Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [igbt]

Insulated-gate bipolar transistor, voltage-driven power transistor with fast switching times

IGBTs have fast switching times, and are not spec'd for operation in an analog region. For these reasons, they are typically used in switching applications, such as switched-mode power supplies and PWM motor drives. They switch slower than FETs, and thus have higher switching losses. But IGBTs are available in higher voltage ranges than FETs, making them the only solution for many applications.

299 questions
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What is the use of the fourth leg, the one with igbt in series with the diode, in the infineon power module?

The circuit shown below is the schematic of infineon PIM module. I am specifically interested in FP15R12W1T4. From the schematic I could understand all elements other than the 4th leg which has an igbt in series with a diode. I am new to this field.…
Vivek Vijayan
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Replacing transistors in 110 kW power cabinet

Power cabinet 110 kW (3P). One of the IGBT transistors (400A) on the bus is broken. I heard that it's necessary to change all three transistors. And that it's important that all three transistors should have absolutely identical characteristics. Is…
Sid
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IGBT won't open in spark circuit

I'm building a EDM machine for removing broken metal-working taps. I'm using the following circuit, but having issues with the IGBT transistor R1 = 2Ohm resistor C1 & C2 = 1000uf 100V capacitor IGBT = IRG4PC40KDPbF IGBT P = from the positive side…
Derek Bartram
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How to check an IGBT

I want to check an IGBT FGA25N120ANTD whether it is broken or not. I have a good multimeter. I followed some online videos I cannot figure out the right way. Could you please help?
sreekanth
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Calculate switching frequency of an IGBT

This might be an elementary question - how can I determine the switching frequency of an IGBT e.g. IXGH15N120B? Will this IGBT be suitable for a switching frequency up to 250 kHz?
Mr. Infinite
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IGBT VCEsat maximum rating dependence on VGE

Building an application with IGBTs up to 1000V and using IXGA20N120A3 rated at 1200V. However datasheet states that this rating is for a Vge = 0V. We are driving the IGBT with -12V during turn off to avoid self turn on and was wandering if the…
SolarTec
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How this voltage resonant soft-switching IGBT works?

In this voltage resonant soft-switching IGBT: 1) When IGBT turns off, what is the reason why Vce slowly(sinusoidally) increases after current turns off? Was it because the stored voltage in L1 is slowly discharged so that Vce will not abruptly…
hontou_
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Reverse blocking IGBTs no longer available, why?

I've been looking at IGBTs for a power project. Primarily since they can handle high voltage and have decent reverse blocking capabilities. Two devices I'm familiar with are Punch Through (PT) and Non-Punch Through (NPT). A third one was offered a…
User Hostile
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Replacing Generic IGBT with CoPack IGBT

The IGBT of my induction cooker recently blown up and I have found it's FGA20S125P which is a 1250V 20A Shorted anode type IGBT. The datasheet is available here. However I couldn't find this IGBT model and overseas orders would take months to reach…
Anuradha
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Which terminals are collector, emitter, and gate on this IGBT?

I am new to IGBTs. I want to experiment with them. I got this older IGBT but unfortunately have no data on it (and all the data I find on the web is fake by resellers.) How do I know which is gate, collector, and emitter?
user391339
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What causes a three terminal short circuit failure in IGBT

A pair of IGBTs that I was using in a high frequency application failed with 3 terminal short. The devices are rated 650V that's well higher than the operated voltage of 200 V. Snubbers were working effective in the circuit. So, the failure could…
Emmanuel
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How soft-switching works in these circuit?

I read that one of the major power losses of an IGBT circuit is its switching losses.In order to overcome it, soft-switching is used. The book gave an example with the circuit diagram: This is know as "soft switching". The voltage or current…
hontou_
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How to tell if an IGBT is latched or broken?

I recently bought an IXXH80N65B4 high voltage/current IGBT. I had it wired according to the circuit below, which is part of a coil gun. After successfully firing the gun twice, I used the same IGBT in the below circuit, in preparation for the…
Aleksandr Spackman
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How can I correct this IGBT problem?

Why doesn't my IGBT module work? I shared my Multisim file as a download google drive file. Can you solve the IGBT problem? IGBT strangely doesn't work. The emitter voltage is only 12V. I expected it to be equal to Vcc - about 98V. IGBT test…
Murat Özen
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How to find out the maximum Ampere that an IGBT can withstand

I want to replace an IGBT on my board with a new one. But when I Googled the old one (G40N60 UFD C13AK), I couldn't find its Datasheet to find out its maximum Ampere. Is there another way to find its Ampere? Thanks for all who answered my question.…
Ashraf Alshahawy
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