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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High voltage and current
I have a DC motor that needs and works nearly 400v and 20A. I chose FDL100N50 for n-channel mosfet also IXTK40P50P for p-channel mosfet.
I connect a 4n35 optocupler for output of every mosfet.
Are ...
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Why ACS712 is abruptly dropping its voltage output?
I have built a board as shown in the images and the schematic below. I know that according to the datasheet when no current is flowing through the ACS712 it should output something around 2.5V always. ...
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1answer
58 views
Simplifying H-brigde circuit
I am currently trying to build a PWM H-bridge, it has a power line of 12 V and the arduino uno provides the PWM. The MOSFETS I have are: IRLZ44S (N-channel) and FQD11P06TM (P-channel). Basically, the ...
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H-Bridge Low Side Sense Resistor - Position of Resistor and Bulk Capacitance
My question regards the considerations required in determining the location of a current sense resistor on the low-side of an H-Bridge. I've presented two scenarios.
Details: The H-Bridge load is a ...
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Converting boost controller to sync boost controller using H-bridge or 2 gate drivers
I am trying to reduce power losses in a boost led driver. For example TPS92690, uses a MOSFET and a diode for boost mode. Is it a bad idea to use H-bridge instead, or two gate drivers (one in straight ...
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2answers
56 views
Why isn't fast decay mode on an h bridge damaging
I'm struggling to understand how fast decay mode works on an h-bridge used for stepper motors . Particularly I've been looking at fast decay mode in this data sheet: http://www.ti.com/lit/an/slva321/...
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Can a L293D H-bridge be used for this application?
I'm building a circuit that is needed for a logging device we have. With some of our sensors the current is going in one direction and with others the other way around. That means that we have a ...
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32 views
AC MOSFET H-bridge
Would appreciate an explanation of how this circuit works. It is a MOSFET H-bridge that takes a square wave input and either passes it through unchanged or changes its phasing 180 degrees. The “...
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How does a electropermanent magnet work?
I’m trying to wrap my head around electropermanent magnetism. I read this wonderful PhD Thesis by Ara Knaian as well as details the history of this concept as well as Kyle Gilpin, Ara Knaian, and ...
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What's wrong with my IR21531D H-bridge gate drive?
I'm new to here. I am recently making an H-bridge inverter with IR21531D (here is the data sheet). I connected them this way:
When I measure the Lo and Ho pin with passive probe and differential ...
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2answers
46 views
H-bridge design for Peltier
I am using a pelter module to cool a chamber, I also use the same module to heat the chamber just by reversing the voltage to to.(separately tested and working). This lead me to look for a H-bridge IC ...
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Alternate uses for Gate Driver - Driving a Load without External IGBT or FET
What issues would one encounter by using a gate driver IC to directly drive a load instead of using it to drive transistors?
For consideration would be the very affordable Infineon 2EDN752x series ...
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driving high side H bridge inverter
i still get confuse to understand the high side driving of H-bridge mosfet, it is said that to drive the high side, voltage at its gate have to be greater than the drain voltage, is it true? so when i ...
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1answer
27 views
Question about the role of specific element in a circuit (H Bridge)
I am currently studying different ways to design an H - Bridge and came across this circuit. I have a good idea how the bridge works except for the two transistors on the bottom that I have red ...
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1answer
36 views
What is miller shoot through voltage (aka cross conduction)?
Im studying mosfets switching characteristics and one thing I happen to come across is the concept of "cross conduction".I searched around the web and couldnt find answer to my question.Kindly read ...
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1answer
43 views
Channel 4 in STM32 Advance Timers TIM1 and TIM8 [closed]
There are advance control timers in STM32 family as in STM32F407 and these are specially suited for 3-phase (or 1-phase also) motor control applications using full H-bridge. These timers provide ...
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1answer
47 views
Calculating H-Bridge without motor specifications [closed]
I am currently calculating elements for an H-Bridge for brushed dc motor and PWM speed control that operates on 6V and maximum current of 2A. However I want it to work with different 6V brushed DC ...
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25 views
Shorting the output of both the channels of L298N
Suppose I started with a project requiring the control of motors and ended with using L298N in my project, realizing that my motor only takes around 1.5A when on load.
Now, with time I realized that ...
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1answer
84 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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3answers
53 views
What would happen to the voltage or current flowing through the motor in an h-bridge
I was wondering if some one could help me understand what would happen to the motor if I suddenly change the rotation from clockwise to anticlockwise or vice verse in an H-bridge configuration, would ...
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1answer
65 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
156 views
How to reverse direction of stepper motor with flip-flop
I am trying to reverse the direction of a stepper motor. The stepper motor drives a scanner head and when it gets to the end, I want it to reverse direction. I have some photo interrupters that ...
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78 views
H bridge design for bipolar motor
I'm working on a dual H bridge for a bipolar stepper motor. I found these two designs. I would like to know which design would you guys recommend and why? and if there is any component that might be ...
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2answers
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L298N H-Bridge : Powering 4 motors using (6) aa batteries vs (4) aa [closed]
I am currently wiring up my raspberry pi, H-Bridge and (4) 3-6v ratting motors. My question is, how will performance change based on me using 6 or 4 batteries to power motors? I noticed some tutorials ...
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1answer
102 views
Freewheel diodes and shoot-through prevention required on this low-voltage H-bridge?
I have built the following h-bridge:
VMOT1 is at logic level (3.3V)
FWD and REV are driven by MCU (no PWM in the scope examples given)
Q7/Q8 are DMP1045
Q9/Q10 are BSS138
D3/D4 are 4 x 4148
the 2 ...
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3answers
56 views
Can I drive a high-side N-channel MOSFET with NPN transistor and extra battery? (H-bridge)
I read discussions about only using N-channel MOSFETS in h-bridge circuits. I often see things like optoisolators listed. Example: driving high-side N-channel MOSFETs in H-Bridge
But why can't I just ...
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59 views
Why H-bridge isn't working properly?
I am making a circuit to control a motor using an Arduino UNO and an H-bridge IC, but it's not working, rather something strange is happening.
Circuit's scheme:
When the motor is connected to pins 3 ...
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1answer
50 views
Cost vs quality and performance of H-bridge
I'm working on a project where low cost and small BOM is just as important as optimal functionality. The goal is to drive a cheap DC motor (aka 'yellow motor'), in two directions, optionally with PWM.
...
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2answers
75 views
H Bridge extreme voltage drop
I was trying to implement a H-Bridge circuit but had a lot of failures. I'm not really good with electronics, just some basic knowledge.
So I've started by creating an buffer to switch the full ...
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1answer
43 views
How to measure current on low voltage/current brushed motor driven by H-Bridge?
I have a gearbox which transforms the rotational movement to linear movement. It drives a pin which moves back and forward using a DC motor.
I need to know when the pin reaches the two "end-stops" (...
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1answer
71 views
H bridge Inverting Wave issue sound from gate driver
[![enter image description here][1]][1]
I am trying to drive H bridge using the following configuration
I am producing an inverting.
4 * N channel mosfets Fdd8447
gate driver ic TC4428 (used ...
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1answer
61 views
What methods exist to introduce dead-time in a MOSFET H-bridge? [closed]
What methods exist to introduce dead-time in a MOSFET H-bridge?
(to prevent shoot-through)
(other than software methods, or using MOSFET driver ICs with internal dead-time generators)
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2answers
175 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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3answers
177 views
H-bridge with 7815 regulator
Could anyone explain to me why my 7815 regulator gets hot and eventually blows up ??
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L298N motor driver output error
I had worked previously on a project which used a L298N motor driver to control motors.Datasheet Link.
I have now completed my project and started with the production phase of it. But while I was ...
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Simulate H Bridge in Pspice
I want to simulate an H-bridge in pspice but it doesn't work and Z3 and Z6 (High side and low side IGBTs) can not drive at the same time.
Here is my schematic
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299 views
MX1508 motor driver module
I recently bought this MX1508 module from AliExpress.
I'm very impressed by its working given the low product cost. I would like to implement this in my next design, but I'm unable to find any ...
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1answer
210 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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70 views
DC motor lock controlled by H-bridge
I'm trying to control a DC motor by H-bridge in my board.
The motor works well by PWM signal but, in breaking mode, only the lower switches are on, motor is not locked completely.
When I turn the ...
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2answers
215 views
Single Phase Full Bridge Inverter - I Can't figure out which PWM Control Technique is used
I have the following Single Phase Full Bridge Inverter and a PWM control method which in my language is called "asymmetric mode". I understand how it works but I can't find any documentation written ...
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1answer
71 views
Single PWM input signal to H-Bridge DC/AC inverter
Im attempting to follow some of the multitude of h-bridge designs out there to create an inverter using power mosfets. While I can get the circuit to invert the polarity using the design in the first ...
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2answers
94 views
antiparallel led circuit
Is it possible to glow the both LEDs simultaneously in an anti-parllel circuit?
I tried with H-Bridge but I am not able to do it simultaneously. Please help me to solve this problem
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2answers
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Is this a case of ground loop?
I'm trying to power a 24V DC motor using 2x 12V batteries, an Arduino and a Cytron MD10C Motor Driver. I followed the description on Cytron's website for how to connect the Arduino and the motor to ...
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1answer
57 views
L293D Enable pins can reduce chip heat?
I use a L293D to drive a 7.4V (280mA/phase) stepper motor.
I rotate the small motor 1 rev per DAY.
The L293D is hot all the time even though the motor turns only once per day.
I saw there are “Enable” ...
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1answer
106 views
DC motor H-Bridge - Snubber Cap
I have breadboarded a simple H-bridge shown further down using the mosfets linked below the schematics.
The prototyping motor is a DC 12V 1A (NO LOAD) Motor Pictured below:
Ultimately I ultimately ...
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1answer
76 views
H-Bridge Adjustable Slew Rate: Why is a decoupling capacitor needed?
I am designing a simple 3-phase inverter for BLDC Motor control. For that purpose, i plan to use a IFX007T from Infineon. The slew rate is controlled via a resistance connected in series to SR pin.
...
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2answers
355 views
What PWM inputs are needed to drive a 3 phase BLDC using the HIP4086 IC driver chip?
I am building a motor controller for a BLDC (w/ Hall sensors) using a Teensy. My circuit looks like the typical application diagram in the datasheet (https://www.intersil.com/content/dam/Intersil/...
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1answer
72 views
Simulating 3 phase mosfet bridge with LEDs
I have a commercial 3 phase BLDC motor driver board (TI DRV8323 BoostXL) and I want to write a firmware from scratch. For testing, I want to make sure I open/close the mosfets in correct order. I am ...
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1answer
76 views
Turning an H-bridge/motor off
I'm trying to understand what happens at various points in a circuit during drive-coast operation (and also drive-brake, but haven't got there yet). Imagine Q1 and Q3 are on, and Q2 and Q4 are off, ...
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1answer
72 views
Interfacing with (Two) Full-Bridge PWM Motor Drivers to Control a Stepper Motor
I am working to interface with an existing PCB with on-board Full Bridge PWM motor driver chips, which drive a stepper motor. The interface lacks any kind of standard step (clock) or direction signals ...
