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Old 28th November 2007, 03:43 AM   #1
zox2003 is offline zox2003  United States
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Default IR2010 amplifier-New Project

After I played with IR2104(IR2104 and IRF540) and got him up and running I decided to do some corrections in circuit and build new amp using IR2010 as MOSFET driver.Currently I am working on modulator schematic (attached).

Any comments or suggestions are very welcome.

Thanks
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File Type: pdf modulator schematic.pdf (47.9 KB, 1086 views)
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Old 28th November 2007, 10:47 AM   #2
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Hi... and power estage, not included in circuit?
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Old 28th November 2007, 02:20 PM   #3
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Quote:
Originally posted by lindomar
Hi... and power estage, not included in circuit?
Do you see any power stage in the circuit? So, OF COURSE that there's NO power stage included.
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Old 28th November 2007, 02:25 PM   #4
zox2003 is offline zox2003  United States
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Like I said this is just modulator.Power stage is made with IR2010 and pair of IRF540's.

I have second version of modulator using LM311M and CD4069 invertor.

What is your suggestion? This schematic or combination of LM311 and CD4069?

Some people reported "ringing" effect from LT1016 because of his speed...


Thanks
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Old 28th November 2007, 02:31 PM   #5
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Imho LM311 would-be quite enough for selfoscillating topology
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Old 28th November 2007, 02:38 PM   #6
zox2003 is offline zox2003  United States
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Also today I am getting samples from TI of TL3016 which is drop in replacement for LT1016 but some people reported better results with TL then with LT1016...

Thanks
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Old 28th November 2007, 09:51 PM   #7
zox2003 is offline zox2003  United States
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Any comments or suggestions?
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Old 29th November 2007, 03:08 PM   #8
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can you post your power stage schematic. I'am currently working with the IR2110 and it's not power up the mosfets. The are not even warm with no load connected to them
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Old 29th November 2007, 03:41 PM   #9
zox2003 is offline zox2003  United States
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I am using IR2010 not IR2110.
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Old 3rd December 2007, 05:26 AM   #10
zox2003 is offline zox2003  United States
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OK,

i have first results which are not very good.
Let me explain my chain (it got changed from original schematic):
My modulator is LM311 and CD4069 (inverter).Feedback goes form output (speaker) terminal to non-inverting input of LM311.Audio input is on Inverting input of LM311.Output is IR2010+pair of IRF540's.

Sound I got from this amp sounds kind of distorted.I can not really say at this point how much but maybe a little bit.My output fets are getting really hot (even on low audio input) and my 12V regulator (78m12-SMD version 0.5A) is getting hot too-regulator is used for IR2010 and CD4069 inverter.

Any help?

Regards
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