How to Test IGBT Bricks - DMM Test & Lamp Test

How to Test IGBT Brick Modules with a Multimeter (DMM) and test IGBTs with a Lamp & Battery. www.kevingittemeier.com
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IGBT Test with the Digital Multimeter is useful when the IGBT module cannot easily be removed or isolated.
Lamp & Battery test for when the IGBT can be removed or isolated.
See end of video for diagrams.
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IGBT Battery Lamp Test:
- Wire lamp in series with 12v battery and IGBT polarity respective.
Negative of battery to E, Positive of battery to lamp, other side of lamp to C.
- Touch positive of battery and gate to turn on.
- Touch negative of battery and gate to turn off.
* Note touch battery first as IBGTs are ESD sensitive and can be damaged.
IGBT Digital Multimeter (DMM) Test Procedure:
Collector-Emitter Junction test:
- With the module out of circuit remove the conductive foam and short the gate to emitter.
- With DMM in diode check mode, the collector to emitter should give a normal diode reading with positive on the emitter and negative on the collector.
- The DMM should read open or infinite with positive on the collector and negative on the emitter. Damaged IGBTs may test as shorted in both positive and negative directions, open in both directions, or resistive in both directions.
Gate test: With the DMM in resistance mode the resistance from gate to collector and gate to emitter should read infinite on a good device. A damaged device may be shorted or have resistive leakage from gate to collector and/or emitter.
IGBT Brick Lamp Test,
IGBT Brick Multimeter Test,

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[@forexvenom0007]

Hi I've the same igbt from infineon technologies. At pin 4,5 and 6,7 two igbt gives values on diode mode. But one is not giving any values on that pins. Which one is faulty from these modules?

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Thanks!

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[@user-tm5ce3dv1c]

Output input voltage

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[@francuahf]

Please tell me, when checking the device, my modules seem to be intact, but when testing with a lamp, they open with a positive bias on the shutter and the lamp ignites, and if you remove the bias, they immediately close without holding the collector-emitter transition in the open state, is this correct or not?

[@KTFG]

If I am understanding you correctly it sounds bad to me. An IGBT should stay on once triggered with + (positive) on gate and turn off when - (negative) applied to gate. It could be that you are not fully turning it on with enough voltage.

[@francuahf]

@@KTFG Dr. Kevin, Thanks for the answer. Yes, it is powerful and high-voltage is 2mbi150n-120, I am trying to test it at 30 volts, it switches, but does not hold itself in this state, so we have doubts about its integrity.

[@mosalim7119]

one thing i dont understan why with battery test the positive in colector and when diode test the positive of dmm in Emeter how current will pass againest diode direction in battery test

[@KTFG]

It doesn’t pass through the diode. It passes through the IGBT. The diode is just flyback

[@mosalim7119]

thanks for the replay and infos i have an igbt with a shorted gate dose that mean that the high voltage has passed throgh the low voltage driver circuit and mabe damaged it the circuit is protected with diodes and they are fine dose this mean the high voltage didnt pass or diodes do allow reverse current higher then their limit and still stay healthy thanks alot

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what size resistor are you using ???

[@KTFG]

I believe that was a 1,000 ohm resistor but anything between a few hundred and few thousands ohms should be fine depending on voltage used. The resistor is just to slow the rate of electrons flooding or leaving the gate. Keep in mind when just using your finger and no resistor a dry body is typically several hundred thousand Ohms. I’ll eventually put more info on my website: www.kevingittemeier.com

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learning igbt,,I want to know what emitter terminal and how it hooked

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Download data sheet for the specific IGBT if necessary as seen in this video

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[@richcollins513]

what voltage triggers the gate tho?>

[@KTFG]

In this example we use the 12 volt battery & 9 volts from power supply to turn the IGBT On and Off by restoring electrons to the gate to turn it On (negative) or by stripping electrons from the gate to turn it off (positive). Check the data sheets of your IGBT for minimum and maximum gate voltage.

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