Questions tagged [igbt]

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

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37 views

Perfect AC sinusoidal wave dimmer with PWM from micro-controller

I am designing a circuit for controlling speed of a AC fan using Arduino UNO, this is how the circuit looks like . In this circuit the waveform generated for load is not perfectly sinusoidal,what i ...
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31 views

IGBT(Insulated-gate bipolar transistor) Latch-up

What will happen if the Parasitic transistor turn on?
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36 views

Why didn't the IGBT's output voltage change?

I have a lab experiment and we are trying to make IGBTs switch. Here is our experiment: In first situation, our values like that: 10kHz, 10V pulse Vcc = 15V Frequency=10k And with this setup, I can ...
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46 views

What are the important specs to look after for IGBT replacement?

I have a MC2100ELS-18W motor controller and after inspection found that the IGBT is shorted, the part number is IRGPC40K I suppose this is a discontinued part and I do not want to buy from China and ...
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39 views

220V IGBT welder model ZX7 inverter welder has no earth case ground

I would like to add an earth case ground to the unit. I am unsure where to connect the wire. One end to the earth pin on the connector but where inside the unit? Some of these are manufactured with a ...
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84 views

What is the explanation of non-zero VCE voltage of an IGBT while its gate is high?

While investigating a malfunctioning high power induction heater system (which constantly destroys its IGBT modules), I came across an interesting situation. Circuit Gate drivers are SKYPER 32 PRO R ...
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100 views

Rectifier circuit with unexpected output

I am developing a circuit using Proteus 8. My aim is to get a full wave (discrete) sine output to the load. I use an IGBT to switch the full wave rectified signal and get output in pulse form (purple ...
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34 views

Advantages and disadvantages of using igbt module with integrated rectifier bridge

What would be the main problems of using an igbt module with a rectifier bridge in an ac-ac converter project? Noise? Temperature? Does separating the rectifier bridge from the full bridge really ...
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45 views

Basics of high voltage DC motor driver with IGBT

I'm trying to drive 140V 4.5kW brushed DC pancake motor. I have to change motor speed and direction. All drive actions must be very smooth and sensitive. I drew a simple 4 quadrant IGBT controlled ...
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29 views

Passive-ish isolated IGBT driver with PWM design review

I would appreciate if anyone could give me some critique of my design proposal, is there any way it could be improved e.g. increased di/dt and dv/dt, sharper and more uniform gate signals? I am aware ...
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15 views

Calculation of Rated Power for IGBT Module

For an IGBT module with the following characteristics, how can we calculate the rated power? I mean how much is the rated power for this module?
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93 views

Ferrite core StepUP Transformer Design

So, I want to make a High-Frequency Ferrite transformer that can convert my 150-volt peak Square wave into 100000 Volt Peak. I am using UUR6440 Ferrite Core. Material is CF139 https://www....
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29 views

BLDC motor, typical maximum isolation voltage in DC

For one of 1/3 or 1/2 hp, can I aply a instantaneous 400VDC on it together with PWM (of around 50-200hz), safely? Do commom BLDC motors cumply with that spec?
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97 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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52 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
58 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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103 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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75 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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48 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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54 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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44 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
51 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
44 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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120 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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60 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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204 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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107 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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66 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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84 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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267 views

IGBT emitter collector spike overshoot

I am building a step up transformer for an output of 100 kV, 50 mA, at 50 kHz. simulate this circuit – Schematic created using CircuitLab For that I have planned to use a half bridge circuit ...
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151 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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84 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
138 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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116 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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196 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
861 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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116 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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63 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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31 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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124 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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308 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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51 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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39 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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58 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
395 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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189 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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440 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 ...