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Questions tagged [mosfet-driver]

A circuit that accepts a small-signal digital input and produces as output a high current appropriate for driving the gate of a power MOSFET. See also [tag:gate-driving].

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DC motor driver with fet circuit [on hold]

i need same circuit for dc motor drive my load DC motor (24 V, 60A) . i want to ask which circuit is best for it. any one have fet bridge perfect diagram. please share with me.
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1answer
52 views

Circuit protection problem driving high side MOSFET continuously

I need to drive a high side N-channel IGBT continuously. The circuit is essentially a passthrough, and the only thing I want to do is turn this pass through line on or off (usually if not always on) ...
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1answer
72 views

Voltage spikes in h-bridge inverter square wave output

I apologise if this is a repost but I couldn't find the problem anywhere else. I am trying to power an ultrasonic transducer using an h-bridge inverter design to convert arduino signal into a higher ...
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2answers
34 views

Is it appropriate to use the TB6621 or DRV8871 motor driver for powering 12V 1 amp motors?

I'm looking to make an Arduino powered rock crawler with 4 motors (want independent control of each wheel, also need to reverse). I'm looking into buying 12V DC motors that seem to have about a 1A ...
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0answers
36 views

Driver and H-Bridge questions

I have never used an H-bridge before, but now I want to toy around. Reading this document the author uses IR2110 (Datasheet) with IRF840 (Datasheet IRF840), and these datasheets will be my starting ...
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1answer
41 views

Explanation of a sample circuit for the FL5160 Dimmer controller

While looking for dimmer circuits, I stumbled upon the FL5160 Dimmer controller and it's specification at https://www.onsemi.com/pub/Collateral/FL5150-D.pdf The example schematic (for example, the ...
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1answer
65 views

What is causing these switching transients on a 3 phase motor driver?

One time I built a 3 phase motor driver, which works quite well in the original configuration. Recently, I changed the physical layout to this rectangular form factor, and now it has quite large ...
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52 views

High voltage switching using N-FET

This is my first time designing a High voltage switch, as come up with some interesting thing that I want to ask about. My application needs to short out a signal line to HIGH, with a 3v3 signal from ...
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1answer
45 views

3 phase Bldc hall sensor problem

I am trying to drive a 350 watt, 3 phase, BLDC motor (DGW07-20j model) with stm32 micro controller. But I have problem with hall sensors because their outputs are not similar to the hall sensors which ...
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2answers
70 views

How to determine PWM Frequency of a MOSFET to drive a BLDC motor?

What are the factors determining the PWM Frequency of the MOSFET driver circuit that drives a BLDC motor. Is there any equation for PWM calculation? For eg. I need to control the speed of a BLDC ...
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0answers
88 views

Power source switching circuit - 60-80V sources

I have a circuit I'm working on that has two power sources, one varies between 40-60V, and the other is 72V. The 72V power source will typically always be on, and the 40-60V source may be on or off. ...
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2answers
136 views

How to calculate MOSFETs gate resistor?

I am using the equation Qg = ig * t in order to calculate the gate resistor which charges the MOSFETs input capacitance (Ciss). The MOSFET I am using is the IRFP4368PBF. So if I use the equation Q=CV ...
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1answer
127 views

Choosing a suitable power supply for a MOSFET driver chip

I would like to use the TC4427 MOSFET driver chip, in order to switch the current through the IGBT AUIRG4PH50S, which will be placed in series with a resistive load. The power supply providing the ...
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1answer
50 views

Gate driver question

My main problem in this deign, as you can see, is the mosfet gate driver circuit . How can the latter be improved, assuming that it cannot oscillate?
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3answers
59 views

How to turn on high-side MOSFET of a buck converter

I'm trying to simulate some buck converters with real MOSFETs instead of ideal switches. The problem is that I don't know exactly how to properly turn on the transistor. The simple buck converter ...
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1answer
145 views

IR2110 driver output causing shoothrough despite deadtime

I'm having trouble with the ir2110 output. I'm working on a class d full bridge amplifier and I use 2 ir2110 to drive 4 irf540N mosfets. The switching frequency I use to generate the PWM is 240kHz and ...
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2answers
38 views

How to drive a high side mosfet with the L6388E driver?

I've been trying to assemble a circuit to drive an n channel mosfet on a high side mode with this ST L6388E chip click here for the datasheet with this circuit: using 12V of a power supply and 5V ...
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2answers
93 views

What is the correct way to control voltage on a mosfet

First Schematic with N-Mosfet simulate this circuit – Schematic created using CircuitLab simulate this circuit I have a few question on these design. First designed has been built on a bread ...
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0answers
83 views

How to isolate a RLC circuit with MOSFET switches?

I'd like to isolate, with high-side and low-side switches, a RLC circuit after the inductor has been energized with a current of 2-3A from a 12V source (see sketch). When the RLC circuit is isolated ...
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2answers
167 views

How to drive p-channel MOSFET

I need a high side switch. I thought about using a p-channel MOSFET. The source will be connected to around 50V-60V. How can I drive this MOSFET? I can't find a driver which can switch between 60V and ...
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0answers
82 views

MOSFET Driver P-channel

I want to create a DC-chopper to drive a motor. I found the following schematic online: However i don't understand how the MOSFETs are driven. On top there is a P-channel MOSFET with source connected ...
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2answers
82 views

How to deal with “peaks” voltages in mosfet in boost converter?

I'm designing a Boost Converter to go from 5 [V] to 12 [V]. The design I came with is the following: To understand better the design, please note the following: 1) To drive the mosfet I'm using a ...
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1answer
67 views

How do I drive 60 back-to-back LEDs (Christmas Lights)?

I would like to reuse some old LED strings. I hope to replace the (failed) original controller with an AVR chip, but I do not know how to construct the differential MOSFET driver stage. The sketch ...
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1answer
102 views

MOSFET driver circuit configuration for half bridge MOSFETs for power amplifier

I am making a class D audio amplifier and I am using a MOSFET driver to control two MOSFETs in a half bridge configuration as shown in the circuit below When I connected the circuit without the ...
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1answer
54 views

30N06L N-channel mosfet switching heavy load interfering with micro-controller circuit

I have a microcontroller that I want to use to switch on/off a heavy load (a car horn) with a 30N06L N-channel mosfet. Everything works when running a load of 4Kohms (with the car battery at 12v), but ...
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1answer
41 views

Issue with driving Brushless Motor with a MOSFET Driver

So I have been given a circuit which supposedly works. The circuit was the the one shown but with a 10k resistor where the scribbles are. Q17 is an IRLM6344TRPbF N-chanel MOSFET and Q16 is a ...
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2answers
35 views

Bjt for trigger MOSFET

I my project MOSFET need 13 v 65% PWM to trigger but controller output is 5 volt then how can I amplify this in voltage
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2answers
114 views

Select N-Channel MOSFET to drive speaker and LEDs

I have 3 circuits with MOSFET gates routed to MCU's PWM / IO and I would like to drive with them a Speaker, RGY LED and Backlight of LCD. There's a lot of parameters in MOSFET's datasheet. I am not ...
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0answers
23 views

Mosfet Based impulse voltage generator

enter image description here **Details- Mosfet_1 will turn on for 20ms and charge the capacitor C2 and after that, it will turn off. Then the Mosfet_2 will turn on for 3ms with 40kHz frequency and ...
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1answer
33 views

Single MOSFET motor driver with oscillation on output

I'm trying to drive a small DC motor with a PWM with the circuit below, where I'm using a TIL111 optocoupler and a IRF510N MOSFET. The PWM (50% duty cycle) is generated by a MCU STM32F103C8T6, the +3....
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1answer
205 views

Problem with IR2112 on Proteus

I am designing a pure sine wave innverter and am using IR2110 as a driver for the H-bridge. On protues however only IR2112 is available so i used it. I managed to get all the connections in a correct ...
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3answers
636 views

Can PWM affect a brushless DC fan given sufficient time?

tl;dr - Is driving brushless DC fans using PWM unhealthy for the fan compared to variable but steady DC voltage? If yes, why and how? The super simple ...
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3answers
133 views

MOSFET gate resistance's power rating

I wanted to verify the following or get some helpful pointers. So, I have a gate driver which can supply a maximum current of 0.5A , and I am driving a MOSFET Vgs of 15V, based on these two ...
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1answer
127 views

FET Switching Loss in BLDC Inverter

I'm designing an inverter for trapezoidal control of a 500W BLDC motor, using DRV8301 for the gate driver. My switching frequency is 10Khz, Vdd is 48V, and Imax=20A. I've been trying to calculate the ...
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1answer
131 views

High Side MOSFET Driver

I am familiar with the bootstrap circuit and its design procedure. The steps involve: a) Figure out the Qg of the MOSFET at the Vgs you plan to operate (for instance Vgs=15V, Qg=150nC). Next, figure ...
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1answer
171 views

H-bridge MOSFET NAND gate driver suffered from logic voltage drop

I've tried to reproduce the NAND Schmitt triggers circuit to drive my H-bridge MOSFET as per following source: http://axotron.se/index_en.php?page=34&chapter=0 All my design files are at this ...
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0answers
71 views

Finding complementary PMOS for H-Bridge and connecting Gate-Driver

I am currently implementing a Half-Bridge using an IRF520PBF (Link to Datasheet) for the lower part of the bridge and I am currently looking for a PMOSFET for the upper part of the bridge (I am aware ...
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3answers
1k views

Resistors getting hot in this MOSFET driver circuit

I created this circuit as general purpose MOSFET driver circuit for PWM frequency up to 10KHz (usually from microcontrollers): But R3 and R5 are getting hot soon as I connect 5V supply and I did not ...
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2answers
232 views

High-side switch for 24V controlled by logic level

I mainly use this high-side switch design for 5V and with low current loads (under 100mA). Based on the VDSS (-50V), I thought I could energize this design with 24V as well. Apparently, I am making a ...
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1answer
209 views

Precaution and Rules to Paralleling Power MOSFETs

I'm going to use a Full Bridge Inverter for my application. The problem is that the current which flows through the MOSFETs when they are ON can reach 70A RMS and the power dissipation is too high. ...
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1answer
94 views

why MOSFET Driver [closed]

Why do we youse MOSFET Driver when we use MOSFET as a switch in a high side configuration and we do not use it in low side configuration? Can we drive a MOSFET ON/OFF with the OUTPUT of UC3842?
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1answer
104 views

MOSFETs Gate Driver: Current drawn from the Power Supply

I'm going to use a L6491 High voltage high and low-side 4 A gate driver to drive a half bridge made from two IPW65R019C7. I'm going to use a +15V to supply the L6491 MOSFET Driver. How can I have an ...
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0answers
101 views

Can I use a MOSFET driver to blink an LED

I was testing the MOSFET driver LTC7004 and tried to supply power to VCC and GND from an Arduino Mega with a PWM signal. The schematic resembles a Bootstrap circuit. I connected an LED between pins ...
0
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1answer
112 views

Can I drive a Low-Side MOSFET from a High-Side Driver?

I'm working on a power electronics project where it involves driving 4 different MOSFETs, (3 HighSide and 1 LowSide). Rather than using a different IC for the LowSide driver, I am thinking about using ...
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2answers
208 views

MC34063 with external FET. Why?

Follow on from : earlier post Below is an LTSpice simulation of an MC34063 step up (5v to 9v) circuit. As you can see, this particular circuit is working correctly, and delivering about 300mA. The N-...
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2answers
108 views

Driving Mosfet, why is it burned? How should the circuit be modified?

I using MIC5018 to drive Mosfet (driving 48V,3A DC motor). Each power supply is powered independently. I am using a 48V, 3A DC motor. Before power-on, if it is connected to the computer (5V) and the ...
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1answer
56 views

Mosfet drive heating issue

I am trying to drive a motor/lamp (10 Amp Max). The voltage across the load will be controlled via an N-Mosfet. I started building the mosfet drive part and I'm kinda stuck. simulate this circuit &...
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3answers
152 views

Can I use a mosfet as a switch to power arduino?

I have a project in which I intend to use a NE555 timer to turn the arduino on/off on specific intervals. I don't want to use the ne555 output directly because of the current limitations of the chip. ...
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2answers
134 views

Why should half-bridge driver have resistance in series with VCC?

I am using the three of the RT9624A half bridge driver as part of a 3-phase motor control circuit. Everything was working well in testing until I got to about 80% duty cycle and one of the drivers ...
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1answer
336 views

Lithium ion battery protection IC not able to drive MOSFET

I have integrated the TP4056 charger design into my PCB. The problem is that when I connect the battery at the battery terminals, I am not able to get the voltage at its output pin. The circuit can be ...