Questions tagged [h-bridge]
A circuit which allows power to be applied to a load in either direction. Often used for reversible motor control.
2
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1answer
50 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 BS170
D3/D4 are 4 x 4148
the 2 ...
1
vote
3answers
42 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 ...
0
votes
0answers
54 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 ...
2
votes
1answer
42 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.
...
0
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2answers
63 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 ...
0
votes
1answer
33 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" (...
0
votes
1answer
64 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 ...
2
votes
1answer
46 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)
0
votes
2answers
116 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 ...
1
vote
3answers
156 views
H-bridge with 7815 regulator
Could anyone explain to me why my 7815 regulator gets hot and eventually blows up ??
0
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0answers
29 views
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 ...
0
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0answers
26 views
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
-1
votes
0answers
65 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 ...
1
vote
1answer
85 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 ...
1
vote
0answers
49 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 ...
3
votes
2answers
146 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 ...
0
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0answers
51 views
Why the mosfet's gate resistor show this current consumption?
Here is my H-bridge circuit.
and here is the graph of the current of R1, with LTSpice
My calculation for the bases of the pnp & npn
Vsupply -((Vbase Q3 - Vbe) / R5) x R3)
24V -(((3V3 - 0.65)/...
0
votes
1answer
30 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 ...
0
votes
0answers
45 views
STM32 PWM Idle State not persisting
I am making a half bridge driver that is being driven by an STM32. It uses TIM1 and the PWM from channel 1 and its complementary signal (the complementary signal is driving the low side of the bridge)....
0
votes
2answers
73 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
9
votes
2answers
2k views
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 ...
0
votes
1answer
43 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” ...
-1
votes
0answers
30 views
Why the half bridge bootstrap driver (L6384E) doesn't output anything no matter what?
I've been trying for the past few days to get the L6384E half bridge driver to work, the schematic provides the following circuit suggestion:
This below is the circuit that I am using, and all I get ...
0
votes
1answer
61 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 ...
1
vote
1answer
62 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.
...
-1
votes
0answers
28 views
SMD NP0 soft termination or SMD Film capacitor for SMPS filtering and AC switch loop
Hello I have a problem where I've to select a suitable decoupling/bypass capacitor for the AC-path for the switch noise for the 400V switching H-bridge where I need low height of components. Where the ...
0
votes
2answers
116 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/...
0
votes
1answer
55 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 ...
1
vote
1answer
73 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, ...
0
votes
1answer
56 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 ...
0
votes
4answers
305 views
How to control a motor driver (BTS7960) without PWM
Using a Raspberry Pi 3B+, I need to control a motor which works in 12V and can draw up to 2A. It doesn't use PWM. It just goes in one direction or the other (reverse/forward) when interchanging the +/-...
0
votes
2answers
100 views
MOSFET's getting too much heat up without any load
I am working on inverter, MOSFETs in h-bridge inverter goes heat up without any load attached. I also attached pull-up and pull-down resistor on it. here is my circuit duagram.
EDIT
Sources of PMOS ...
2
votes
0answers
67 views
MOSFET burn down due to droping logic level voltage [duplicate]
I made 2 PCB, one is a logic driver with NAND Schmitt trigger (74HC132D & CD40106B) to drive FORWARD and BACKWARD of H-bridge channel, the other board is the H-bridge Power MOSFET, which used 4 P ...
0
votes
2answers
108 views
H-bridge motor controller [closed]
I made a circuit but I am not sure it is going to work. The circuit is supposed to drive a 36 V 28.5 A motor. I am having trouble finding out if applying 5V to IRLZ44PBF would open it fully and allow ...
0
votes
1answer
150 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 ...
-1
votes
2answers
116 views
mosfets in h-bridge get hot on idle load
I'm trying to build cheap H-bridge driver to operate under 12-24 input voltage. I used 12v regulator as separated Vgs voltage driver, also to increase load current and I paralleled two MOSFET with ...
0
votes
2answers
193 views
pull-push gate driver for H bridge circuit
To drive power MOSFET following circuits with different pros and cons has been used
type A
type B
type C
type c which is called pull-pusher gate driver can used either P or N mosfet
in h-...
0
votes
1answer
80 views
Need help with troubleshooting an H bridge circuit
I designed an H bridge using the DGD0506A gate drivers.
https://www.diodes.com/assets/Datasheets/DGD0506A.pdf
I used the FDMC7696 for both high side and low side mosfets.
I went with the suggested ...
-1
votes
2answers
118 views
How to get Convert DC to AC for higher frequency with H-Bridge? [closed]
Require High Frequency AC supply (300 V, 1-2 kHz), as of my knowledge increasing frequency AC-AC is hard compare to DC-AC. So I decided to input DC and get AC of 300 V, 1-2 kHz.
Please help how to ...
1
vote
1answer
175 views
MOSFET H-Bridge Design - Capacitor/Diode/Resistor Selection
welcome to my first post!
I am designing a small 3-phase Brushless DC Electronic Speed Controller (ESC). The design utilizes 3 half bridges and a FAN7388 driver IC. The FAN7388 datasheet has a ...
0
votes
1answer
312 views
Ultrasonic cleaner control with Arduino
I'm trying to build a small sized ultrasonic cleaner. I bought a couple ultrasonic transducers (ranging between 40kHz - 102kHZ and 15 - 35 watt) which I want to play around with.
There are already ...
0
votes
1answer
62 views
H-bridge driver circuit where voltage is higher than control ic
I am using an H-bridge to give a clock time signals.
The H-bridge is controlled from an ESP8266 (Wemos D1 mini board)
The clock requires an 18V signal (alternating every minute for a fraction of a ...
0
votes
2answers
88 views
Electromagnet Polarity Reversal Doesn't Matter?
I am working on an engineering design project for school which uses the electromagnet linked below to "lock" a door. The problem is that the electromagnet remains energized or magnetized even after ...
0
votes
1answer
115 views
use bjt or mosfet in h-bridge with inductive load?
is it better to use 2 pnp bjt in high side and 2 npn bjt in low side of an inductive load drive h-bridge ?
or using 2 pmos in high side and 2 nmos in low side of h-bridge?
what are the advantages ...
0
votes
0answers
69 views
Dual H bridge circuit design
For a project I need to design a dual H bridge to drive two motors with the specs provided below:
Output speed: 150±10%rpm
No_load Current: 200mA (Max)
Stall current: 4500mA(max)
...
7
votes
4answers
2k views
Why don't flyback diodes in H-bridge damage power supply?
I'm currently learning about driving a small DC motor (~ 5V). My research so far indicated that a L298N might be a good choice to quickly get something up and running. However, I'm also trying to ...
1
vote
2answers
109 views
T.I H-Bridge design with No protection diodes?
I am still on my struggle trying to design my own Brushed DC H-bridge with all N-MOS, still in the research stage and burning mosfets left and right.
I have come across this T.I design ,relatively ...
0
votes
2answers
115 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 ...
0
votes
1answer
83 views
H Bridge only working one way
I have this schematic. My problem is it only turns the motor when I supply the 5v to the right transistor (Q2). I remove the 5v and put it on Q1 and nothing. I've replace all parts and still does the ...
-1
votes
3answers
238 views
How to protect H-bridge from burning
I'm building an H-Bridge to drive a 5v DC motor.
We made the circuit with SMD components And everything works properly.
But the problem arises when the motor output gear is held manually.
The motor's ...
