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Class D Switching Power Amplifiers and Power D/A conversion

TPA3116D2 Amp
TPA3116D2 Amp
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Old 4th October 2017, 12:26 AM   #10131
alijoseph is offline alijoseph
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Helpful thread.
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Old 4th October 2017, 08:47 AM   #10132
JonesySA is offline JonesySA  Australia
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I have modded a few 50x2 TPA3116 boards. I am now looking to build a amp with more power. My speakers are usually 6-8ohm. Would there be any benefit to PBTL, i.e. two mono-blocks or a 2x100 board?
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Old 4th October 2017, 10:47 AM   #10133
carpne is offline carpne
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Quote:
Originally Posted by JonesySA View Post
Would there be any benefit to PBTL, i.e. two mono-blocks or a 2x100 board?
From TI datasheet:

"The TPA31xxD2 are stereo efficient, digital amplifier power stage for driving speakers up to 100W / 2 Ω in mono"

Cheers

j.R.c
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Old 6th October 2017, 07:20 AM   #10134
JonesySA is offline JonesySA  Australia
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Originally Posted by carpne View Post
From TI datasheet:
"The TPA31xxD2 are stereo efficient, digital amplifier power stage for driving speakers up to 100W / 2 Ω in mono"
Cheers
j.R.c
Thanks. I read over the datasheet. My understanding is both channels are run parallel thus 2 Ω. So if you connected 6 or 8 Ω speakers you effectively gain nothing?
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Old 6th October 2017, 07:49 AM   #10135
doctormord is offline doctormord  Germany
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Correct.
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Old 7th October 2017, 07:41 PM   #10136
WhiteRhino is offline WhiteRhino  Israel
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Hi, Jayjay,

The PBTL power for 4R and 8R will be similar to BTL since it is limited by the voltage not current. PBTL will be slight better due to lower RDson.

reg,
Paul Chen

Audio Applications Engineer

Dallas TX
parallel TPA3116D2 - Audio Amplifiers Forum - Audio Amplifiers - TI E2E Community

Last edited by WhiteRhino; 7th October 2017 at 07:45 PM.
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Old 11th October 2017, 06:00 AM   #10137
xrk971 is offline xrk971  United States
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TPA3116D2 Amp
It's been a while since I have been on this thread... off in SE Class A land for over a year. Can't believe this thread now has 2M+ views. Anyhow, going down memory lane, I plugged in my Sanwu 3116 with Bluetooth the other day, and have to say, it sounded darn good and quite powerful with an HP 19v laptop SMPS, and connected to my phone via BT. I had it hooked up to a Tang Band W5-2143 in an XKi cabinet.

This is the amp (from DrMord's site - where he shows a nifty low noise fix which I have not yet implemented):

Click the image to open in full size.

Refreshing how the on-board buttons actually work to change volume, play/pause, and change tracks.
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Old 11th October 2017, 07:14 AM   #10138
JonesySA is offline JonesySA  Australia
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Originally Posted by xrk971 View Post
Anyhow, going down memory lane, I plugged in my Sanwu 3116 with Bluetooth the other day, and have to say, it sounded darn good and quite powerful with an HP 19v laptop SMPS, and connected to my phone via BT.
I had a similar recent experience which has prompted me build another tpa3116 while I watch 3255 development. My last few amps were the well regarded AudioBah which is some years ago now. Is there a consensus on what the best TPA3116 board is now? i.e <$20
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Old 11th October 2017, 06:11 PM   #10139
xrk971 is offline xrk971  United States
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Quote:
Is there a consensus on what the best TPA3116 board is now?
Not sure it is consensus, but my opinion is the Sanwu blue monoblock PBTL board for $5. It has tight clean circuit. Gain is a bit high so change resistor to make 22dB.

For example:
Aliexpress.com : Buy TPA3118 PBTL mono digital amplifier board 1X60W 12V 24V POWER AMP from Reliable power amp suppliers on The sky one
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Old 11th October 2017, 06:21 PM   #10140
pboser is offline pboser  United States
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TPA3116D2 Amp
Quote:
Originally Posted by xrk971 View Post
Not sure it is consensus, but my opinion is the Sanwu blue monoblock PBTL board for $5. It has tight clean circuit. Gain is a bit high so change resistor to make 22dB.

For example:
Aliexpress.com : Buy TPA3118 PBTL mono digital amplifier board 1X60W 12V 24V POWER AMP from Reliable power amp suppliers on The sky one


Do you prefer 3118 to 3116?
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