mosfet driver

I want to create a 24v to 12v buck converter. I am trying to control mosfet with optocouplör. I have 25kHz-50kHz pwm signal from arduino/pic16f877A. I have some mosfets like IRFZ44N, IRF540N IRF4905 and etc. I am using PC817 opto but I guess it is not suitable for high frequency pwm like 25kHz...

Hi I want to simulate this IR2103 based half bridge circuit but LT spice seems to be throwing an error: "Analysis: Time step too small; initial timepoint: trouble with node "u1:_gd_template:_input_stage:_lin_th:outp"" I got the spice model for the IR2103 from...

Hi, I don't know how to design a motor driver circuit using MOSFET for driving the motor. what are the parameters to be considered while selecting a mosfet. How do we calculate the resistor values. how do we select the diode. I have attached a reference schematic that I came across ,kindly help...

Hey, I'm trying an ambitious project, making a DC converter using a microcontroller. I'm using a PNP transistor to drive both the high side and the low side MOSFET. When I'm trying the circuit, even if I keep the duty cycle as low as 20%, there is a path to the ground for the current (I'm...

I am a complete beginner at designing circuits and my English sounds like a 5-year-old talking. So, please beer with me. I was thinking of building an aquarium light. As plants need a full spectrum of light to grow properly, this is the selection of colours I came up with by watching many...

Hi, I have been working on a duracell 3000 w inverter model drinv3000, long story short, my dad used it with power tools and now it does not work properly, he measured the voltage, and it delivers 104V AC instead of 115. I already checked almost every component on the board (desoldering them...

that title is quite a bit clunky, hope I'll do better job explaining what my problem and requirement is here: I have a circuit that has two PSUs: one for MOSFET driver chip (PS2); one for Raspberry pi (like) board (PS1). The driver is driven by the LTV-3120 driver which has it's input...

Mosfet driver Is burning while motor spins. What’s wrong here?

I was recently asked to use 2 mosfets to make a switch that turns a fan on/off via a PWM pin of an stm32 (this allows a gradual switch-on of the fan and not all at once .. here). I cannot understand why I need two and not one mosfet. Maybe it's because having a GPIO PWM [0 ... 3.3]V output that...

Hi all, I'm trying to drive a RFP30N06LE N-Channel MOSFET with TC4420 MOSFET Driver. The MOSFET is used to switch a [1W LED][1]. The input to the MOSFET driver is provided by the 5V from an Arduino Nano. But my circuit is not working: it seems that the VDD somehow leaks to the input of the...

Hello I am using a MOSFET driver circuit to supply power from one section to another section in my design. I need to pass 2Amps current from one section to another section in my design. I have selected SI2301 (p-channel mosfet) and SI2302 (n-channel mosfet). My question is that can a mosfet...

I want to buy a MOSFET in the rating of 600V/20A. I also want to buy MOSFET driver for that. I have to use it with Arduino Uno for controlling purpose. But I can't select which one to buy. Can anyone suggest me a good MOSFET + MOSFET Driver?

Hello everyone, I would really appreciate if you could help me Im making a mini fridge controller (PID), using a 4n25 optocoupler, an IRFZ44n Mosfet and a tec peltier I connect it to a 12v and 3 A and arduino 5v As soon as the arduino code is uploaded and I connect it, the mosfet starts to...

I'm trying to understand how to drive the MOSFET's in the two-switch forward, I designed a 200W DC-DC converter, 50V input 100V output but I was looking for using an MCU and IC in this case I have an IR2110 high side low side for the gate drive, I don't know if it is possible to use it? and if...

Hi guys, I am new in here. I designed a boostrap circuit with ir2112 ıc, but I want to rise up frenquency from 500k to 1mhz . I wonder how do I make such a circuit ? My circuit is bottom.

Three months ago I made a circuit to drive small dc motor with only one Mosfet connected as high side and used IR2110 to drive the Mosfet and it worked. Now I’m trying to remake the same circuit and it’s not working. I checked the connections like 100 times also I went back to the simulations I...

Hey There, so looking into Optocouplers, I just realized that the output is a transistor controlled by the light from the input - I (for some reason) thought it was a voltage source like a solar panel. Anyways, this would have funny, maybe stupid applications, like generating very high...

I am designing a boost converter which is rated on 100 watts, 12 volts to 24 volts, switching frequency is 20 khz, in open-loop conditions. when I give the input power supply to the circuit as 12 volts, my driver (HCPL 4506 Mosfet Driver) will take VCC as 24 volts due to My microcontroller can...

i have a 3.3v digital pin, attempting to use a PNP to switch an Nfet (Vdrain=5v) on/off at a rate of 1kHz. i can't use the inverting-NPN method to drive the gate because that way the Nfet would be on for a few mS after POR. Here's my circuit with a minimal # of parts: Am i full of it? Is there...

Hi all, First post here and very much beginner in electronics, trying to dive in. For my motorcycle, I’m trying to implement positioning lights in the blinkers: When turning on the blinkers, the blinker blinks regularly. When the blinkers is turned off, after a short delay, the blinkers shine...