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Class D Switching Power Amplifiers and Power D/A conversion

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Old 27th February 2010, 06:12 PM   #21
bwaslo is offline bwaslo  United States
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I am impressed by the TI amps, even being "feedback before the inductor" types. My only experience with a Tripath amp is the little TA2024, which is ok, but not enough power to really judge. Sometime I'll have to hear some of their more powerful types.

I have a couple of Icepower amps and some Hypex UCD amps, also extremely nice amps. UCD is probably the most ingenious amp circuit I know of, elegant and effective;

But the TI amp is rather amazing -- that they could come up with an amp design that sounds this good and is this powerful -- with all semiconductors in one chip -- is something I'd never have thought possible. Add to that the built-in SMPS design like authlxl's and suddenly power amplifiers become much more reasonable to deal with. There's really no point in using a passive crossover anymore, power amp channels and power supplies make multi-amping a no-brainer. Authlxl, I also like the +/-15 power supply outputs provided on your amp, that will come in very handy for powering the active crossovers -- how much current can that supply, by the way?
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Old 28th February 2010, 03:35 AM   #22
authlxl is offline authlxl  China
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Thanks for you care,+/-15 power supply can deliver out 500mA current,+5V power supply can deliver out 500mA too,we design this parts on board aim to anyone use it easily for preamp like active crossover or DSP processor.
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Old 7th June 2010, 05:06 PM   #23
authlxl is offline authlxl  China
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Default Revise and finished bi-amp module

We have found some shortage for the previous mdule,we revise and make it as bi-amp module.

Include one 550W/4ohm/1%THD+N class D amp(300KHz-400KHz PWM frequency) and one 50W/8ohm/0.5%THD class AB amp.suit for active speaker amp,class D drive woofer and class AB drive tweeter.

We have manufactured two times,total 200pcs,no problems found,when the FLB circuit use high quality capacitor,output wave good(THD/POWER and THD/FREQUENCY) in audio range.

Class D amp can be set as 200W-550W/4ohm or 100-300W/8ohm.
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File Type: jpg DSCF1245800600.JPG (104.5 KB, 255 views)

Last edited by authlxl; 7th June 2010 at 05:09 PM.
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Old 7th June 2010, 05:38 PM   #24
authlxl is offline authlxl  China
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Default Wire connection diagram

Upload the wire connection diagram.
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File Type: pdf 600W BI-AMP WIRE CONNECTION DIAGRAM.pdf (9.3 KB, 153 views)
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Old 8th June 2010, 03:30 AM   #25
authlxl is offline authlxl  China
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Default Revised wire connection diagram

Resived wire connection diagram upload
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File Type: pdf 600W BI-AMP WIRE CONNECTION DIAGRAM.pdf (9.5 KB, 125 views)
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