I'm trying to find some chip to start a design with. I haven't designed anything in D-class and I'd like to see how horrible radio transmitter I get.
I'm planning to make universal amplifier or active speaker amplifier and in the front there will be DSP to make cross-over, magic and coffee 😉
I have short list of requirements:
- Clipping indicator. I don't have spare ADC or CPU cycles for to process this.
- 25+W/ch power. I'd like more if I end up driving subwoofer
- Single side power. I'd like to get away with cheap Chinese led power supply
What I've found is so far TPAxxxx can give me 2/3 of requirements but no clipping control. If I'm going to use some LED PSU, and it just doesn't can't handle the load, it is essential to get the info to turn down the volume.
So do you have any good candidates to take a look?
I'm planning to make universal amplifier or active speaker amplifier and in the front there will be DSP to make cross-over, magic and coffee 😉
I have short list of requirements:
- Clipping indicator. I don't have spare ADC or CPU cycles for to process this.
- 25+W/ch power. I'd like more if I end up driving subwoofer
- Single side power. I'd like to get away with cheap Chinese led power supply
What I've found is so far TPAxxxx can give me 2/3 of requirements but no clipping control. If I'm going to use some LED PSU, and it just doesn't can't handle the load, it is essential to get the info to turn down the volume.
So do you have any good candidates to take a look?
Besides a clipping indicator, your PS must be able to comfortably handle power amp needs or you´ll be driving all the time at the edge of the precipice.
What are specs of the typical
What are specs of the typical
you have in mind?
You could look into the TI TPS series and the Zoudio amp that uses them. These have some degree of autonomous self-protection / speaker-protection. Unfortunately, as digital input amps, I've come to understand that because they cant do global feedback, they are far less immune to power supply quality issues. So they wouldnt match well with your "cheap Chinese led power supply " requirement.
I run both mine on a prohibitively expensive, couldnt even practically manufacture anymore, fully analog power supply. (Which if someone did, would cost many times more than the amplifier itself) The TPS amps I have ran OK on a Liteon 19V laptop brick which, knowing Liteon, is probably a much better designed PSU than the one for powering LEDs.
Regardless, the TPS amps are interesting units and worth looking at. Unless you simply MUST have analog input drive.
I run both mine on a prohibitively expensive, couldnt even practically manufacture anymore, fully analog power supply. (Which if someone did, would cost many times more than the amplifier itself) The TPS amps I have ran OK on a Liteon 19V laptop brick which, knowing Liteon, is probably a much better designed PSU than the one for powering LEDs.
Regardless, the TPS amps are interesting units and worth looking at. Unless you simply MUST have analog input drive.
My plan is to use something like 24V 10A Meanwell copy power supply.
I couldn't find any TPS amplifiers. TPSs chips usually are low drop-out regulators. I found those TAS amps and those are really impressive.
Also I found TPA3255. It has ridiculous amount of power, clipping warning and is something which I could use. Only drawback is the gate driver PSU for 12V. I think I'll put this on schematics and see what happens when other components are found.
I couldn't find any TPS amplifiers. TPSs chips usually are low drop-out regulators. I found those TAS amps and those are really impressive.
Also I found TPA3255. It has ridiculous amount of power, clipping warning and is something which I could use. Only drawback is the gate driver PSU for 12V. I think I'll put this on schematics and see what happens when other components are found.