 2021, 10:01:29 AM
post Re: Nice PC Board Tesla
[Solid State Tesla Coils (SSTC)]
Twospoons
June 12, 2021, 08:47:08 AM
post Re: What is the guidence on SpaceX rockets based on ? PID's?
[General Chat]
Patrick
June 12, 2021, 07:03:10 AM
post Re: Complications in the design of the first DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
PEDRO HENRIQUE
June 12, 2021, 06:42:56 AM
post Re: Nice PC Board Tesla
[Solid State Tesla Coils (SSTC)]
davekni
June 12, 2021, 04:20:53 AM
post Re: SKM100 Mini DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Willsmith001
June 11, 2021, 11:08:24 PM
post Re: How much propagation delay is too much propagation delay
[General Chat]
Willsmith001
June 11, 2021, 11:07:00 PM
post Re: Nice PC Board Tesla
[Solid State Tesla Coils (SSTC)]
Da_Stier
June 11, 2021, 12:33:55 PM
post Re: Nice PC Board Tesla
[Solid State Tesla Coils (SSTC)]
futurist
June 11, 2021, 12:03:24 PM
post Re: How much propagation delay is too much propagation delay
[General Chat]
davekni
June 11, 2021, 06:47:52 AM
post Re: How much propagation delay is too much propagation delay
[General Chat]
Power-Max
June 11, 2021, 06:32:02 AM
post Re: How much propagation delay is too much propagation delay
[General Chat]
davekni
June 11, 2021, 05:16:03 AM
post Re: SKM100 Mini DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
June 11, 2021, 04:53:50 AM
post Re: Why are SGT50T65FD1PN soo cheap on lcsc?
[General Chat]
Hydron
June 10, 2021, 11:51:17 PM
post Re: Rocket engine questions
[General Chat]
MRMILSTAR
June 10, 2021, 09:52:59 PM
post Re: Rocket engine questions
[General Chat]
Patrick
June 10, 2021, 09:16:25 PM
post Re: Why are SGT50T65FD1PN soo cheap on lcsc?
[General Chat]
Weston
June 10, 2021, 08:19:40 PM
post Fujifilm PMT module PMT12A, reverse engineering
[Detection, Counting and Measurements]
Mads Barnkob
June 10, 2021, 08:05:27 PM
post Nice PC Board Tesla
[Solid State Tesla Coils (SSTC)]
alan sailer
June 10, 2021, 07:46:12 PM
post Re: Is it possible to go fully CW with a DRSSRC?
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Uspring
June 10, 2021, 06:31:40 PM
post Re: Why are SGT50T65FD1PN soo cheap on lcsc?
[General Chat]
rikkitikkitavi
June 10, 2021, 02:12:07 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic Circuits]
T3sl4co1l
June 10, 2021, 05:14:41 AM
post How much propagation delay is too much propagation delay
[General Chat]
Power-Max
June 10, 2021, 05:10:24 AM
post Re: Why are SGT50T65FD1PN soo cheap on lcsc?
[General Chat]
Power-Max
June 10, 2021, 04:50:34 AM
post Re: SKM100 Mini DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
alan sailer
June 10, 2021, 01:36:31 AM
post Re: Why are SGT50T65FD1PN soo cheap on lcsc?
[General Chat]
Steve Ward
June 09, 2021, 09:15:22 PM
post Re: Is it possible to go fully CW with a DRSSRC?
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Power-Max
June 09, 2021, 08:02:15 PM
post Re: Complications in the design of the first DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
PEDRO HENRIQUE
June 09, 2021, 07:17:27 PM
post Re: Analog HFBR amplifier
[Electronic Circuits]
Max
June 09, 2021, 06:58:33 PM
post Aisler PCB Manufacturer
[Printed Circuit Board]
Max
June 09, 2021, 06:58:12 PM
post [WTS] (US) Large Ferrite U and E Cores, assorted types
[Sell / Buy / Trade]
Steve Ward
June 09, 2021, 05:44:06 PM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
SimplePortal 2.3.6 © 2008-2014, SimplePortal