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Electrical Engineering

Questions tagged [igbt]

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

121 questions
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14 views

Ic and Vce equations of IGBT

I know in IGBTs while operating, parameters Ic (collector current) and Vce (collector-emitter voltage) are Tj (junction temperature) and Vge (gate-emitter voltage) dependent. Is there anything else ...
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1answer
21 views

Calculation of Vce from Ic-Vge Characteristic

We have found the Ic-Vge (collector current vs gate-emitter voltage) characteristic of an IGBT device as shown below at a high Vce (collector-emitter voltage) value (here 20V) from the datasheet (...
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0answers
81 views

IGBT failure and protection

I have a 3-phase bridge rectifier (shown below). I am using an IGBT (STGE200NB60S) to limit the inrush current from the capacitors at start up. I also added the NTC thermisters to help with the inrush ...
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2answers
29 views

Ic-Vge IGBT Curve

In the figure below, presented in the manufacturer datasheet, you can see the Ic-Vge curve of an IGBT device. As mentioned, it has been drawn at Vce=20V. What does this equality mean? Can we have such ...
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1answer
66 views

Is this the correct way to calculate IGBT power loss?

I am having trouble obtaining the power dissipation of IGBTs. It does not have a buit in diode and it isn't driving an inductive load. So I read in an application note that IGBT power losses are ...
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1answer
109 views

How does carrier frequency and pulse width modulation in a VFD work together to control AC motor speed?

There is a lot of online information about this but there is also a lot of contradictory information. What is carrier frequency exactly and does it stay the same or does it vary? I understand the ...
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0answers
21 views

High Speed Piezoactuator Driver-Unexpected (Low) Voltage Output

I'm working on a project that requires charging and discharging a piezoactuator (150V, 1.5μF) extremely fast, IE total slew time allowed ~50μs (so somewhere around a 11A pulse). My background is in ...
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1answer
72 views

IGBT contactor design

I found this circuit in an older post. I was thinking about using this in place of a contactor to break under load. The load would be at 500V 300A DC. There would be overcurrent protection in line ...
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1answer
61 views

on-state voltage

I am trying to study an ever-on IGBT. in other words, IGBT is tried to be on in a long time. To this purpose, a +15V constant dc voltage is applied to the gate-emitter. But, when connecting a +2V ...
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1answer
76 views

How to find relationship between switching energy loss, temperature and current in an IGBT

I am calculating the losses of an inverter in Simulink. I used 'IGW25N120H3' IGBT for the inverter. In the datasheet, they have mentioned switching energy losses for 2 different temperatures and from ...
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1answer
60 views

Select bootstrap capacitor value too high

What happen if we choose bootstrap capacitor value too high in high side gate driver applications? Can it be harmful for MOSFET/IGBT or it is just not important?
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0answers
49 views

Delamination in Pb-free solder joints

It is worth knowing that two material types are commonly used for soldering power semiconductor chips (IGBT, MOSFET, ...) to DBC substrate inside power electronics modules. They are Pb-rich and Pb-...
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1answer
90 views

IRGB14C40L and MC33153

I want to drive a power ignition IGBT (IRGB14C40L), and for this a driver MC33153 has been chosen. I have several questions about my supposed schematics, shown below: 0) This design will (allegedly) ...
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2answers
75 views

IXDP 20N60B IGBT reversed biased conductive

I am using the IXDP 20N60B IGBT as an AC switch. This IGBT has no internal diode. When the Gate Emitter voltage is ~10V the device is on and conducts in the forward biased region as expected, shown ...
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0answers
60 views

Is this a reasonable schematic to drive an IGBT?

I'm using a gate driver to turn on an IGBT from an isolated power supply. The part I'm most confused about is whether it's necessary to ground emitter to the power supply. I'm also fairly confident ...
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78 views

Failures on underside layers of a chip in IGBT power modules

Does somebody know how I can detect a layer of IGBT modules in which a thermal failure, e.g., voids, cracks, delaminations of solder joints, has taken place? We know there is fatigue in both solder ...
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1answer
83 views

IGBT Rectifier Gate Voltage

I have a 3-phase bridge rectifier which uses IGBT's shown in the image below. The circuit works perfectly and the voltage on the output (unfiltered) is exactly as expected. However the gates are ...
2
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1answer
360 views

Difference between Vth and Vge?

What is the difference between the threshold voltage (Vth) and gate-emitter voltage (Vge) for IGBT devices? How can I calculate Vth of an IGBT chip?
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3answers
78 views

What specifies how much energy can be disspated in an IGBT when switching off?

I am driving an inductive load with an inductance \$L = 500\mu H\$ with a steady-state current of \$I = 300A\$. I would like to switch this current off quickly, and I plan on using an IGBT to do so. ...
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0answers
86 views

Why if I change the sample time in Matlab/Simulink modifies results in a huge way?

I'm having trouble with the circuit I'm studying but in order to modify some values, I want to get out this question of my mind. * Example 50e-6 * Example 50e-7 * Example 50e-8 I use a S-Function ...
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1answer
52 views

Electrical Conductivity of SAC solder

Can anybody help me find the electrical conductivity of SAC 305 (96.5Sn3Ag0.5Cu) solder? It is the most common solder in semiconductor IGBT/MOSFET power switches. Many thanks and best regards,
1
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1answer
187 views

active miller clamp and desaturation detection in mosfet drivers?

Newer mosfet/IGBT gate drivers like 2ED020I12FA and TD352 have features called : Active miller clamp and desaturation detection . However the example circuits are shown with IGBTs only. So my ...
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45 views

Why Fault pin of IR2136 gate driver is getting low at high voltage?

I am implementing a variable frequency drive for a three-phase induction motor. I used IGBT module fs25r12w1t4 with gate driver ( three phase, six Channels IR2136). When I increase the voltage, the ...
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2answers
79 views

What is the difference between high and low frequency IGBTs?

I would like to know which parameters make the difference between a high frequency IGBT and a low frequency IGBT. For example, I read the AIKW50N65DF5(15 - 120kHz) datasheet and the AIKW50N60CT(0 - ...
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1answer
62 views

why fs25r12w1t4 infineon module is burnt out when high current is paassed through it?

I am implementing a VFD for Induction motor drive. I have used fs25r12w1t4 Infineon IGBT module ( 1200v 25A) with gate driver 6ed003l06-f2. It always burnt out when I passed 2A current. What may the ...
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2answers
137 views

TTL or IGBT Output - software switchable

I am creating a circuit which will be used in an Engine Management system. Its function is to: a) either drive a 12v ignition coil directly (using a normal IGBT) b) or if required, offer instead a ...
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2answers
64 views

Three phase rectifier heatsink

I need to choose a heatsink and a fan for cooling a three phase rectifier. Let's say that the total power dissipation is 1.8kW and that the rectifier is made of three half bridge IGBT/diode modules ...
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2answers
337 views

IGBT H-bridge failure

I am using Infineon's IGBT - IKW50N65H5 and IKW50N65F5 for a H-bridge inverter. The DC supply to the inverter is the line supply of 230VAC with KBPC5010's full wave rectification. The bridge was being ...
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0answers
171 views

Can you drive a logic level IGBT directly from a micro controller?

My question pertains specifically to devices like an EcoSPARK®2 400V, N-Channel Ignition IGBT. I'm investigating the requirements for building an electronic ignition system for a go cart. This would ...
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0answers
42 views

Pspice Model Editor Error: Extraction Stopped

I use some IGBTs. Their spice models are available but not suitable for my simulation. I have to create my own model according to datasheet informations. Pspice Model Editor is a good option but I ...
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0answers
28 views

Why does the IGBT type PT have a smaller Vce(on) and bigger current tail than type NPT?

My question concerns the additional buffer N+ layer in PT IGBT structure. This layer permits to reduce the N- thickness and also play a role as recombination region for electrons of N- region and ...
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1answer
280 views

IGBT failure on Inverters [closed]

We were using Mitsubishi IGBT with the code CM400DY-24NF but had to change to Fuji IGBT 2MBI450U4E-120. These IGBTs are used in inverters and the inverters are used in solar energy applications and ...
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2answers
64 views

Repairing failed board trace

I am replacing some igbt transistors on a circuit board from my Samsung TV. While de-soldering one of the 4 components one of the traces from the gate lead fell off. I am looking for the best ...
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0answers
95 views

IGBT SOA rating vs. Short Circuit rating

I have an IGBT (with integrated anti-parallel diode; forgive the BJT symbol in the diagram) that is switching an inductive load with a ~300 Vdc supply. The threshold voltage is ~5V and I'm driving it ...
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1answer
256 views

IGBT Gate driver design question

High! I'm looking up some Tesla Coils on internet and I have a question about a particuliar part of the schematic. In the IGBT gate driver circuit, there are resistors and diodes which I'm unable to ...
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2answers
392 views

IGBT-based capacitor charge transfer and thyristor-based capacitor discharge

simulate this circuit – Schematic created using CircuitLab I am designing a circuit to provide a couple of strong and fast current pulses (~1000 A, more current is better, ~100 us, half-sine) ...
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2answers
229 views

What are the parameters to consider while selecting MOSFET or IGBT for Inverter and SMPS Design [closed]

I'm working on a project to design Buck Converter with following Criteria Vin: 4.5-60V Vout:8-15V Iout:6-12Amps
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1answer
41 views

Igbt switching for magnetic coils

I am constructing igbt based switching circuit for switching multiple coils with a proper time delay for a scientific experiment. I need to simulate the circuit before doing on board. I am using ...
0
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1answer
66 views

Thermal design for an IGBT

I am working on a project that involes an inverter made with IGBTs. The device I selected for builing the H bridge is this: STGW60H65DFB. One of my roles in this project is also to select a suitable ...
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2answers
121 views

Dual gate driver inputs/outputs tied together

I'm using an IR4427 dual low-side gate driver to drive a single IXEL40N400 IGBT. Since I'm not using the second side, I'm considering tying its input to the active input and output to the active ...
0
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1answer
508 views

Turn-on resistance - IGBTs

I would like to find out the internal resistance Ron of this IGBT device : http://www.infineon.com/dgdl/Infineon-IHW50N65R5-DS-v02_04-EN.pdf?fileId=5546d461464245d30146ae23713f0115 The Ron ...
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0answers
271 views

Who do IGBT rectifiers have floating gates (unlike MOSFET rectifiers)?

When I search Google Images for "IGBT rectifier", I notice that they all appear to have floating gates. But don't IGBT's have gates like the ones on MOSFET's, in which it's insulated from the other ...
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1answer
363 views

DC bus inversion to 3 phase AC modified sine wave using IGBTs

I'm working with a variable voltage inverter. I have 3 phase AC voltage coming in at 480V RMS line to line. It hits a full wave SCR front end, has a DC bus link, and is inverted with IGBTs to created ...
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1answer
28 views

Does a datasheet paramaters of an IGBT gives you a DC , AC rms or an average value

For an example if you look at this datasheet for an IGBT datasheet , It has values for 1) Vces 2) Ic 3) VGes ect. Does these values give you a DC, or AC RMS or an average value?
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4answers
413 views

How can I reduce the current draw for a dimmer with a triac for an immersion heater?

I've been working on variable control for a immersion heater. The problem is that the heater consumes a lot of current, about 10 to 15 Amps. I already have to circuits to control it, the problem is ...
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0answers
53 views

212v AC generator power & IGBT phase convertor senses over voltage and trips off - why?

Gentleman : This new igbt phase converter has voltage range 186v - 260v . 212v (L1 106v & L2 106v / L1 & L2 212v) input trips converter off with over voltage code displayed. The ...
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2answers
306 views

Input capacitance IGBT and MOSFET

I measured the input capacitance of a MOSFET and found it was greater than an IGBT. Why is this? Is it due to the Miller capacitance seen in a MOSFET?
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3answers
260 views

Resistor values for a Voltage- Controlled Current Source Circuit

simulate this circuit – Schematic created using CircuitLab Hi Folks, During my bachelor thesis, I am learning IGBT gate driver cricuits. I am struggling with understanding the following ...
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3answers
477 views

Transistor Amplifier Classes

There are many different power amplifier classes for transistors, like: A, B, A/B, C, D, etc. But as I searched through the internet and I only found those classes referring to BJTs. What about JFETs,...
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0answers
165 views

mazzilli zvs both igbt failure

I try to build mazzili zvs with 2 IGBT toshiba MG75Q2YS40 75A 1200v. For the each fast diode, I use 2 pieces DSEC60-06 A 600v 30A in series to get 1200v. for this, I use 2 power source: 12 volt for ...

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