Questions tagged [igbt]
Insulated-gate bipolar transistor, voltage-driven power transistor with fast switching times
324 questions
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Gate half open on MOSFET or IGBT easily kills transistor on high power
I noticed that the power transistors DG50X12T2 (rated for 1049 W @ 175C) but also the FDL100N50F (rated for 2.5 kW) can easily conduct such amounts of power when fully on. But even when they are on a ...
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The on-off time, peak voltage and peak current of the IGBT dual-pulse experiment
When conducting the IGBT dual-pulse test, which simulates the inter-phase short-circuit time of IGBT, that is, the second type of short circuit, and under the condition of a large load and large ...
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Which thermal resistance should I use to determine thermal dissipation of this IGBT? [closed]
I calculate losses for IGBT = 16 W.
Which thermal resistance should I multiply it by in order to know the temperature
Tjc = 0.34 C/W
Tja = 40 C/W
Why this big difference?
If I don't use a heat sink ...
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Inserting LEDs in MOSFET/IGBT Gate Driver Circuits
I intend to drive my MOSFETs in the following manner:
Buffer IC (NL27WZ16 or NL7WZ16) will convert the 3.3 V PWM to a 5 V PWM which will then be given to 1ED3142MC12H. All the LEDs (LED, +15 V LED, ...
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Could the freeze state of the IR2214 destroy IGBTs?
The IR2214 is the driver I've chosen for my VFD that will drive an Induction Motor. One thing in the datasheet that caught my attention was that in multi-phase configuration, when one gate driver ...
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help me to identify MOSFET make for find equivalent of it or suggest alternative part -SM65R280,PAKAGE-TO-252,part is obsolute so,find similar part [closed]
MOSFET make for find equivalent of it or suggest alternative part -SM65R280,PAKAGE -TO-252, its use in SMPS 150W design use in ac to dc power supply.
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Indentify MOSFET or IGBT, DPAK, Fairchild 5503GM?
Does anyone know about this MOSFET or IGBT. It has been marked F 5503GM?
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Power switches to replace Mechanical Relay in the HV pulse tester setup
I have a surge tester setup that uses a high-voltage power supply (up to 1000 V) to charge a non-polarized capacitor bank using SW1 to energize Relay 1 in Image 1. The bank discharges into a waveshape ...
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Reference ground plane in half bridge IGBT
I have this half bridge made with IGBTs
The driver sections are isolate from each other. In a current version of the pcb I didn't use any reference plane under the IGBTs (I used only local ground ...
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IGBT resistive load turn-off time anomalously long
My test is: IGBT OFF and ON Time.
I measured the IGBT on-time between the drive signal and the collector-emitter voltage, less than 1 µs.
I measured the IGBT off-time between the drive signal and the ...
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Gate protection against undesired switching on
I'm designing a Marx generator with a solid state switch. I'm using IGBTs.
Each IGBT has a 160 µF capacitive load.
At the moment, I'm testing a generator that is powered with a 1kV and has three ...
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Simulation of AC-AC Buck-Boost converter on Simulink
I was working on this college assignment to simulate AC-AC Buck-Boost converter based on the following reference "A single‑phase direct buck‑boost AC–AC converter with minimum number of ...
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How to choose the IGBT and MOSFET
I am making a converter now, and I would like to know if you have any recommended information on how to choose IGBT and MOSFET to reduce losses and costs and improve efficiency.
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Is there at least one commercial off-the-shelf P-channel IGBT?
I was expecting IGBTs to come only in N-channel varieties, but I figured I'd check if there are P-channel IGBTs out there. I can't find any, but neither can I find any statements by the IGBT ...
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Operation of IGBT circuit at the output of strobe flashers
How the xenon lamp's light intensity changes from full power to lower powers: 1/2, 1/4, 1/8 and so on. The output circuit uses an IGBT like this application example from CT40KM datasheet
A bit of ...
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IGBT Breakdown Voltage and Leakage Current
An IGBT datasheet (https://www.infineon.com/dgdl/Infineon-IGB30N60H3-DS-v02_03-en.pdf?fileId=db3a30432a40a650012a46d3374d2b96) states that the minimum collector-emitter breakdown voltage V(BR)CES is ...
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Potentiostat for 5-6kW supply
I'm making a power supply with output around 2kV which can output 2-3 Amp of current. I want to use a potentiostat to keep voltage constant at output but I don't know how can I build it for such high ...
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Using IGBTs for controlling heating loads
I know traditionally antiparallel connected SCRs (Thyristors) are used in phase-angle control mode to control the heat delivered to an industrial furnace or to control heating loads. Can the same be ...
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Is an IGBT comprised of many micro sized transistors, or is it just a single device in itself?
Below is a typical IGBT structure that we studied in the regular course.
Someone told me that there are thousands of small transistors that make up an IGBT. As I understand it, there are a number of ...
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IGBT gate voltage spike during turn-off
I'm getting a big voltage spike on the gate of an IGBT I'm using to switch high-current and high-voltage as shown in the images, and I wanted to ask what you all think might be causing it. I was ...
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Active Miller Clamp vs "Bipolar" Gate Driving (e.g. VGE = ±15 V)
I've been designing an H-bridge inverter (~150 kHz and ~20 kW), and notice that many IGBT half bridge modules (e.g. this one) recommend a VGE of ±15 V. My understanding is that negative gate drive ...
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Why are the IGBTs of a full bridge inverter of an ultrasonic generator getting hot even at low current (1 A)?
I designed an inverter to use an ultrasonic generator for an ultrasonic homogenizer.
The problem is that even at low current, the switches get abnormally hot(specially two of them Q3 and Q4):
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IGBT with double emitter
I have this circuit in the photo that has two transistors that appear to be IGBT, but they have two complementary emitters, and apparently the floating collector. What component is this, I tried to ...
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IGBTs fail after high current, high voltage switch, despite being lower than absolute maximums mentioned in datasheet
I'm using FGH60N60 IGBT as a switch. The circuit is basically a capacitor-discharging circuit. I have a 10 mF capacitor charged to 310 volts and connected to 2 Ω of load via this IGBT (I connect 4 ...
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Three-phase IGBT inverter - Switching Loss Model
I aim to model the switching losses in a three-phase IGBT inverter controlled using Space Vector Modulation (SVM). I intend to use the approximated formula found in this paper, equal to:
$$P_{sw}={1\...
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Understand about IGBT and MOSFET
I'm studying about IGBT and MOSFET devices but information on the internet is difficult for me to understand, especially for their important properties.
Please help me to summarise this content or ...
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How do I test a MOSFET/IGBT for its maximum current and maximum voltage mentioned in the datasheet practically?
I am using an IGBT from Infineon (IGW25N120H3FKSA1). The datasheet mentions that the absolute maximum ratings for the IGBT are Vce(max) = 1200 V and Ic(max) = 25-50 A (depending on temperature). How ...
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Reconciling High Drain Voltage with Typical V_BE Drop in nMOS+PNP IGBT Configuration
I'm examining two design methodologies for IGBTs (Insulated Gate Bipolar Transistors) and have encountered a puzzling issue regarding the drain voltage in the nMOS part of an nMOS+PNP IGBT ...
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IGBT breakdown with induced transient voltage
I have a circuit with four IGBTs model IXYT25N250CHV up to 2.5 kV for a maximum working voltage of 1.5 kV
Each IGBT is used to charge a capacitor from a photovoltaic (PV) system at different voltage ...
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Induction Cooking Power Stage and EMI Filter Schematic
Recently I am planning to build an induction cooktop using half-bridge resonant topology. For a start, I took a look into ST evaluation board for induction cooking and wondering some part. Here is the ...
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Proper IGBT driver circuit for power inverter
I've examined IGBT driver in inverter in power generator (same model as presented here https://www.youtube.com/watch?v=3owRSqmz2JQ). Inverter topology is H bridge with two chokes in series with 230V ...
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Why gate drivers have series resistors on gates?
Although gate drivers are often used to interface low-voltage logic with high gate thresholds, it is my understanding that their primary function is to ensure fast gate switching by supplying high ...
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Difference between IGBT and FET+BJT
What are the practical differences between a true IGBT and a combination of FET and BJT, apart from a more efficient production and packaging? Can I obtain a device of comparable qualities to IGBT if ...
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Is it possible to make a halfbridge coilgun with high side IGBT and low side SCRs?
In a rather simple coilgun, the problem of freewheeling current from the coil is solved with a diode in parallel with the coil.
The energy of the reverse current is wasted this way and even slows the ...
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IGBT pulse max current
If in datasheet it reads that an IGBT can handle a 1200A current pulse for 1ms, and can operate at 500A max at 25C and 320 at 90C, how would I calculate what kind of pulse can it handle for 2 or 3 ms? ...
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Could an IGBT gate driver be used to drive a SiC MOSFET?
Can we use a single channel HV IGBT gate driver with galvanic isolation which is previously mounted to derive a 1200V IGBT for 800V inverter application? Can the same gate driver drive a 1200V SiC ...
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How to switch a 200 Vpp AC signal @ 2000 Hz in under 1 millisecond?
I want to switch a ~120 V AC signal with a frequency of up to 2000 Hz.
For my application (driving electrolumnescent wire) it is important that the switching duration is not higher than about one ...
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Battery Charger - Design of Circuit
Im Designing a Lead-Acid Battery charger, dont't needed that this charger it's the most sophisticated one.
As you can see in the attached image, It only consist of a power transformer, a ...
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Can I control IGBT linearly with gate voltage?
I want to make a dummy load using IGBT. Is it possible to control the Ice (collector to emitter current) using the gate voltage? It would be really great if it is possible to explain the answer. The ...
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THT power transistor clamp mounting
I have a question regarding mounting THT power transistors (TO220, TO247...). I am building a output full bridge for a welder and I thought about not using PCB at all for the power terminals (D,S). It'...
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How do you size a resistor when the current and voltage flowing through it are impulsive?
Given a 33 Ω resistor, I need to size the power it can handle. The resistor is in series between a pin where a SPWM voltage is applied and the gate of an IGBT.
In the following photo: blue is the ...
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Half-Bridge inverter with IR2110, high side control signal diverges
I am designing a single-phase half-bridge inverter with SPWM modulation on LTSpice, the SPWM control signal is 10 kHz and the reference sine wave is 50 Hz.
Initially the simulation seems to work, but ...
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Why does the boost converter I made not produce an output voltage that matches the simulation I did?
First, this boost converter uses open-loop control.
Second, the gate driver for the MOSFET IRF540, TLP250 IGBT driver as a high side MOSFET/IGBT driver is isolated.
Third, the specifications of the ...
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Looking for help identifying IGBT [closed]
This was in my DC stick welder. There are two but they're both blown up.
This one has some readable letters on it still. I can find many similar ones but none match the bottom number. Any help is ...
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About Intelligent Power Modules for H-Bridge Configuration
For some days I have been searching for some kind of compact, easy to use and well powered modules that can be drive BDC motor using H-bridge configuration which gate trigger signal from MCU will be ...
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IGBT driver circuit protection confusion
I was reading a paper regarding the IGBT driver circuit based on M57962AL IC. I haven't found better information regarding the use of this IC in the datasheet therefore I had to read this. I am ...
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Coupling heatsink RC network to MOSFET's Cauer circuit
I am trying to understand simple RC thermal simulation to analyse the temperature rise in Rohm a 1200 V N-channel SiC MOSFET SCT3040KR.
RC Cauer parameters are as depicted in the LTspice circuit ...
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What kind of component this is (ST e3 ZOM Y734)?
please help to identify following electronic component from the image:
It is clearly seen all symbols:
ST e3
ZOM
Y734
So it's definitely "STMicroelectronics&...
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RC Snubber Design Hint for 3 phase AC-AC PWM Chopper
Im trying to design a 3 phase Ac-Ac Pwm Chopper, I'm having difficulty designing the snubber network for the mentioned topology.
Now I tried testing this circuit on bench , with my IGBT snubber values ...
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Are the full bridge rectifier on a IGBT pack switching, fast or Schottky diodes? [closed]
In a skiip24nab126 IGBT pack for motor VVF drives: are the 3 phase full bridge rectifier diodes fast Schottky or switching or just normal / common diodes like 1N4007? Does the rectifier need to switch ...
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