Questions tagged [igbt]
Insulated-gate bipolar transistor, voltage-driven power transistor with fast switching times
73 questions with no upvoted or accepted answers
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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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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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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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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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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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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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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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What is IC marked `40D12BI`?
What is the IC in the picture?
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Gate resistor of an IGBT
I have trouble choosing an IGBT gate driver for PMSM motor control application. We are planning to use a custom inverter with a custom PCB that has the FS150R12N2T7_B15 module. We do not know the ...
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Can I connect the isolated grounds of multiple DC/DC converters together?
I am working on a project that involves using isolated DC/DC converters to power gate driver ICs that will then switch on/off IGBTs. I have 9 DC/DC converters that will power 9 gate drivers each that ...
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Selecting a Gate driver for IGBT
I have trouble choosing an IGBT gate driver for PMSM motor control application. Can someone help me with the procedure? I went through few papers and I'm stuck with finding the external and internal ...
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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?
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IGBT C-E waveform
I am testing a full bridge converter, consisting of four IGBTs. I encountered a strange behaviour, when I load the bridge with an inductive load, in the C-E voltage waveform there is some kind of a ...
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IGBT trailing edge dimmer: the LED bulb only lights up around 40%, strange wave form before that, please advise what is causing that
I built a trailing edge dimmer with IGBT, and I am driving it using Raspberry Pi 3.
The circuit mostly works, but I noticed some strange behavior, that I can't put my finger on.
Please could you help ...
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IGBT modelling from datasheet
how to model igbt from the APT150GN120J datasheet.
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IGBT excessive Vge
I have a circuit with a PWM signal controlling the gate of an IGBT. It's a dual IGBT module, SKM150GB12. A relay delivers voltage to the collector, 2, and the power is delivered to a battery, Vbat+ on ...
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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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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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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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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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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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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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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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Significant voltage drop across IGBT
I'm using an IGBT in a wireless charger circuit as a swtich to send 'pulses' of power across the gap. I have 14V coming from the mosfet driver and I can see around 5v on the collector. I have the ...
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MOSFET Behavior During Pulsed Operation
I am trying to use back-to-back MOSFETs/IGBTs to isolate my pulsed supply from my load. In theory, I will switch on the MOSFETs, and the pulsed supply will be attached directly to the load (but not on ...
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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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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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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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236
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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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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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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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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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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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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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How do I make the circuit to sense the collector current for the FAN1100-F085?
I am trying to design an ignition coil driver using the FAN1100-F085 IC and a ISL9V3040x3ST−F085C IGBT.
I am having trouble understanding the datasheet when it comes to the current sensing. It says to ...
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IGBT and SiC MOSFET conduction losses
What is the actual reason behind IGBTs having lesser conduction losses than SiC MOSFETs? For the same application, I can see that an IGBT having the same power rating exhibits 10 times more switching ...
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Thermal Loss calculation of IGBT
I want to compute losses of an IGBT using datasheet information given by manufacturer. I want to calculate losses at 90 °C junction temperature while the information provided on datasheet is only for ...
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How to understand SUBCKT LTSPICE in order to modify an existing IGBT model to another from the same company
I am struggling trying to understand how a IGBT IKW15N120BH6 is implemented through a SUBCKT. The text file includes SUBCKT with functions and parameters, but it is not a typical construction of a ...
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IGBT won'tn turn on despite 12V Gate to Emitter pulse
IGBT is RGTH40TK65GC11
R1 and R2 are not populated
TCC4426 is a Mosfet driver ic.
Good 12 volt, 1 uS pulse on the Gate referenced to ground
I've tried several IGBTs with 12 volt or lesser drive - no ...
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Synchronous buck - "Inverse" current in the lower switch
I am referring to the typical synchronous buck architecture:
simulate this circuit – Schematic created using CircuitLab
The cycle starts with M1 conducting and inductor current increasing (I_L &...
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IGBT driver IC TCC4421 getting hot when connected to IGBT gate through a toroidal transformer
A strange overheating problem:
A TL494 PWM controller pulsating a TC4421 buffer IC, which is connected through a series 0.47uf capacitor to the primary of a toroidal transformer. The secondary is ...
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Can I drive only one MOSFET/IGBT in a DC chopper circuit using IR2112 driver?
I have a three phase inverter that is driven with 3 IR2112 drivers board and microcontroller.
I want to take advantage of the board and take two wires from these drivers pins to trigger one MOSFET/...
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IGBT conduction loss
I want to calculate heat sink thermal resistance of IGBT using parameters from a Datasheet.
To do that, I have to calculate the total power loss first. It is conduction loss + switching loss.
To ...
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Two switch forward converter - replacing BJTs for IGBTs in welder
So my friend has a broken TIG welder, an Lorch IT 250 GW to be specific. It's quite old, water cooled, has 250A continuous welding current and is powered by 3x230V mains. It was sitting for about a ...
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Series IGBT connection problem that the second igbt is always on
I'm tring to make fast turn-on circuit, so I use boosting P/S with 19V.
And main P/S is 2V with 5A.
The circuit is as follows.
IGBT is connected by series, and gate-emitter voltages apply square ...
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Will High Side IGBT Driver work with high ripple power supply?
The Vdrive voltage in the below circuit is supplied from rectified mains, including filter caps. The problem is that filter caps for this kind of application get expensive really fast, so I am ...
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IGBT and a high voltage circuit
I have never built such a system before and have already made several mistakes. I ask for help in drawing it up correctly so that it can start working.
I intend to control the power supply to coil L1 ...
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Input impedance of IGBT and power MOSFET
Between IGBTs and power MOSFETs, which has greater input impedance/resistance? (This is a question I was asked during an interview.)
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How to model switching losses in transistors in Simulink
I'm trying to model the switching losses of an IGBT in Simulink. I've researched however I can't find any literature on how to actually just model the switching losses?
I was potentially thinking ...