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Old 18th December 2008, 02:09 PM   #1
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Join Date: Dec 2008
Default Design help needed for IRS2092

Hello All,

I am currently in the planning stages for a 50 watt x 2 channel class d amplifier. This amplifier will be based around the IRS2092 driver IC. I need to add volume and equalizer control, and I am stumped with what IC to use. I originally wanted to use the BA3812L 5 band IC, but I can't find a vendor that will sell small quantities of them. The other chip I was looking at is the TDA1524A, which does volume and tone control.


After digging around the IRF site, I found they used a CS3310 digital volume control IC for one of their application notes. These chips all have different output levels, and I am unsure what will work as a preamp.


Also, I need to build a SMPS to operate this amplifier. I calculated that I need a +/- 35 VDC power supply for 100 watts. I am going to run the amplifier off of 120 VAC from a wall outlet. Does anyone have any suggestions on which type of SMPS to use? Flyback, buck, boost....I am not sure which route to go.


I am looking for all constructive criticism I can get. Any input would be helpful, thanks!
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Old 2nd January 2009, 11:06 PM   #2
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Join Date: Jan 2007
for smps,use half bridge.
you're going to find some precious information at ir site.
Use unregulated power supply with stiff capacitance at secundary.
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