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Old 25th June 2010, 05:33 PM   #1
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Question IR2113 - good driver IC for a first project?

I was searching for some nice high voltage mosfets on the site of a local electronics store and suddenly my eyes fell on something else. There said: IR2113PBF - $3.44. I didn't know they carried those...

So what i want to know is whether it's a good driver IC for my first class D project. I want to use TL494 for PWM, and outputs will be IRF530s for initial testing, then whatever high power FETs i can lay my hands on. Now i also have a 'scope so things should work out nicely.

What do you think? I'm aiming for 250W/8-ohm or 400W/4-ohm. I'm still unsure of the TL494, if you have a better idea let me know.
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Old 25th June 2010, 08:58 PM   #2
savu is offline savu  Romania
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I have experimented onece with TL494 for class D.\
Not the best choice.
Concider IRS2092 and some IRFB4227 or IRFB4127 ... it should do fine for a first project and it will reach the required power level.

Take a look at this thread. It will shead some light on you'r project
Class-D Amp with IRS2092

Best Regards,

Savu Silviu
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Old 26th June 2010, 08:20 AM   #3
Baldin is offline Baldin  Denmark
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IRS2092 seems like the way to go for a first time project ... haven't tried it, but it takes few components to make a working design, and you get lot's of help in the data sheet and AP notes ....

Don't go for the TL494 .... it's not directly intended for class-d and there will be a lot of things to consider ... haven't really seen any good designs using that!

IR2113 or IR2110 is also a good choise, (use IR2110 myself) but it requires a separate modulation stage ... which gives freedom of design, but takes a lot more practice and knowledge to make work ....

You'll se a lot of designs her where you will be able to get sound through, but it will not be HiFi .... noise, distortion at higher freq, stability, EMI etc. ...... it takes a lot of time to make it really work as well as say an good AB amp! .....

But go for it ... it's also quite fun

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Old 26th June 2010, 08:20 PM   #4
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The IRS2092 looks easy to use but i hate ordering stuff from abroad even if it's from trusted companies like Farnell or TME. I found the IR2113 locally, so i'll buy a few and see what i can do with them.

Building a discrete modulator doesn't look like too difficult of a task. Maybe harder than class AB but i've had it with those things that don't do much else than generate lots of heat, and in this place extra heat is the last thing that i need. I'll have all summer to burn anyway so might as well learn something useful.

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Old 27th June 2010, 08:57 AM   #5
Baldin is offline Baldin  Denmark
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Looking forward to seeing the result
Go for it
/Baldin

PS. Just got my own design (OP275, MAX913, IR2110, IRFB5620) up and running in stereo. (Built into an old Yamaha surround decoder)
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Old 27th June 2010, 11:27 AM   #6
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That looks quite nice. I see you are using a regular mains transformer not a switchmode supply - i'll probably go for the same configuration. There's nothing wrong with 50Hz transformers (apart for their weight...).
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Old 11th July 2010, 09:09 PM   #7
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The 2113 is a nice driver. It has a few 'features' that you might have to iron out in the modulator design, but it (2110 actually) has served me well.
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Old 12th July 2010, 09:52 AM   #8
luka is offline luka  Slovenia
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my vote is IR211x
that will make good amp
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