10 amp 12 volt motor driver ic

desilve i accept that i dont hav a lot of concept but i tried googling for 4 hours and got some info and again i find it too costly to go for readymade motor driver boards so i came up here and tried to find help now would u pls help me i tried on my side

Well many motor drivers are "public domain" so to speak, their circuit is published and you can use it. This is because there is no witchwork in it. Sometimes it is the selection of parts, i.e. which transistor to take. As prizes differ considerably and their can be bargains, thi smost likely determines the cost of your controller... Here a quit old-fashioned solution http://www.ikalogic.com/H_bridge_1.php

This is something very simple, but tricky: Well, I said hundreds....

thanks ill try ! i need a 10 amp controller can i parallel them ?

Yes and no!

It is better to choose more powerful transistors (and cheaper anyhow). A design with FETs will look slightly different. I just provided examples! Google for “H-bridge FET” - you should find lots…

You probably will not be able to make your own H-bridge any cheaper than the one from Robokitsworld (and it would save time and $$$ if you were to make a mistake trying to make your own). The least expensive controller would probably be to use two 12v relays to control each 12v motor. Two relays like below along with a transistor/resistor/diode for each relay could be used to control one motor foward/reverse. There could be other solutions, but they may require more knowledge and skill than you currently have.


The first thing I found - can be simplified however. You will need no FET driver if you use a "logic level FET"...

@desilve thanks ill check it out @zoomkart ill also try your solution actually i wanted to trymaking one but ill fira=st try your idea



Quit cheap! But I cannot find a current rating. I doubt it will be able to switch 10A....

Here some Logic Level MOSFETs in TO-220 housing between $1 and $2

irl 640 200v 17A irliz 34n 55v 22A irli 540n 100v 23A irliz 44n 55v 30A

Quit cheap! But I cannot find a current rating. I doubt it will be able to switch 10A....

It is all somewhat "iffy", but I just based the suggestion on the relay based "skidsteer" motor controller below that robokitsworld already sells. A lot will be based on the $$$ available for the project and parts availability locally in India.




thanks desilva this was one of the answer i expexted eversince i started the topic ill post once i compleate in about 3 days !!! :) and any oyher circuit diagram would be appreciated and thanks !! :) :) :) :) :) :) :) :) :) :) :)

@zoomkat yes but there is a problem it says "Provides automatic breaking to motors in normal condition " does that mean it is going to stall the motor my doubt is that the load current of mmy motor is 9.5 amp and i think the stall current is more than the load current

The H-bridge design (below) in the open servo project is one of the more clever I've come across (assuming it actually works).


(assuming it actually works).

Where comes the doubt? The only "new" thing is a classical shunt current monitor... This is recommandable to identify a stall situation...

Where comes the doubt?

Only from the fact that I haven't personally built that H-bridge myself and verified it works.

Maybe this is one of the best things that you can use: http://www.pololu.com/catalog/product/707/specs

Motor driver: VNH3SP30 Motor channels: 2 Minimum operating voltage: 5.5 V Maximum operating voltage: 16 V1 Continuous output current per channel: 9 A Peak output current per channel: 30 A Continuous paralleled output current: 15 A Maximum PWM frequency: 10 kHz Reverse voltage protection?: Y2

One chip is >$10, so under this presumption it is a fair prize... The chip most likely contains absolutly clean switching and current protection... The VNH2 seems to dissipate hardly any power..

....one of the more clever I've come across

Oh, I only see that now.. there will be a small delay to switch the corresponding transistor, so the complementary transistor has time to switch off...

yes that is gud but ill anyways try making that myself i just wanted to make one myself :) :) :)

I have little experience with high current devices, but the danger of a switch through seems to be the ship's kobold of all professional H-bridge design...