pwm modulator for ir2010

TargetAmplificadores · 15th December 2011, 10:37 AM

hi friends, I build my first amp class d. and as a basis I will use ir2010 with irf640, so I'm in doubt on some points:

I use self-oscillating modulator or PWM modulator with comparator or sigma-delta modulator?
I'm having trouble getting a perfect triangle wave in PWM module to use. I am using Orcad 16.3

I look for something more complete for I will ride with a dc-dc source and use in the car but do not want anything smd, I will not focus on the size.

What you tell me friends?

Thank you until the moment

luka · 15th December 2011, 08:35 PM

you could use 4060 with xtal and use one of 4060's output, run it via RC to get a perfect triangle wave, but amp will be clocked. Few guys before me used this, I tried and works great and it is always stabile

apexaudio · 09:05 PM

LabGrupen use this triangle oscilator for class TD, with 74HC74 and LM318 frequency is over 600kHz.
In thread Class D Amp with LM566,LM393 and 2XIRF530 post #39 you can find FBT schematic (250kHz)

TargetAmplificadores · 21st December 2011, 03:32 PM

Hello friends, sorry for the delay in answer them because I was without internet, but then ...
I've been doing some simulations in Orcad, but it did not anything right, because I think the model IR2010 spice I need not work in version of ORCAD I have, I will test these circuits that you guys passed me and then pass the results. I need to find a similar program that has the IR2010 in the library, because with budgeted will not leave anything.

even more

15th December 2011, 10:37 AM	#1
TargetAmplificadores diyAudio Member Join Date: Dec 2011 Location: Atibaia - SP	pwm modulator for ir2010 hi friends, I build my first amp class d. and as a basis I will use ir2010 with irf640, so I'm in doubt on some points: I use self-oscillating modulator or PWM modulator with comparator or sigma-delta modulator? I'm having trouble getting a perfect triangle wave in PWM module to use. I am using Orcad 16.3 I look for something more complete for I will ride with a dc-dc source and use in the car but do not want anything smd, I will not focus on the size. What you tell me friends? Thank you until the moment

15th December 2011, 08:35 PM	#2
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	you could use 4060 with xtal and use one of 4060's output, run it via RC to get a perfect triangle wave, but amp will be clocked. Few guys before me used this, I tried and works great and it is always stabile __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

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21st December 2011, 03:32 PM	#4
TargetAmplificadores diyAudio Member Join Date: Dec 2011 Location: Atibaia - SP	Hello friends, sorry for the delay in answer them because I was without internet, but then ... I've been doing some simulations in Orcad, but it did not anything right, because I think the model IR2010 spice I need not work in version of ORCAD I have, I will test these circuits that you guys passed me and then pass the results. I need to find a similar program that has the IR2010 in the library, because with budgeted will not leave anything. even more

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