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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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1answer
568 views

P-Channel MOSFET gate protection

I'm controlling a P-Ch MOSFET on a circuit, VIN is 8-30V TTL_IN is a 0-5V signal generated by a MCU, which can source/sink currents up to 15mA Zener Izt 5mA (BZT52C15) MOSFET Vgs limit 25V I'm ...
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1answer
992 views

High Power H-Bridge with IR2125 Drivers Problem

I'm currently stuck on a problem when trying to drive a 140V DC motor using an H-Bridge with 4 high-power mosfets and 4 IR2125 drivers. I'm using as input to the drivers a signal generator of 5V in ...
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1answer
57 views

MOSFET gate switching time

In high current boost converter (6-14A input, 5A output), how to determine optimal switching time for the MOSFET gate, to get balance between power loss and switching noise? I mean the time MOSFET ...
1
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1answer
129 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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0answers
291 views

Connection of IR 2110 for grid connected flyback inverter

I hope you all are fine. Before i proceed to my question please refer to the diagram shown below. The circuit is basically the unfolding stage of the conventional flyback inverter. There are two ...
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0answers
45 views

Rise time and fall time issue in the power MOSFET

In our automated design due to MOSFET obsolete we have changed new MOSFET which gives us rise and fall time issue at the frequency applied from 10Khz to 500Khz. when we use the power MOSFET as Load ...
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0answers
76 views

WS2811 LED Strip Driver

I'm in the process of designing a LED strip driver using a WS2811 chip and 3 MOSFETs. I've attached the schematic below. I based it on the reference circuit in the WS2811 datasheet (link), and this ...
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0answers
110 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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0answers
110 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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0answers
32 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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0answers
108 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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0answers
2k views

IR2110 driver failure

I'm facing issue with IR2110S driver while driving 3 winding BLDC motor (24V, 8A rating with Hall sensor feedback) using IFR3710 MOSFET (half bridge configuration). Issue: When varying duty cycle ...
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0answers
153 views

Choosing MOSFET driver

I'm new to using high current MOSFETs, and as a result, have never used a MOSFET driver. I am planning on using an irf100s201 MOSEFT to control a LED panel, which draws 35A at 12VDC. This panel will ...
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0answers
151 views

LTC4417 Power path converter not working

I am fairly new to pcb design and I am having trouble understanding why my PCB is not working. I am using a LTC4417 power path converter and a IRF7324 power mosfet to turn on an embedded system with a ...
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0answers
506 views

Parallel MOSFET gate drivers, should I connect all the driver outputs together?

I'm making a capacitive discharge spot welder. I want to parallel 36 MOSFETs IRFB7430PbF and use a gate driver for each MOSFET. I want quick switching times both on & off and ideally very little ...
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0answers
289 views

MOSFET driver “overcurrent” error but no current is flowing

I have a motor controller design that I was hoping would be able to drive very high currents of 50A continuous up to 100A peak. In order to do this, I have put 4 mosfets (PSMN0R9-25YLC, http://assets....
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0answers
358 views

Significant voltage drop across IGBT

I'm using an IGBT in a wireless charger circuit as a swtich to send 'pulses' of power across the gap. I have 14V coming from the mosfet driver and I can see around 5v on the collector. I have the ...
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0answers
286 views

Is it possible to control 3 DC motors (12V, 5A) with a single driver (BTS7960-43A) if the motors should rotate 1 at a time?

I have to use 3 DC motors in a project, each of them are 12V-5A, controlled by Arduino. At any given point, only one motor will be operating. So I want to avoid 3 separate drivers for 3 motors. ...
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0answers
1k views

Astable Multivibrator Circuit using MOSFET

I am currently trying to simulate an astable multivibrator circuit to drive the MOSFET in a boost converter. I am using MOSFETs instead of BJTs for the multivibrator circuit. However, my simulation ...
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0answers
895 views

Troubleshooting HIP4081

I'm driving four N-channel MOSFETS (IRFLIZ44N) with a HIP4081, and the circuit looks like the following: The MOSFETS are driving a peltier module, and the input pins of the HIP4081 are being driven ...
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0answers
53 views

protect a driver for steep edges into capacitive load from external voltage

I want to have a 5V trigger output signal that has rising and falling edges of up to 200ns max. into a load of 1-5 nF. I thought about using MOSFET driver circuits (e.g. MC33152, many suppliers have ...
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0answers
235 views

driving a Peltier with a MOSFET

I am attempting to drive a Peltier device using a single MOSFET, controlled by a microcontroller. I am working with several different peltiers and various MOSFETs, so wont provide component details ...
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0answers
192 views

AC current amplifier with pwm current control

I'm starting to build a piece of test equipment to test a trip device for switch gear breakers. I need to amplify an AC current source. When the breaker is in service the trip device receives its ...
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0answers
2k views

DC current amplification

i'm trying to design a battery charger for 5Ah li-ion battery. Due to cost management problems, i am not able to use advanced 5A charger controller ICs; instead, i am going to use a 1A controller with ...
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0answers
45 views

IR2101 MOSFET driver shows error

Here is the circuit I am trying to simulate, with HIN and LIN at 5 V PWM, 50 % DUTY cycle. The circuit runs OK for 2-...
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0answers
40 views

Problem with Line to Line Voltage Output in 3 Phase Inverter MOSFET Bridge Circuit

I have a problem in my 3 phase inverter circuit output. Below, i've attached an image of my circuit. As you can see, i have 3 outputs. There are R, S, and T. So, i've measured line to line voltage ...
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0answers
35 views

Prevent spurious triggering of NodeMCU GPIOs

I designed a simple circuit to control a relay with a NodeMCU micro controller. The NodeMCU polls a remote web service via a simple API and pulls high or low the D1 GPIO according to what it's posted ...
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0answers
40 views

Push-pull transistor - input current spikes and advantage over just an npn transistor

I have simulated the following circuitry in LTSpice: Input Voltage pulse characteristics: Questions: 1. What is the reason for the current spikes on the input resistor R2? Do I need to worry about ...
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0answers
48 views

stepper motor driver heats up

I have this motor driver design set up on a breadboard for a bipolar stepper motor. I was able to drive the motor forwards and backwards for about 5 minutes. I realized that two of the P mosfets were ...
0
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0answers
36 views

driver for IRF840

I want to use MOSFET IRF840 for DC-DC converter application. I am providing PWM signal from PIC microcontroller. I have tried to simulate using IR2110 but it is not working. What type of gate driver I ...
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0answers
57 views

PWM Not Driving IRL520N MOSFET

I am trying to switch a IRL520N logic-level MOSFET using a 0-5V PWM signal from my microcontroller (PyCom FiPy). I tested just the MOSFET with a 10 Ohm series gate resistor and my load is a 9-15V ...
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39 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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0answers
60 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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0answers
93 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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0answers
116 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 ...
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197 views

Please help me critic my H-Bridge MOSFET motor driver circuit

This is the first time I build the H-Bridge MOSFETs driver circuit. Due to some limitation of desired components. It is all SMD, so I don't really have a proper way to test it before building the ...
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0answers
58 views

Driving MOSFETs with Bootstrap connections

I'm designing a type of a buck converter which has the following circuitry. Simulation runs fine on PLECS and I've added three bootstrap connections to drive these high-side MOSFETs (All top three ...
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0answers
61 views

Clamp 3.3V Raspberry pi square wave

I have Sqaure Wave coming from raspberry pi. It switches from 3.3V to 0 with 50% duty cycle. I would like to connect 3V from external power supply and clamp this output so that it start switching ...
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0answers
31 views

What is the diffrents in below MOSFET circuit considering control circuit?

What is the different in below MOSFET circuit considering control circuit? What is the charge pump involving ? Is it required charge pump for the both the circuit?
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0answers
76 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
230 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
154 views

MOSFET as a motor driver

I have been at this problem for months now, and am officially out of ideas why it's not working. I'm trying to use an N-Channel MOSFET to help drive a DC brushed motor from a microcontroller, set up ...
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0answers
357 views

IR2104 MOSFET driver

I have a simple circuit, where I want to use a MOSFET (IRF8010) as a switch. I have a microcontroller which produces a 3.3V PWM output @ 500Hz and will be used to control the MOSFET. Obviously, ...
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0answers
148 views

Bootstrap drive for 2-transistor forward converter

I need a driver for the high side switch in a 2 transistor forward converter as follows: First, I thought a bootstrap circuit would be fine because during the freewheeling phase, the highside FET's ...
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0answers
261 views

Is it possible to connect/disconnect TP4056 using a combination of N and P channel Mosfet?

I'm trying to design a parallel charger for 4 18650 batteries using 4 TP4056. The main idea is to isolate each battery when the "External Power" is connected, so each charging circuit can charge its ...
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0answers
321 views

Can you drive a logic level IGBT directly from a micro controller?

My question pertains specifically to devices like an EcoSPARK®2 400V, N-Channel Ignition IGBT. I'm investigating the requirements for building an electronic ignition system for a go cart. This would ...
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0answers
336 views

Simple high-side load switch for grounded loads with linearization stage

I want to design a very simple high side switch, using components already present in the bill of materials of a larger project. I do not want to choose special components, but just try to re-use what ...
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0answers
102 views

Replacing Decoder/Driver IC (30V, 300mA)

I'm looking to replace an FP2800a decoder/driver IC for a flipdot display. This chip decodes to 28 outputs, which it can drive towards a Vcc of 30V or GND with a maximum of 300mA. A search on ...
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0answers
193 views

Does this PWM driver require additional protection to the MOSFETs?

I have designed a circuit to run a 555 as an astable multivibrator. The values for the oscillator are a 4.7 uF capacitor, a 1k resistor, and a 10k potentiometer. For the capacitor I will use an ...
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0answers
373 views

How to prevent high side PMOS from glitching?

I want to use a PMOS-Transistor as a high side switch like so: simulate this circuit – Schematic created using CircuitLab But when I tested this circuit on a breadboard, there was always a ...