TPA3116D2 Amp

[horst303]

And what exactly is that "lady" in India expected to do with these on her skillet?

melt components off PCBs for re-sale/re-badging
I tried to find the picture showing this but I gave up after 30 seconds so you'll just have to imagine a woman, or man, sitting by a steel drum fire with a plate of PCBs scraping off components.

 

[jean-paul]

That would be a chinese lady ....

The United States produces more e-waste than any country in the world. Tracking down America's electronic waste:

http://kcts9.org/programs/circuit/tracking-down-america’s-electronic-waste

 

[Gumel]

Помогите Plz

Good afternoon.
I would like to read your forum, but I understood not so much interest. My native language is russian.
Need power for Wharfedale Diamond 10.1
I found several options prompt that will be better.
options:
1) The easiest option https://ru.aliexpress.com/item/NEW-...Amplifier-TPA3116-Advanced-2/32751974338.html ? spm = 2114.13010308.0.0.PcTOkv & detailNewVersion = & categoryId = 63701
2) there must be thinking the body, etc. https://ru.aliexpress.com/item/New-...32666906834.html?spm=2114.13010308.0.0.ПсТОкв
3) Buy 2 amplifier and connect one to your channel https://ru.aliexpress.com/item/New-...16-Mono-Channel-Digital-Power-Audio-Amplifier -Board-BTL / 32699597173.html? spm = 2114.30010708.3.10.gmnHHU & ws_ab_test = searchweb0_0, searchweb201602_2_10065_10068_10084_10083_10080_10082_10081_10060_10061_10062_10056_10055_10037_10054_10033_10059_10032_10099_10078_10079_10077_10093_426_10103_10073_10102_10096_10052_10050_10051, searchweb201603_1 & btsid = 7ae17bcb-1074-47f4-8b1f-64be5d4e97e6
4) https://ru.aliexpress.com/item/XH-M...ifier/32549982777.html?spm=2114.30010608.3.46. Stjzdx & ws_ab_test = searchweb0_0, searchweb201602_2_10065_10068_10084_10083_10080_10082_10081_10060_10061_10062_10056_10055_10037_10054_10033_10059_10032_10099_10078_10079_10077_10093_426_10103_10073_10102_10096_10052_10050_10051, searchweb201603_1 & btsid = a47d9953-d158-4374-a8bf-b97f27e7eca2
5) Set of 2 baby, by the way recommend them here https://ru.aliexpress.com/item/DC-1...igital-Audio-Power-Amplifier-Board-Amp-Module /32698656210.html?spm=2114.30010708.3.2.5W7X4A&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10068_10084_10083_10080_10082_10081_10060_10061_10062_10056_10055_10037_10054_10033_10059_10032_10099_10078_10079_10077_10093_426_10103_10073_10102_10096_10052_10050_10051,searchweb201603_1&btsid=7c31b4a2-71ae-4bfb-99d8-c8f16c80fda7

Meals will be 24 volts.

 

[Gumel]

sorry
links:
1) https://www.aliexpress.com/item/NEW...Amplifier-TPA3116-Advanced-2/32751974338.html
2) https://www.aliexpress.com/item/New...igital-Power-Amplifier-Board/32666906834.html
3)https://ru.aliexpress.com/item/New-...er-Audio-Amplifier-Board-BTL/32699597173.html
4) https://ru.aliexpress.com/item/1PC-...2-24V-Audio-Amplifier-Module/32741916215.html
5) https://ru.aliexpress.com/item/DC-1...r-Amplifier-Board-Amp-Module/32698656210.html
6) https://ru.aliexpress.com/item/1PCS...r-Amplifier-Board-Amp-Module/32684432563.html

 

[ravels]

Wharfedale Diamond 10.1 are a 6-ohm bookshelf speakers with relatively low sensitivity (86dB). If you want to use a TPA3116 based amp, the combination of the best board with the best power supply should give you about 2x40W, though 2x30W is probably a better limit with low amount of distortion.

The first link you have is actually a good solution. All you need to do is to add a 24V power adapter. Make sure to get at least a 24V 5A power adapter like this one.
Even though the amp will probably not use more than 60-80W, you need a power supply with higher current rating to avoid clipping. If you already have a 19V-24V power brick, you may want to try it first to see if it meets your needs.

IMHO, Wharfedale Diamond 10.1 deserves a slightly better amplifier. High frequency distortion on TPA3116 is a bit too high for me, at least for listening to music at home, though it's probably good enough for most people.

sorry
links:
1) https://www.aliexpress.com/item/NEW...Amplifier-TPA3116-Advanced-2/32751974338.html
2) https://www.aliexpress.com/item/New...igital-Power-Amplifier-Board/32666906834.html
3)https://ru.aliexpress.com/item/New-...er-Audio-Amplifier-Board-BTL/32699597173.html
4) https://ru.aliexpress.com/item/1PC-...2-24V-Audio-Amplifier-Module/32741916215.html
5) https://ru.aliexpress.com/item/DC-1...r-Amplifier-Board-Amp-Module/32698656210.html
6) https://ru.aliexpress.com/item/1PCS...r-Amplifier-Board-Amp-Module/32684432563.html

 

[jwicaksana]

For the first board: I’m 99% confident that the modification will work; anyway, you could ask jwicaksana if he did it and how it worked; removal of the capacitor is not difficult (you can also cut it in the middle and then remove each part separately).

I did remove it while I was doing some other mods, the sound changes for the better, and maybe removing that cap helps in this regard. Sorry can't help much here.

 

[Gumel]

АНГЛИЙСКИЙ
Thank you so much. Is there an alternative to this amplifier? Nourish going 24v 4a. Do not listen to loud, power should be enough.

 

[millstonemike]

One of the safer bets is a Sanwu blue TPA3118 mono board or two.
https://de.aliexpress.com/item/TPA3...40789.html?detailNewVersion=&categoryId=63701

J.

No knock against the specific board, but others have noticed that two separate boards (e.g., two mono amps to create a stereo amp) have an issue. Since the two chips are not synced as master/slave they run at different frequencies. Even set to the same freq., there's always a difference if not synced and this causes noise problems in the overall system.

 

[Jerms]

No knock against the specific board, but others have noticed that two separate boards (e.g., two mono amps to create a stereo amp) have an issue. Since the two chips are not synced as master/slave they run at different frequencies. Even set to the same freq., there's always a difference if not synced and this causes noise problems in the overall system.

That might explain some "puttering" noises in my setup. Though I haven't done the gain reduction mod yet and it is just noticeable. I have four of them running my main system but only two per PSU.

 

[irribeo]

I don't think anybody ever posted hearing "the issue", canceling of frequencies would be the result I believe, less noise or less music, less output

 

[millstonemike]

I don't think anybody ever posted hearing "the issue", canceling of frequencies would be the result I believe, less noise or less music, less output

Sorry, I should explain. The "others" I'm referring to posted on the Parts Express Tech Talk Forum.

If you think this is a problem in your multi-amp system, try powering only one amp at a time and see if any of the amps still produces the suspect noise.all but one amp

The issue is the that the switching frequency (e.x., 400Khz) of the digital amps are not synced. A possiboe explanation of the noise is is "beating". I forget the mathematical proof but when two frequencies f1 & f2 are near, the summation (radio interference) of each frequency results in a frequency equal to the average of the two freq.'s and an amplitude modulation equal to the difference of the two frequencies.

An aural example is a twin engine airplane overhead. The plane seems to drone with a slow rising and lowering of the engine noise. The pilots try to throttle the two engine's RPMs close to one another but they're never exactly in sync.

 

[irribeo]

And was it solved on PE forum by syncing the amplifier chips? Or was it the switchingfrequencies of 5 smps's (including source) that created the noise ?

 

[millstonemike]

And was it solved on PE forum by syncing the amplifier chips? Or was it the switchingfrequencies of 5 smps's (including source) that created the noise ?

I don't recall. I don't believe chips on different boards were sync'ed with each other. Certainly multiple chips on a single board are/should be sync'ed - many examples here of fixing that issue.

 

[irribeo]

Fixing that issue on the double chip ampboards in this thread was not about beat noise.

This screeching sound might be beat noise ? But he also makes funny sync connection, not like TI suggested, however we don't know if chips are TI in first place, so sync might need different connection ?

https://www.youtube.com/watch?v=16k4goWRT4o

 

[millstonemike]

Fixing that issue on the double chip ampboards in this thread was not about beat noise.

This screeching sound might be beat noise ? But he also makes funny sync connection, not like TI suggested, however we don't know if chips are TI in first place, so sync might need different connection ?

https://www.youtube.com/watch?v=16k4goWRT4o

I'm don't see the video is the same problem.

And IIRC, there was a knowledgeable poster citing problems with boards in close proximity (as in mounted in the same enclosure). I don't believe he resolved the issue and believed it was due to the lack of sync'ing between boards. And I thought his recommendation was never to do it.

 

[irribeo]

The screech is connecting two output pins. "In theory" there could be beat noise, but "in theory" one can also say to look elsewhere for noise problems.

TI support forum:

The main reason for the Master/Slave configuration is to avoid beat noise. However, if the placement and layout is done properly, the system should not have beat noise even if all the AMPs are configured as Masters. Sometimes the SYNC trace between the MASTER and SLAVE can be inconvenient to rout if the layer/space is limited. I would avoid a long SYNC trace to prevent potential EMC issue.
reg.
Paul Chen
Applications Engineer
Dallas TX USA
​

 

[fulvio]

Beat frequencies is a synonymous of intermodulation and can be caused only by non linearity.
One non linear component is, for example, the protection diode present, most of times, on the power supply line of the board and is crossed by the currents of the two IC's (in a dual chip board); maybe shorting this diode can help.
Another possible cause of non linearity (and intermodulation) is the power supply (if it contains active components and is used to power more than one board); using good capacitors (low ESR and ESL at switching frequency) is important.

 

[irribeo]

Internally the voltage is regulated, I would think external voltage needs to drop a lot to change internal regulated voltage ? Bad decoupling ?

(the remark about chip origin I made because there are a lot of funny looking tpa3118 chips but also because the videolink seemed to show me a 436kHz switchingfrequency, that might be funny too)

 

[fulvio]

Internally the voltage is regulated, I would think external voltage needs to drop a lot to change internal regulated voltage ? Bad decoupling ?

Voltage supply of the TPA3116 output power mosfets is not regulated.
In any case, a similar warning can be found also in the IR papers, concerning IRAUDAMP7:

...."In relative terms, interference between channels is most significant if the relative frequency difference is within the audible range.
Normally, when adjusting the self-oscillating frequency of the different channels, it is suggested to either match the frequencies accurately, or have them separated by at least 25kHz".......

 

[irribeo]

I would be interested in posts about beat noise actually being the problem causing audible noise, so I hoped for a PE link, but my guess is it is all in theory like the posts here. TI almost advices to not connect 8 ampchips in post I quoted and use 8 masters in same amp enclosure instead. Maybe the audibility is very low if it does occur and getting the 8 chip amp 1 master and 7 slaves approved by Fcc is far bigger problem. A little spread in switchingfrequencies might even help to stay within Fcc limits LOL

Can't remember posts about actual beat noise problems with SystemD irs2092 either, so might not be identified or audible as a problem or only becomes really audible with megawatt amplifiers or very high gain ? SystemD LiteAmp is very low gain.