Linked Questions

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2answers
2k views

MOSFETs: Gate-to-Source resistor and Gate resistor value calculation [duplicate]

I want to control several Mosfets through a microcontroller. I have a low-power application in mind, therefore the power consumption should be minimized. When do I need a Gate-Source-Resistor, and ...
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3answers
2k views

what the best way to calculate Rg gate driver for Mosfet

I need to drive a MOSFET IPW90R120C3 from Infineon here the Specification of MOSFET VDS @ TJ=25°C 900 V Rdson @ TJ=25°C : 0.12ohm Qg = 270nC Specification of ...
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1answer
2k views

Problem switching a MOSFET with arduino

I have a Problem turning a MOSFET On/Off with my Arduino. I try to controll multiple mosfets to supply a high power Device with current. Now my issue is that the mosfet does not turn on. Here is a ...
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4answers
469 views

Optocoupled MOSFET drive

I have a high power 12V rail that I would like to keep separate from the logic supply, and so would like to optocouple the N-MOSFET drive for an external high power LED light. Does this seem like a ...
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1answer
610 views

I need a simple example of IRF510 mosfet

I am attempting to duplicate the circuit of IRF520 Mosfet Driver module. I am however a bit confused at all the examples ive found online. I want to turn on and off 12v but i have to supply 5 volt ...
2
votes
3answers
360 views

Two mosfets, one digital pin

Im new to use of mosfets. If I was to use two Mosfets with an Arduino, would I be able to drive them both with just one digital pin connected to both mosfet's gates but opposite actions? For example:...
1
vote
1answer
452 views

What are the main culprits for frying a mosfet?

I have a bunch of FDN335N mosfets. They works great until i manage to fry them so that they never properly turn off(current leak i guess?). I Have heard that you should use a protection diode when ...
4
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2answers
296 views

Level shifted PMOS driver operation

simulate this circuit – Schematic created using CircuitLab Having some confusion this gate driver. It can be found in Design and Application Guide For High Speed MOSFET Gate Drive Circuits. ...
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2answers
444 views

How to filter noise out from large PWM system

I have a system that drives 300m of 24V LED strips. The strips are in 25 sections, each controlled by a MOSFET attached to an 328P. When PWMing the strips (f=500-1000hz depending on the pin), the ...
1
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1answer
170 views

Half-Bridge Gate Driver Circuit Question

I got two questions about Half-Bridge Gate Driver MP1907 circuit on brushless motor driving. MP1907 chip's eveluation board uses 1uF for bootstrap capacitor. However the 20A brushless motor ESC i ...
1
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1answer
121 views

P Channel Mosfet driving current

Can one someone please guide me with the current flow direction and amount of current (Through Gate) (how shall I calculate it) for a P Channel Mosfet? For example if I connect the Gate to something ...
0
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1answer
138 views

Low voltage controlled open drain circuit

I have a power regulator with an output enable that can be used to shut the regulator off without actually unhooking it. I am trying to figure out how to control that using a GPIO port of a Jetson ...
0
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1answer
54 views

Voltage drop at gate of pmos (or nmos)

Sorry if this question has been asked before, I've tried looking through google and Stack Exchange and I can't seem to find the answer. Resistors on the gate (R3 on the picture) are usually in the K ...