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Class D Switching Power Amplifiers and Power D/A conversion

TPA3250 somebody is listening?
TPA3250 somebody is listening?
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Old 20th February 2019, 10:22 PM   #871
petersv is offline petersv  Norway
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Does anyone know if it's doable to add autosense on/off to this amp?
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Old 21st February 2019, 01:15 PM   #872
Wiliks is offline Wiliks  Slovakia
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Join Date: Mar 2012
cherman i will get to it during weekend, i'm quite busy atm

hansueli i think you can even find fxaudio tpa3250 without PSU as well, and yes tpa3255 is more powerfull and better amp, but its also bigger, and to release its full potential you need also bigger heatsink (from top as the thermal pad is on top there) and 48VDC and very strong power supply, which you can't hide to simple "notebook-like" brick as you can with TPA3250. And honestly i do not need 2x300W amp for my 30W PC speakers monitors

petersv you can, but you would need some extra circuit for that.

Last edited by Wiliks; 21st February 2019 at 01:17 PM.
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Old 21st February 2019, 01:55 PM   #873
chermann is offline chermann  Austria
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Location: Vienna
Quote:
Originally Posted by Wiliks View Post
cherman i will get to it during weekend, i'm quite busy atm

hansueli i think you can even find fxaudio tpa3250 without PSU as well, and yes tpa3255 is more powerfull and better amp, but its also bigger, and to release its full potential you need also bigger heatsink (from top as the thermal pad is on top there) and 48VDC and very strong power supply, which you can't hide to simple "notebook-like" brick as you can with TPA3250. And honestly i do not need 2x300W amp for my 30W PC speakers monitors

petersv you can, but you would need some extra circuit for that.
thanks mate
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Old 21st February 2019, 04:40 PM   #874
forestsgump is offline forestsgump
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Join Date: Dec 2017
Quote:
Originally Posted by Wiliks View Post
2forestgump:

i do not get absolutely any pop when turning off, but i got very weak pop when turning on
Wiliks, for example: if turning-off is due to sudden unplug of the power supply, will there be any pop?
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Old 22nd February 2019, 11:11 AM   #875
petersv is offline petersv  Norway
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Quote:
Originally Posted by Wiliks View Post
petersv you can, but you would need some extra circuit for that.
Sure, that won't be a problem, igf you could point me in the right direction for some info on this I would really appreciate it.
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Old 22nd February 2019, 02:13 PM   #876
aks is offline aks
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@Wiliks ,
how much improvement in measurement by increasing switching frequency from 450k to 600kHz??
how to increase switching frequency from 450k to 600kHz ??
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Old 22nd February 2019, 02:46 PM   #877
chermann is offline chermann  Austria
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Location: Vienna
Quote:
Originally Posted by aks View Post
@Wiliks ,
how much improvement in measurement by increasing switching frequency from 450k to 600kHz??
how to increase switching frequency from 450k to 600kHz ??



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TPA3250 somebody is listening?
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