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Questions tagged [mosfet-driver]

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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 the [gate-driving] tag.

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LTC7000A datasheet suggests that it works for the wide input range of 3.5V to 135V Vin. But in my application, I am facing an issue with the MOSFET switching at lower voltages. In my design I have ...
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I'm new here, so I apologize in advance if I'm not clear. I'll do my best to clarify your questions as soon as possible. For a professional project, my team and I purchased the rear seats of a ...
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I am trying to build a class D amplifier using an IR2104 as the MOSFET driver. I am using a 10 V DC supply for two IRFZ44N MOSFETs. Despite the current and voltage rating of the IRFZ44N MOSFETs and ...
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I have a high frequency X-ray generator board with components, that keep getting fried. Here is a simplified schematic: The components that fail are the IR2128s MOSFET driver, diodes D1, D2 and the ...
Bavly's user avatar
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This is a question following this one: What is the best way to stack another switch? I want to stack an electronic switch over a mechanical switch, and have it driven by a microcontroller (arduino ...
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Vero board construction, front view: Vero board design, back view. (Please There's a lot of jumpers here, which may make it not easy to visualize): I design H bridge circuit using IR2104 and 4 ...
samuel's user avatar
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I intend to drive my MOSFETs in the following manner: Buffer IC (NL27WZ16 or NL7WZ16) will convert the 3.3 V PWM to a 5 V PWM which will then be given to 1ED3142MC12H. All the LEDs (LED, +15 V LED, ...
ankit kumar's user avatar
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I designed a PCB based on an old design from TI in the TDC1000-GASEVM User’s Guide (see Figure 27. TDC1000-BSTEVM on page 33). The goal of the board is to amplify an high frequency signal from 3.3V ...
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I'm trying to make a Geiger counter for a project for my lab, and I decided to use the schematic from this website: https://ocw.mit.edu/courses/22-s902-do-it-yourself-diy-geiger-counters-january-iap-...
17 Trịnh Hữu Phúc's user avatar
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What is the IC with the marking code H2K?
HNLinh's user avatar
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I am building a half-bridge driver using a LM2101 to obtain a controllable voltage using PWM - my goal is to have a steady output selected voltage. The circuit was designed following the datasheet ...
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I am really confused with this H bridge circuit: When the switches S1 and S4 are ON then current flows from V1 to S1 -> Load -> S4 -> Gnd. Now suppose suddenly I turn off the switches S1 and ...
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I'm analyzing the circuit of the STGAP3SXS in EVLSTGAP3SXS(Page 5) by STMicroelectronics. I want to ask what's the purpose of this capacitor C56 in the soft off pin, I thought it was for filtering by ...
Amine Gam's user avatar
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I wanted to ask if anyone had guidance on making a transmission gate (with body diodes, however) to use on the high side of an H bridge. For context, I am making an H-bridge to drive a resistive load. ...
Microcontroller Enjoyer's user avatar
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I’m building a MOSFET (IPD50N04S4-10) half-bridge driven by an LM2101 (12 V) to control output voltage via PWM (~120 kHz). Bootstrap is 100 nF from VB–VS with a fast diode (MUR 160). Each gate has a ...
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This is a MOSFET driver for inductive load switching. Expected switching frequency is no more than 50 Hz. The driver is controlled by a 3.3 V GPIO. Load's voltage is in range 24..32 V. The driver has ...
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I recently posted a question, POST, that will correlate to this post. To be brief, I am working on designing an arc lighter. I am trying to base the design on a few commercial products that I ...
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how do you calculate the gate current required to drive a MOSFET? Also how do we calculate the number of MOSFETs in parallel that a gate driver would be capable of driving?
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I have the following circuit to switch power to a servo on button press and rotate it clockwise or counterclockwise: I can choose a power supply from 4.8V to 6.0V (although, I need at least 5V to ...
kovac's user avatar
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I am driving a FET and measuring the current with a 1 mOhm shunt on the low side. The maximum current is about 30A, which means a voltage drop of 30mV on the shunt. Should I connect the ground-pin of ...
Wiers's user avatar
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To reduce time of MOSFET switch , we need as much current as possible and recommendations says it can be like 5A. So, if i make a transformer with proper driver to provide a 5A - 15V on secondary, it ...
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I'm developing a motor driver for a sumo robot, and while trying to understand better how to actually move the motor, I stepped in something I didn't quite understand. Here follows the truth table of ...
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I am trying to design a digitally controlled current source but I have doubts regarding whether the driving of the Mosfets in the Blue box is correct or not , I understand that for example when the ...
AbdAllah Talaat's user avatar
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I'm using the FOD3180 as an optocoupled gate driver to drive the gate of an N-channel MOSFET (STB130NF7) in a low-side switching application.The application is intended to switch at 10 kHz, with the ...
Lucas Marino Torres's user avatar
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My questions are such: Why did they separate the circuit to two different circuits? How did they think of it and why to do it? Why the input capacitance is without \$C_{in}\$, since we should have ...
Ben Shaines's user avatar
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I am designing a full-bridge converter with two legs. Each leg has a high-side and a low-side MOSFET (totaling four MOSFETs: S1, S2, S3, S4). I am using gate driver ICs with bootstrap circuitry for ...
shah's user avatar
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I have been working on designing an arc lighter. So, I ordered a few different arc lighters on Amazon, Aliexpress, and Temu for reverse engineering purposes. I have build a few prototypes using ...
Charles Florestal's user avatar
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How do you determine the correct gate driver output reference voltages to properly drive MOSFET gates in a half-bridge configuration using a dual power supply (Vdd and Vss)? I'm analyzing the ON and ...
E4928's user avatar
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I am looking at ICs for motor control and almost all of them have internal charge pumps for driving the high-side MOSFETs. On the other hand I don't see discrete designs (either motor control or SMPS) ...
irag10's user avatar
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This is another question about discrete-component gate drivers for MOSFETs. I compared two circuits for that purpose - both making use of a push-pull driver to have "enough" current for ...
Junius's user avatar
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I have a common source configuration of an N-channel MOSFET (circuit diagram given) where in I am giving 48V to the B+. For now, the gate does not have a gate driver connected and is floating. I have ...
Gokul Karthik's user avatar
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I found the following circuit in the application note from Nexperia (Fig. 16 in https://assets.nexperia.com/documents/application-note/AN90059.pdf) Can anyone confirm that this circuit is wrong? I ...
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I'm trying to simulate the working of IC IR2011SPF control the CSD19503KCS mosfet. I had try to change the solver and integration method, but it can't finish the simulation. The same simulation is ...
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I want to make a 12 V to 30 V boost converter with a 100 Ω load using an IRFZ44N MOSFET and a TLP250 driver. Is my circuit correct and why does the voltage only produce 29.4 V? In theory the duty ...
Eiji Zora's user avatar
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//Edit: Thanks to the comment from @periblepsis, I fixed the calculations This is an academic question driven out of desire to gain understanding so please avoid comments like "that is not done ...
Junius's user avatar
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I have two solenoid actuators with a consumption of 90 mA, one connect to ground and the other connect to 12 V with common driving. Can I connect them directly to the output of the MCP1416T driver ...
Erick.87's user avatar
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When looking at the data sheet of the LM74700D-Q1 Automotive Low IQ Reverse Battery Protection Ideal Diode Controller, I found that the typical application schematic connects the source of the N-...
Theneka's user avatar
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I'm working on a project where I need to enable a MOSFET using an op-amp, as shown in the attached circuit. The op-amp monitors a voltage level, and when the voltage exceeds a set point, it should ...
Hamed's user avatar
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I need to use IR2302 or IR2104 gate driver for my synchro buck application, but I could not find a good explanation about the capacitor between pins VB and VS, I guess it is called bootstrap capacitor ...
Hubert Jo.'s user avatar
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I bought the SOLO UNI V2 motor driver but I don't understand what component "R510" is. There are 14 above, they must be the gate drivers and mosfets, but I can't find them online
KaleM's user avatar
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I am designing a circuit to reliably control a 12V heater-based actuator using MOSFETs driven by a microcontroller. The schematic employs both a high-side MOSFET (controlled by SIGNAL_1) and a low-...
artsin's user avatar
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Maybe this one is a simple question for some with more experience then me. I am working on an ESP32 board and I designed simple voltage divider with one N-mosfet and one P-mosfet. I will be using this ...
Sinisha's user avatar
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I am trying to select a through-hole compatible gate driver that will control 100 SiCFETs (IMZA120R014M1H) in parallel. I am trying to determine the gate resistances as well. The total gate charge \$...
C-LEC's user avatar
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This is my first time trying to make an H-bridge. Are the MOSFETs, gate drivers, and the configuration of the PWM signals correct? What could be changed to make it better? I'm trying to run 12 V ...
Lobster's user avatar
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I'm working on a driver board for a 12V DC motor with encoders based around the IR2104 H-bridge drivers and IRF540 MOSFETS. The PCB is made in 4 layers, with a GND and power plane in between (top-GND-...
hdaniu's user avatar
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I am working on an old traction electronic card that uses the 2SD106AI-17 IGBT driver. As it is an ancient module, I couldn't find much info about it except for a concise "datasheet" that ...
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A PCB came to my shop for repair that has a capacitor soft charge (or inrush current limiter) using a IRFR5305 MOSFET and driver. The chip that failed is obviously the 6-TSOP driver labeled "AASN&...
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In the datasheet of this charger IC, on the Typical Application circuit figure there's this PMOS (NDS8434) connected to pin 8. The gate-source threshold voltage (V_GS(th), max) of this transistor is -...
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I made this H-Bridge using MOSFETs and BJTs for gate driving, and I want to make sure it works before I build it. The circuit runs at 24V, using N-channel and P-channel MOSFETs for switching. For the ...
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I am implementing a half-bridge resonant inverter similar to the schematic below. I am driving the gate driver with a VCC/VDD of +12V, and a Vin of +12V. Because HS, the high-side source connection is ...
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