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.
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.
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
http://www.diyaudio.com/forums/class-d/116056-class-d-amp-irs2092.html
Best Regards,
Savu Silviu
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
http://www.diyaudio.com/forums/class-d/116056-class-d-amp-irs2092.html
Best Regards,
Savu Silviu
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 🙂
Regards Baldin 🙂
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 🙂
Regards Baldin 🙂
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.
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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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...).
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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