Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [h-bridge]

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

Gets its name from the H-shape as it is typically drawn on a schematic.

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Need help choosing H bridge driver

I am trying to decide on what H-bridge driver (for MOSFET) I should pick. I am completely new to this field so I might say something wrong. So I decided to make a full H-bridge using 4 N-Channel MOSFETs, IRF1405. In order to do this I need an…
subz
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IR2184 Driver Failure

I'm working on designing a half H-bridge circuit around an IR2184 Mosfet driver chip. I've had limited success with it. Ideally it will allow me to drive a 12V/4A bilge fan when I get it working. One iteration had the fan wanting to kick over but…
Laveur
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IRS2003 half bridge driver

I am fairly new to half bridge drivers and understand the concept of a full bridge. I was looking at building a basic full bridge using 2 half bridge drivers, the driver IC's I was going to use were the international rectifier IRS2004 (datasheet…
Ant
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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 probe (I only have one differential probe), and I got…
dumbstudent
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L298 H-Bridge not working

I have an L298 H-Bridge, but I cannot, for the life of me, get it to work. I have connected Vss to +5v, GND to ground, Input 2 to +5v, Enable A to +5v, Input 1 to ground, Vs to +5v, Output 2 to a motor terminal, Output 1 to the other motor terminal,…
Void Star
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Is a bootstrap capacitors always required for mosfet drivers?

I am designing a H-bridge to drive a motor that is running at 12V / 3A. To prevent shoot-through I decided to select a IC with integrated dead time - IR2111. What I got so far is the following circuit (showing just one half of the full bridge to…
PetPaulsen
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How to convert DC to AC with high efficiency?

Currently I am working on an project to feed back the output from a solar panel to the grid. One of the circuits used is the H-bridge. This part is used to convert an arbitrary DC signal to an AC signal. The first circuit was the following: The…
user90392
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Concerns in H-bridge switching times with common (one) gate control line

I have a FET based H-bridge being controlled by a micro. I was worried about software errors being able to turn on the top and bottom FETs at the same time, so I opted for the control scheme below for each half of the bridge. While this works fine,…
TheLastBert
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Why flyback diode is preferred over fwd body diode of MOSFET in case of H-Bridge?

Why flyback diode is preferred over fwd body diode of Mosfet in case of H-Bridge? Can fwd body diode of MOSFET can serve the purpose of flyback diode?
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Only spikes in H-Bridge

I'm implementing a 300V MOSFET H Bridge with IR2110 driver. I decided to first try it in low (and safe) voltages, thus replacing the 300V with 12V as shown in the diagram. The MOSFETs I'm using are P20NM60FP, with a VGS of 5V. Ideally, I should have…
Emi Ibañez
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H-bridge: Augmenting output from an existing IC

I've got a bunch of these integrated H-bridge & driver IC's in my stock and wish to use them in an upcoming design: http://www.toshiba.com/taec/components2/Datasheet_Sync/201006/DST_TB6593FNG-TDE_EN_27195.pdf However, these IC's can only drive…
smoothVTer
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BJH H-bridge going in reverse but not forward, LL transistor overheating

I've built one of this BJT H-bridge to control a DC motor in an old R/C car of mine, but I'm having problems with it and wanted a few tips to help me debug the board. The motor is a 2-wire DC with about 1.2A stall current. Below is my…
Ricardo
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What is the output of an H-bridge?

I was watching this video tutorial on H-bridges. The video presenter said that when one input is HIGH and the other LOW, the output of the H-bridge is Vcc/2, while in the other case, it is -Vcc/2. In other sources, I saw that the outputs are Vcc and…
user1584421
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What is this connection for in this H-Bridge circuit?

I saw a different H-bridge circuit than the H-bridge circuits I’ve seen before. What could the connection to the MCU in the lower left of the circuit be for?
harmonica
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H Bridge problem

I have been banging my head on this puzzle for a few days now, need some help from the experts... Here is the schematic of my first attempt at an H bridge for an RC car. The motors ( two in parallel) draw 2.5A max when stalling. Vcc2 and Vcc5 are…
GiuBu
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