Questions tagged [igbt]

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

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20 views

Choosing emitter resistor

I`m not sure if this is the right place to ask but: I have fried ignition circiut which is based on IGBT. I narrowed that the transistor is gone along with the emitter resistor. The datasheet for the ...
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1answer
35 views

Assymmetrical vs symmetrical voltage blocking

I'm studing power electronics. There is property for BJT, GTO, IGBT which says: "blocks voltage symmetricaly" or "blocks voltage asymmetricaly" What does it mean? What is the ...
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1answer
45 views

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 ...
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23 views

Half Bridge Bootstrap configuration using IR2184 Gate Driver

I am planning on building a half bridge inverter for use as a tesla coil driver, using a couple of IGBTs, with gates driven by an IR2184 half bridge gate driver. According to the data-sheet, the ...
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67 views

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 ...
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1answer
45 views

High voltage, high current variable

I managed to make variable voltage and current for dummy load using IGBT with PWM control from Arduino, I plan to use the output as a variable power supply. The output from IGBT is a square wave so I ...
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1answer
52 views

Why are inverter modules extremely oversized in VFDs?

I was checking a faulty Schneider VFD (ATV312H037N4) which is rated for a nominal output current of 1.5 A. Turns out the rectifier bridge of the inverter module (FP10R12YT3) blew up and after reading ...
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40 views

IGBT gate resistance and power loss calculation homework

this is the question below What is meant by gate drive voltage and how does it affect my calculation? Also, how do I go about this problem after drawing the equivalent circuit? I don’t know which ...
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1answer
46 views

HV capacitor switch

I have in hand a 220V:600V isolated transformer and a HV bridge rectifier and I'd like to charge a 250uF capacitor with adjustable voltage from 200V to 500V. My idea is to use a switch between the ...
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1answer
42 views

How can this high-side IGBT drive work without exceeding maximum Vg-e

I was reading an article that creates a device that model the I-V curve using on capacitive loads. In the article they using IGBTs to charge and discharge the capacitor. This is the circtuit that ...
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112 views

Unknown logo on FGS25N120ANTD IGBTs. Which semiconductor manufacturer is this?

I bought 5 FGS25N120ANTD IGBTs from my local vendor a while back. I was unable to identify the manufacturer, based on the logo. Can somebody help me out?
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95 views

Electric board clicks and the output VDC is higher than the input AC

I've been working on fixing my treadmill's electric board in the past 2 weeks, and I learned a lot about electronics through this process. But for sorry I can't get it working, yet. I'm providing here ...
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1answer
56 views

How to find out the maximum Ampere that an IGBT can withstand [closed]

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 ...
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31 views

Control 3 phase load with microcontroller

I am designing a circuit to control a 3 phase resistive load (400V & 30A). The idea is to control the circuit with a microcontroller io. Since it will switch very often (1 Hz aprox), i decided ...
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2answers
159 views

IGBT won't turn off

I have built the following circuit as a static AC switch (no high frequency switching). The IGBT is a dual common-emitter module (https://www.infineon.com/dgdl/Infineon-FF300R12KT3_E-DS-v02_00-en_de....
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1answer
62 views

IGBT gate driver burned, why?

I am trying to use an IGBT module (dual IGBTs in common-emitter arrangement) as a static switch for 120VAC. I've done as much reading as I can, and I understand there are issues with losses and turn-...
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1answer
48 views

Replacing a shorted IGBT [closed]

Introduction to the problem While I'm using my treadmill, the house fuse breaker went down (Shorted). After I lifted up the fuse breaker & tried to use the treadmill, it showed me Err 02. My steps ...
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1answer
59 views

Will this IGBT switch operate correctly?

I am working to design a static AC switch using an IGBT module. The idea is that the switch will protect an inductive load from an adverse voltage condition (such as excessive under or over voltage) ...
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147 views

IGBT EMITTER COLLECTOR SPIKE OVERSHOOT

simulate this circuit – Schematic created using CircuitLab So, I am building a STEP UP transformer for output Volt 100 Kilo Volt,50 ma Output,50 Kilo Hertz Frequency.For that i have plan to use ...
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100 views

Verifying maximum switching frequency calculation of a hard switching IGBT

I have recently been working on a power H-Bridge meant to drive an inductive load in hard switching mode. I calculated the maximum operating frequency limitation due to maximum power dissipation of ...
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48 views

Eon and Eoff IGBT losses

I have read several documentations about switching losses in IGBT. Most of documents indicates to use Eon and Eoff curves to calcul the switching losses through the IGBT. Nevertheless, the Eon and ...
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25 views

Determining the worst case VCEsat

I would like to determine what is the worst case VCEsat at a certain collector current and a certain gate emmitter voltage of an IGBT. So I have to do a linear interpolation of the worst case output ...
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1answer
73 views

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-...
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1answer
63 views

What is the use of the diode connected anti parallel to the gate resistance in the general MOSFET/IGBT gate driver circuit?

From my limited knowledge, the only advantage of providing a parallel path through diode with a lower resistance across the main gate resistance is the high speed turn off of the power electronic ...
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1answer
117 views

Using a micro-controller to drive an ignition coil

I am building an Arduino/Speeduino based ignition controller and want to drive a 12V coil from a digital output of the ATMEGA2560. Below is my design for a coil driver using an IGBT (NGD8205ANT4G) ...
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1answer
291 views

Difference between the words 'die' and 'chip' [closed]

In some articles speaking about the IGBT power modules, we can see that the word 'die' has been used for calling the semiconductor component of IGBT device. However, other articles calls it 'chip'. ...
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60 views

Parameters for VAC 5046-X005 gate pulse transformer

I'm trying to parameterize this device to find a suitable equivalent. Trouble is, there seems to be no datasheet available, and one of the two secondaries are measuring open, so complete measurements ...
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1answer
57 views

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 ...
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26 views

Calculating power losses into IGBT formula at turn on integrating diode parameters

I have read the following application note ANIP9931E from INFINEON TECHNOLOGIES which deals with IGBT power losses : "http://www.ehu.eus/electronica-industrial/AmpliacionElectronicaIndustrial/...
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1answer
90 views

Is it possible to reduce the Miller's plateau voltage?

Consider the following circuit: Image source: Simplified Clamped Inductive Switching Model - Figure 3 from "Fundamentals of MOSFET and IGBT Gate Drive Circuits by Texas Instruments" I would like to ...
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1answer
219 views

Driving MOSFET/IGBT - Why Miller Plateau is a plateau?

I'm currently trying to understand what the Miller plateau is: what the different parameters that influence the Miller plateau are, when it begins, and when it ends. I'm reading document "Fundamentals ...
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48 views

IGBT chip metalization

Consider an IGBT chip within a power module. The top surface of the chip is often metalized by aluminum (with approximately 5 microns thickness) to bond some aluminum wires into the chip; I am hazy ...
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32 views

Bottom solder on the UPS PCB [duplicate]

Today i was looking at PCB of an old ups system. I noticed that there is a bottom solder pattern on the back side of the PCB, right under the IGBTs I believe that soldering the high power line on the ...
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36 views

Junction Temperature Estimation Error

When predicting the junction temperature (Tj) of semiconductor chips (for example IGBTs) by available thermal models such as FEM simulations, how much is the maximum permissible Tj estimation error ...
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53 views

Can I use a soft switching IGBT (FGA 25n120: given in specification) for my variable frequency drive power circuit (frequency around 10-20kHz)?

I am building a variable frequency drive from scratch. The design worked well with switching MOSFET. Now I need to increase the power output and DC bus voltage so that I would like to implement ...
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2answers
337 views

Is it possible to make an IGBT to work at duty cycles up to 100%?

I am designing an IGBT based chopper with single Low side switching IGBT (chosen low side switching because ease of driving the IGBT.) There are plenty of resources available for SMPS (buck, boost, ...
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130 views

H bridge circuit using FAN7392

YELLOW- LOW IN RED - HI IN BLUE - LOW SIDE OUTPUT GREEN - HIGH SIDE OUTPUT I have designed a H bridge circuit using FAN7392 & 25N120NDH IGBT. The voltage I want to switch for now is 24 volt ...
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3answers
273 views

IGBT Gate driver sink or source current

I will drive a load low side with IGBT. IGBT gate-emiter (Threshold) voltage will be 12 V. This voltage level is enough for my load current. I will use a gate driver. When ı search gate driver for ...
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1answer
147 views

When IGBT is off what is the leakage current between collector and emiter?

When ı saw datasheet of IGBT, there are two terms of about leakage current between collecter and emiter. But ı can not be sure is these terms are about leakage current? These terms are Ices and ...
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1answer
62 views

DC Chopper Operation in SMES Design

I'm reading a paper on a superconducting magnetic energy storage (SMES) power control system. One large superconducting inductor (L1 in the figure below) is charged up by a 10kA power supply. Once ...
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2answers
332 views

n Gate to source capacitor in gate drive?

I'm designing a gate drive and I saw in a reference design this circuit, what would be the explanation for placing a capacitor between gate-source of the MOSFET (or IGBT)? I've read that a resistor is ...
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32 views

Infineon IPOSIM tool for IGBT thermal loss calculations

I used the infineon IPOSIM power tool for simulating a motor drive for my required conditions and got the results for a custom input drive cycle. The results were given as power dissipation per IGBT(...
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1answer
80 views

Can a 3 phase IGBT based front end converter work without line reactor?

I have been working on developing a 3 phase active power filter, which has a 3 phase IGBT bidirectional converter. I have been able to develop APFC (Active Power Filter Converter) with the line ...
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43 views

IGBT confusion with determining Ic

For this IGBT I-V curve say I have a Vge of 10V and no biasing resistor on the collector with 5 Volts being supplied by some supply providing up to x watts. According to this I-V curve this should be ...
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63 views

Ringing issue in high-side IGBT connected transmission line

I am trying to charge a transmission line (Z0=4.4 ohms, propagation delay=1.4 ns) by a HV (1-1000 V, 600 mA) power supply through a 1700 V rated IGBT (S1). The charged transmission line gets ...
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4answers
85 views

Isolated Power Supplies for Inverter Gate Drivers

I am using a 3-Phase IPM IGBT Inverter Module in motor driver. This module has built-in gate drivers which require 4 Isolated power supplies for their operation. In all I have to design 5 Isolated ...
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1answer
59 views

Intelligent IGBT Module for Motor drive [closed]

I am looking for IGBT module for motor drive.. Approx. 50A, 1200V rating. 7 Pack module, Including Inverter + Brake circuit + Built-in drivers For this I have found a module and it's datasheet ...
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1answer
233 views

high side driver failure

I am having 100% failure rate trying to get this high side driver to operate. The failure happens as soon as the 5v logic signal is turned on. I have had straight shorts from VDD to GND, and I have ...
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1answer
80 views

Zero Voltage in a power semiconductor chip

In an ON-mode silicon IGBT chip operating within a real power module, is the collector contact fixed at 0 V or emitter? What about Power SiC MOSFET? enter link description here
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2answers
777 views

IGBT transistor with auxiliary emitter

Recently I discovered, that some IGBT transistors in IGBT modules have the second pin for an emitter, called auxiliary emitter. In the picture above 2nd and 4th pins are auxiliary emitters. This is ...