Questions tagged [h-bridge]

A circuit which allows power to be applied to a load in either direction. Often used for reversible motor control.

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Is it possible to control a matrix of motors using H-bridges?

I am wondering if it is possible to control a matrix of motors using H-bridges? A design in my mind is shown in the picture. I haven't seen anyone doing something similar, so I am wondering if there ...
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Bulletproof H-Bridge

I am in the process of building a low frequency (that is, transformer based) pure sine wave power inverter; 24 VDC to 120/240 60 Hz AC. The schematic I've attached is for one quarter of the entire ...
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Isolate digital switching from audio circuit

I'm using an L298 H-Bridge to drive a DC motor. The motor is spinning a magnet across a guitar pickup at ~30 Hz. That signal is then amplified and sent to a speaker. However, the output signal also ...
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Do I properly use Toshiba H-bridge TB67H400ANG?

I am new in this forum, so I am sorry if I don't properly ask my "question". I am a beginner in the making of circuits and Arduino programming. (first time using an H-bridge, first time ...
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Output resolution of PWM H bridge drivers such as L298N

I am working on a project which require a high resolution of the output signal of L298N or similar driver. Is it possible to control the output signal with a 1% resolution or better? What is the ...
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Are these H-Bridge motor driver controller ICs capable of reading position info from potentiometer?

I'm specifically referencing two examples of H-bridge motor driver controller ICs (BD6210 and WT7901). To more fully understand and troubleshoot the circuitry of a typical exercise bike or elliptical'...
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H-Bridge with highly inductive load

I am trying to understand the H-bridge, I have edited the circuit and followed the advice in this thread. Is this a good H-bridge design for excitation of the magnetic core which is highly inductive ...
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IGBT driver IC TCC4421 getting hot when connected to IGBT gate through a toroidal transformer

A strange overheating problem: A TL494 PWM controller pulsating a TC4421 buffer IC, which is connected through a series 0.47uf capacitor to the primary of a toroidal transformer. The secondary is ...
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H-bridge with 6 MOSFET?

Searching Amazon for a PWM controller board I found this: https://www.amazon.com/dp/B07MH43SXR Apparently, they are 6 MOSFETs. I understand that an H bridge is built with 4 MOSFETs. Is there any ...
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Using H-bridge gate drivers to drive MOSFETs in non PWM applications

I am using IR2110 to drive a highside MOSFET which I intend to use to control the charging of a lithium ion battery (disconnecting it from the charger once full). I am not using any PWM control ...
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Why is there a MOSFET here?

On the TI DRV8703-Q1 H-bridge, there's a MODE pin to select the control interface. What's the purpose of the MOSFET highlighted ...
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H-bridge gate driver for an ESP32

I used an H-bridge for 12V 10A brushless DC motor. The motor must run in both directions. ESP32 ----- Multiplexer Circuit ---- Gate Driver ---- H Bridge ---- Motor I have a few questions. Am I using ...
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Driving a gate driver with another gate driver

I have an IC with integrated gate driver. This IC has an integrated logic, charge pump and gate driver section. Unfortunately, the rated voltage of my application is higher than the ICs rated voltage. ...
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Drain current spikes when switching on MOSFET with LT1160 driver

I'm designing a control circuit meant to drive a proportional valve. I'm trying to simulate the driver and mosfet side of things in LTspice using the LT1160 half bridge driver and two readily ...
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Low Cost andd Urgent H Bridge Need?

I am Creating a H Bridge for 4 x 12V 5A BDC Motor with driving ESP32 Digital Output. Do I need any Components? because I Must be Small PCB design. (Maybe I can place 1k Resistor to N Channel MOSFET ...
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Dual H-bridge DC motor driver using logic voltage supply and not actual voltage supply

I am trying to control two 12V motors with this H-bridge board using a 12 V 7 Ah battery and an Arduino Uno. What I have noticed is that my PWM signals are acting as on/off, and the motors are ...
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Emissions issue with H-Bridge driving piezo transducers

I have the following block in a PCB design: This drives a ~ 5W piezo transducer at 113KHz. The functionality of the system is great, nothing heats up at all. The issue is when I did a quick pre-...
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Turn two circuits on and off one at a time

simulate this circuit – Schematic created using CircuitLab I want to use two MOSFETs to supply power to two different circuits. However only one of these MOSFETs can be on at a time. One FET for ...
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What are the limitations of AC coupling a MOSFET gate?

I came up with this AC coupled half bridge for high positive and negative voltage output with logic level control that I cannot find in any resources about (probably due to wrong search terms): It ...
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Powering up l298n module

I have a l298n motor driver, hbridge, which i am using with my raspberry pi. I am supplying 6V to the hbridge from a battery holder that takes 4 AA cells so in total it is supplying 6V, yes. Now the ...
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Is the L298N H-bridge in FPGA (Intel DE0-Nano-SoC) compatible?

I am trying to write a code that controls various DC-motors through a multi L298N H-bridge using FPGA (Verilog or VHDL). I have a PWM signal generated right now, but can't figure out how to write to ...
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SCR inverter (thyristor H-Bridge) schematics/working principle?

Several online articles mention the so-called "Single phase SCR Inverter". Sample schematic is attached below. In reality, this, of course, will not work, since SCR2 when activated after ...
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Why use a PNP transistor on the high side of an H-bridge?

A lot of H-bridge diagrams feature PNP transistors on the high side. I have not found a satisfying answer as to why they do that. My reasoning for using a PNP on the high side was that I did not want ...
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Ultra Low-Power H-Bridge (micro Amp)

I'm working on a project to drive a pair of electrodes, one at 12 V and one at 0 V, with a very low-frequency polarity change (every 10 minutes). The current draw across the electrodes peaks at 200 uA,...
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Inverter filter heating up

I have a full-bridge inverter whose output is connected to an LC filter, like in the following image: The power supply is at 20 V, the switching frequency is 100 kHz. The output is a sine wave with a ...
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H-Bridge using 2 half bridge drivers shorts when powered on

The goal is to control various Peltier modules using an H bridge and a PWM signal. I've designed this schematic and made a PCB out of it. It is an H-bridge using 4 IRLR7843TRPBF high power MOSFETs and ...
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2 votes
0 answers
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HIP4081A power-up problem

I'm using the HIP4081A in a h-bridge motor drive to drive PMDC motors. The design is working fine when running on 12V but now when I have added a buck/boost converter TPS55165-Q1 so I can run on ...
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Effects of backdriving a motor

If you backdrive a motor do you risk damaging the H bridge it is attached to? What considerations must be made if the motor has current running through it? I will be using a PWM circuit to control an ...
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1 answer
70 views

Will this motor driver work with a lower voltage?

I just started studying electrical engineering as a hobby, so I'm a noob. I'm making a schematic for a sumo robot and I'm using a L6206 dual full-bridge driver to control the two brushed motors. In ...
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123 views

PCB design with h-bridge and MCU

I'm interested in adding two H bridge circuits to a PCB also holding a cortex M4 microcontroller. 12V/1A max motors. H bridge Ln298 H bridge. What design considerations should I make to isolate the ...
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DRV8801 H-Bridge : need for freewheeling diodes?

I'm designing a PCB using a DRV8801PWP. However, I'm a bit unsure if I need to add freewheeling diodes myself or not. In the typical applications, they don't show them, but I didn't found either an ...
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Transistor H-Bridge Help

I have designed this H-Bridge Circuit using two NPN transistors and two PNP transistors. My plan is to use an Arduino to control the base current in all of the transistors. My supply voltage is 12V, ...
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1 answer
67 views

5 level inverter using H-bridge with mosfets

I want to make a 5 level using H-bridge. I have made H-bridge using MOSFETS and it works. My problem comes when adding output of these two H-bridges to get 5 voltage levels. I am adding the outputs ...
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2 votes
1 answer
111 views

Is this a reasonable way to drive an H-bridge?

I currently need to drive a 400W (12-48V) DC motor via an H bridge. Therefore, I set out to think of a way to drive the motor itself and came up with something like this: I use drivers to drive the ...
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Difference between Quad Half-Bridge and Dual H-Bridge driver ICs from the control point of view

There are driver ICs consisting of either quad half-bridge (such as DRV8932) or dual H-bridge (such as DRV8428E). From the control point of view, what is the advantage of choosing quad half-bridge ...
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2 votes
1 answer
209 views

H- bridge requirements

I'm wondering, if in a basic H-bridge, the n, and p type fets need to be the same size, current handling wise. And why is it quite difficult to find the same size n and p type MOSFETs Is it enough to ...
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H-bridge bypass when powered off

I have a need to insert a motor driver between a motor and an existing motor driver. I need my circuit to become transparent or fail out of the way when powered off so that the existing motor driver ...
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4 answers
127 views

Methods for high current DC motor emergency cutoff

I need to add a secondary means of cutting off power to a motor for safety reasons if a state change is detected on a 3.3V logic level signal while it is operating. The requirement I have is that it ...
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1 answer
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Driving a Peltier Module via N-channel MOSFET H-Bridge

I'm working on a circuit to control a heating/cooling element (Peltier module) using an H-bridge. I'm using FDP8447L for that purpose. My Peltier is rated for 6 amps current and 15.4 Volts. The gate ...
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1 vote
1 answer
228 views

P-channel high side mosfet getting hot when not in use

My high side mosfet shown as Q2 in the diagram gets very hot when not supposed to let any current through it. When DIR1 is high and DIR2 is low current is supposed to run through transistor Q1 through ...
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MC33887: Zener diode on output avalanche protection

In the datasheet of the "MC33887 5.0 A H-bridge with load current feedback" there is a section on "Output avalanche protection", in which it is explained that an inductive flyback ...
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H-bridge with 0-3.3 V output

I'm planning on using a H-bridge to generate biphasic pulses using two PWM output from MCU with 3.3 V logic. The output voltage of the H-bridge is fed into a differential input of a high voltage piezo ...
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Multiple brushed DC motors controlled by a small microcontroller

I have to control 10 brushed DC motors from a microcontroller. I am using an H-bridge driver for each motor which controls the speed (PWM), direction (High/Low), and enable/disable. So, for each motor ...
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H-bridge motor driver high-side MOSFET problem

I'm trying to build a h-bridge motor driver with MIC4605-1YM: The problem is that as soon as I connect power the high-side MOSFET of the active side blows up. I have tested the signals without the ...
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1 answer
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Choosing the right diode for my H-bridge?

I'm making a H-bridge for a 12V DC-motor. I have to choose a flyback diode but I have a hard time determining the motor's back EMF voltage. I'm assuming this voltage won't be more than double the ...
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Review My H-Bridge Design?

Background Info: I need to drive two 24VDC brushed motors (SDS4360-24-120F) with a dual H-bridge circuit using 5V control signals. Initially a few L298N module were used but they all eventually fried ...
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Rated drain to source voltage of a power MOSFET sustaining back EMF of solenoid

I have an H-bridge that is using 4 n-channel MOSFETs with max rating of 500 V 100 A drain to source driving a large inductor/actuator reliably. I'd like to find a cheaper MOSFET since the 100 A is ...
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1 vote
1 answer
103 views

H Bridge Using Momentary Switches

I'm trying to get back into electronic projects and I'm now working on controlling the direction of a DC motor with 2 push button momentary switches. Motor is 6-8 amps, switches are rated for 18 amps. ...
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2 answers
107 views

2N2222 Always On Issue

I am designing an H-bridge with Arduino to control a small 12V motor. I made a custom PCB with the following schematic however I have a problem with the 2N2222 transistor. I am using them as a switch ...
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3 answers
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H-Bridge Problem: Vgs dropping with increased motor speed

I am developing an H-bridge for use with 48VDC brushed motors. The bridge is implemented with discrete DPAK N-channel MOSFET transistors driven by an HIP4081AIBZ. I have not yet fitted RC snubbers ...
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