Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [powermosfet]

299 questions
16
votes
3 answers

How to design the gate resistor value?

This is the datasheet of the driver IC I am working on (LM5112). Following is the application diagram of the module. Basically this is the GATE driver circuit for the MOSFET with PDM signal as the input. I am looking for how to calculate value of…
vt673
  • 897
  • 3
  • 13
  • 27
12
votes
5 answers

p-channel MOSFET switch

I want to use a MOSFET as a switch driven by my microcomputer. The original circuit using N-channel MOSFET is on the left side. Honestly, I do not understand the choice of the IRLZ44. The circuit is designed for Arduino, which has 5V logic. …
Pygmalion
  • 543
  • 1
  • 5
  • 15
8
votes
5 answers

MOSFET overheating and voltage drop

I've searched on the network for days but couldn't find a solution to my problem I hope you can help me. I want to create a DC motor speed regulator using IRFZ46N as a power MOSFET and a 10k potentiometer. I created this circuit and tested it on a…
minghierid
  • 83
  • 4
7
votes
5 answers

MOSFET keeps blowing out

I am trying to make a system that acts as a constant current/power load. At the time I am working with the power electronics, but I am having some trouble with the MOSFET in the circuit. Below is a symplified schematic: A power supply is connected…
Cheche Romo
  • 815
  • 5
  • 14
6
votes
2 answers

Power Mosfet Gate Voltage

The early Power Mosfets were deemed to be fully enhanced with 10 VDC between gate and source. The gate source threshold voltage was defined for 1mA drain current and would be between 2 and 4 VDC. The gate source rating was 20VDC but the curves…
Autistic
  • 14,235
  • 2
  • 27
  • 65
5
votes
4 answers

Why won't this circuit work when the load resistor is connected to the source of the MOSFET?

I want to use a MOSFET as a switch but wanted to put the the load to the source terminal of the MOSFET. I tried putting the load between the voltage source and drain terminal which works perfectly, but this doesn't work. Why won't this work?
Manas Sanas
  • 53
  • 3
5
votes
2 answers

Overvoltage Protection

I just destroyed my $1,500.00 wind turbine's battery charging module. I think I need a surge & overvoltage arrestor to add to my system to protect its replacement. We have a small family farm in Northern Ontario Canada. We are off-grid, producing…
GCJB
  • 51
  • 3
5
votes
1 answer

What is the purpose of voids near thermal pad in a MOSFET?

http://www.aosmd.com/res/data_sheets/AONP36336.pdf Why do MOSEFT manufacturers provide a void as shown below?
Divya K.S
  • 2,489
  • 16
  • 31
5
votes
5 answers

Kelvin Source Terminal on MOSFETs

On MOSFETs with multiple source pins, is the so-called "Kelvin-connected source pin" connected any different internally? Or is it just like every other source pin? EDIT: Just to be clear, I am not asking what the Kelvin connection is for. I'm…
DKNguyen
  • 54,733
  • 4
  • 67
  • 153
5
votes
2 answers

Designing MOSFET bridge rectifiers for high voltages

I've been looking into MOSFET bridge rectifiers, also known as "zero IQ" rectifiers, as a replacement for traditional diode-based bridge rectifiers. Here's a simple example: The benefit, of course, is that the MOSFETs don't exhibit a forward…
Polynomial
  • 10,562
  • 5
  • 47
  • 88
4
votes
1 answer

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". However, I could not find any information about this electronic component either on the…
lol lol
  • 145
  • 5
4
votes
4 answers

Passing 10 A through a nichrome wire (2.3 Ω) with a 4.2 V Li-ion battery source

I have a certain electrical problem with me that I'm unable to figure it out. I need to pass 10 A current through a 2.3 Ω nichrome wire to heat it up using a 4.2V Li-ion battery with a 70-150 C discharge rate. I currently have the following MOSFETs…
Dian Basit
  • 41
  • 3
4
votes
1 answer

MOSFET driver circuit for inductive load

In our experiments, we use coils to generate magnetic fields. In order to have a stable magnetic field, we actively regulate the current in the coil (typically between 10 to 60 A) by using a PID and power MOSFETs (IXYS IXFN210N30P3, 8 of them in…
sudipta
  • 51
  • 2
4
votes
3 answers

Switching MOSFET reacting much slower than expected on rising edge in simulation vs reality

I have the following schematic. This is a NE555 with voltage controlled by a 12 V voltage reference (TL431) providing a PWM of around 10 kHz at a 90 % duty cycle. The PWM then powers the gate of an NMOS (IRFZ44N), allowing current to pass through…
HFOrangefish
  • 839
  • 3
  • 14
4
votes
2 answers

What does the cross point of V-I curves mean?

Here you see a V-I graph including many curves achieved under different junction temperatures of an IGBT. As it can be seen there is a cross point where all curves intersect each other. Does it make sense? If yes, what does the cross point mean and…
Albert
  • 139
  • 1
  • 6
1
2 3
…
19 20