UCD 25 watts to 1200 watts using 2 mosfets

[rhythmsandy]

no that didn`t workout as im still getting a squarewave inthe output with posive peak 36nV and lower peak at -4nV with a little bit of shootout at leading edge of the squarewave.

 

[rhythmsandy]

I feel something wrong with the IR2110 model. Does anyone has got the working spice models?

 

[kees52]

Tried simulating but im getting error as there are no lib files for the IR2110

Did t work?, I have get it working.


put smpsadd in sym directory and lib or sub in lib.

regards

 

[rhythmsandy]

Did t work?, I have get it working.


put smpsadd in sym directory and lib or sub in lib.

regards

I tried that also but this time im getting this error.

 

[rhythmsandy]

but is my schematic right?

 

[rhythmsandy]

How is the stability of this amplifier for proper home theater subwoofer application?

 

[Dimonis]

Make and test. Then will tell us.

Better use Microcap simulator than Ltspice - for audioapplications its more native.

 

[rhythmsandy]

Make and test. Then will tell us.

Better use Microcap simulator than Ltspice - for audioapplications its more native.

Ltspice is free and quite executed many schematic with ease. I dont deny but Microcap is a bit expensive.

If the IR2110 executes properly in LTspice then it should be fine. Again i need to manage new libraries for the Microcap and adapting to new software takes some time as well.

 

[rhythmsandy]

im getting this output now what is wrong in here

 

[Pafi]

im getting this output now what is wrong in here

You dont have gate driver supply voltage in the scematic at all.

 

[rhythmsandy]

Thats what im getting at Hi in and Lo in pins of IR2110

which driver voltage are you talking about?
all the mosfets and both the ICs are powered properly

 

[rhythmsandy]

This is the output from the G pin of the comparator.

 

[Dimonis]

9 and13 legs are shorted . No +12V on 9 leg.

 

[rhythmsandy]

do i need to short 9 and 13? add supply of 12V for 9leg?

I have used this circuit

http://www.diyaudio.com/forums/atta...atts-1200-watts-using-2-mosfets-amplid300.png

 

[Pafi]

do i need to short 9 and 13? add supply of 12V for 9leg?

I have used this circuit

http://www.diyaudio.com/forums/atta...atts-1200-watts-using-2-mosfets-amplid300.png

You shorted pin 9 and 13. Do not short them! And tie 12V to pin-9!

Your schematic was good earlyer in this aspect. Restore it!

Your schematic is actually dimensioned better than the original which was explosive.

 

[rhythmsandy]

You shorted pin 9 and 13. Do not short them! And tie 12V to pin-9!

Your schematic was good earlyer in this aspect. Restore it!

Your schematic is actually dimensioned better than the original which was explosive.

Pin 9 and 13 are connected through a cap and I have removed that cap and added +12V to the VDD but the output not as expected.

 

[Pafi]

Pin 9 and 13 are connected through a cap and I have removed that cap and added +12V to the VDD but the output not as expected.

No, they are still connected via wires, but 12 V is left unused.

In post 4477 it was good. Remove the spider web and redraw that part!

 

[Dimonis]

......... but the output not as expected.

Blindman......

 

[kees52]

im getting this output now what is wrong in here

I did also test with the models, and get strange outcomes, I do stay in discrete comparators because it is more easy with supply.

and I get almost -100 dB distortion with a fase shift version amp with bessel low pass and no analog feedback... The bessel
low pass needs 24 dB octave.

 

[andrewlebon]

Proex