Questions tagged [gate-driving]

MOSFET and IGBT gate driving

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3answers
380 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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2answers
774 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
179 views

MOSFET bootstrap capacitor

I'm using a N channel gate driver with a bootstrap diode included, so I just need to add the capacitor. The FETs will be powered from a 3S lipo pack (12.6 to 9.0v) so I was wondering if I need 30v ...
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2answers
69 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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2answers
218 views

Mosfet driver(Pin configuration)

I would like to know what Vcc(supply voltage) and Vin(input voltage) do on Gate driver. Here is the datasheet. http://www.ti.com/lit/ds/symlink/tps2813.pdf
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1answer
54 views

Tuning a potential sensor using a source-follower MOSFET

I am interested in building a simple but sensitive setup that would allow me to detect small potential changes (adsorption of ions) on the surface of the gate of a MOSFET - what is commonly referred ...
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1answer
114 views

Gate Drive Resistor size and/or Gate Driver IC

I am working on a design for a 16 channel LED driver design. at the moment the basic design is based on three main components: NCP781BMN050TAG Voltage regulator PCA9685 I2C PWM Driver CSD19534 MOSFET ...
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1answer
113 views

Simplest phase-shifted gate drive for two mosfets

I have two inverters, driven by two IRF530 mosfets. I need to drive them with a specific phase shift. What is the simplest, most basic way to do it, for simple prototyping? (I am neglecting PWM ...
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1answer
157 views

GTO Driver circuit

i am new to power electronics.I am working in project where input is pulsating dc and i have to control it, i try with scr but we can control only on of scr not off so in some case the cycle cut ...
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1answer
73 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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1answer
99 views

3KW SR motor gate driver and simulation questions

I'm designing power electronics for 3-phase 3KW SR motor by using power MOSFETS of rating 600V. To drive the gates of these MOSFETS, I'm using IR2183 gate drivers, one per each phase. The DC voltage ...
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1answer
273 views

Can MOSFETS work as perfect switching voltage dividers in practical?

Hi, I tried this circuit both in simulation and in practical manner. Below i used a gate driver IR2112 to drive the gates of the two mosfets, which boosts my PWM 5V amplitude signal to PWM 15V. My ...
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1answer
55 views

How to power several gate drivers with as few power supplies as possible?

I am designing a 3-phase three-level NPC converter (same type as: https://trinhquocnam.files.wordpress.com/2015/12/t-npc.png?w=767&h=434). The box this converter will be placed into is fed with ...
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0answers
56 views

Alternate uses for Gate Driver - Driving a Load without External IGBT or FET

What issues would one encounter by using a gate driver IC to directly drive a load instead of using it to drive transistors? For consideration would be the very affordable Infineon 2EDN752x series ...
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0answers
51 views

Sizing the input current of a isolated standalone MOSFET gate driver for a stable output

After a suggestion from my previous question I'm planning to use this Photovoltaic isolated MOSFET gate driver to trigger a trigger input of this DAQ. It seems these devices do not require an ...
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0answers
111 views

Inverter Design - High Side MOSFET - Slow Switch Time

I've posted previously on a similar issue which can be found here Overview: My design is a 3 phase inverter with: MOSFETS are STF10N60DM2 Gate Driver is 6EDL04N06PT I'm using only a single high ...
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0answers
158 views

Three phase motor driver DC link, DC bus capacitor values

I am designing a motor driver for a three phase brushless motor and have been looking for a capacitor value for the DC bus of this circuit (C1). Most of what I have found when researching deals with ...
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0answers
73 views

Logic gate directly driving power MOSFET

Art of Electronics, 3rd Ed, pg. 164-165 give an example of naively using a 4000-series CMOS logic gate to directly switch a power MOSFET, disregarding the significant gate current required to charge ...
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0answers
204 views

Problem with ATmega328P when used with DRV8302 gate driver

I am developing a motor controller for a 48V BLDC motor. For this, I am using the ATmega328P microcontroller in combination with the DRV8302 gate driver from Texas Instruments. It uses a simple ...
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0answers
590 views

High- and low-side MOSFET gate driver bootstrap circuit

I am trying to create a simple buck converter on a breadboard using this topology: I am familiar with the theory of this circuit and believe I have connected everything correctly. The gate driver I ...
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0answers
175 views

Using 1:1 Transformer for High Side Switching

I'm working on a 2-sw Forward Converter with isolated input and output. The design is complete on paper, but I still have a problem in my head: High side switching. The question is, can I drive the ...
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0answers
155 views

Parallel high speed and high current mosfets

In order to speed up switching times and reduce power (I2R) losses, is it worthwhile to put a fast switching (but high RDSon) FET in parallel with a low RDSon (but slow witching and high Qgs) FET? ...
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0answers
925 views

MOSFET Without Gate Resistor is Failing

I have two MOSFET circuits; one is working and the other fails and I'm not sure why. I just want to turn on/off the LED, nothing special, no fast switching. Below is the working circuit (series gate ...
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0answers
489 views

Why are the dead-time in IRF boot-strap gate driver ICs relatively long?

Why are the dead-time in IRF gate-driver ICs like IR2109 relatively long?1 I can be interpreting the data-sheet wrong too. The IR2109 has a dead-time of 540ns. For IGBTs that dead-time are not ...
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0answers
35 views

When I use two IR2110 for full bridge, dose supply voltage of IR2110 need isolation?

I found the question that explains logic supply voltage (VDD, VSS) and gate drive supply voltage (VCC) are not isolated. And according to datasheet reference circuit, it seems to be non-isolated ...
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0answers
22 views

Why Dspic304011 Controller's PWM stucks to 50% duty cycle when DC link Voltage is turned onn before the gate votlage turned onn in SPWM inverter.?

I have implemented SPWM inverter that take input from grid (230V AC) and convert this to DC link voltage 320V and this DC link voltage is converter to desire frequency. The gate driver IR2136 is used ...
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0answers
41 views

Mosfet Gate Pull-Down and Gate Resistor Failure

I'm trying to make an inverter which has a dc bus of 350V and output of 220V(spwm). The problem is I've run the circuit two times and in the first one the gate resistors explode and in the second one ...
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0answers
72 views

Driving of a MOSFET using optocoupler in 180-to-24V buck converter

i have a problem with driving a MOSFET in a converter, let me explain. I need to build a Buck Converter with the following requirements: Input 180 V (From a 120 VRMS rectifier circuit) Output 24 V No ...
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0answers
46 views

hump on rectified signal and inconsistency on gate signal

Following is the image of my circuit, I am working at the moment. This is not my own circuit but I am trying to understand and work on it. Following is the signal I am getting at Gate2. What could ...
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0answers
21 views

drain voltage of JFET (N type depletion)

I am trying to figure out the drain voltage of the JFET (N type depletion) ATF33143, given the architecture shown in the image below. I understand that it's basically a voltage divider and that \$ V_{...
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0answers
87 views

NCP3420 failing in buck converter

I designed a constant current buck DC-DC super-cap charger with the NCP3420 as a dual MOSFET driver. The current is hysteresis controlled and the disable and PWM lines are pulled low on power-up. The ...
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0answers
755 views

How can I simulate a Infineon IR2183 gate driver in LTspice?

I'm making a boost converter in LTspice, initially with ideal switches and comparators, but now trying to use realistic components. For the MOSEFT I just picked one from the available ones that has a ...
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0answers
31 views

How can I drive a bridge with three states and two high-side switches?

I want to drive a configuration similar to the one presented in Figure 1 of A novel tri-state boost converter with fast dynamics, but use a MOSFET instead of the diode for efficiency. I want to put ...
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0answers
106 views

multiplying PWM signal

I have a 36 mosfets to drive them with a microcontroller (of course not all at the same time) and a gate drivers but i'm trying to figure out a way on which i minimaze the number of gate drivers as 36 ...
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0answers
77 views

How to calc isolated DC-DC rating for Gate Driver which drives 5 MOSFET in parallel?

I am Kalpesh. I am using FOD8316 gate driver to switch IRFP4668 MOSFETs and the DC-DC used for FOD8316 is MGJ2D121509SC which provides +15VDC/-8.7VDC output vtg with current rating of 80mA/40mA ...
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0answers
243 views

MOSFET high side gate driving without driver

I'm building an H bridge form IRF3205 N MOSFETS to drive a TX coil for Wireless power transfer. I want to make the high side switching without a driver, instead I'm using a somewhat similar bootstrap ...
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0answers
75 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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0answers
240 views

IR2110 based 3 phase Inverter, Dc Bus Voltage inquiry?

The MOSFET gate-driver IR2110 has a high-side floating maximum voltage of 625V. I am designing a 3 phase inverter based of this IC and as I understand, in order to be able to get a 220 Vrms ac voltage,...
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0answers
1k views

Drive strength definition & fanout

Given an inverter of drive strength N (example N=16) and input capacitance 1.6fF, does it mean that it can drive N times its gate capacitance, i.e. 16*1.6f=25.6 fF, or N times the unit capacitance, ...