2x100W TPA3116D2 (2 chips, each in PBTL)

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#102

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#103
Daijoubu said:
I've narrowed down to Rubycon ZLH and Panasonic FR, 1.488A/17 mOhm and 1.95A/18 mOhm respectively
10k hours rating, bit of overkill but I know I'll never need to replace them ever.

Are they suitable for that application? The panny is 22cents more expensive but with a higher ripple current rating.

Thanks!
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I use Rubycon ZLHs exclusively on my Class D amps (sometimes FC if I'm out of ZLH) in values close to the datasheet (in other words, not in large values like 1000uF or 2200uF, but 330uF or 470uF). For the input caps, MKT1822 2.2uF and I find the combination is pleasing to me, though the sound can be described as "sharp," as opposed to "warm" with some sibilance at times. I like the detail that results, very resolving, which to me is the whole reason to go with Class D amps in the first place.
 
#105
zek said:
Does anyone have some experience with this board?
2x100W TPA3116 D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino | eBay
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Yep, lots do. Poultygeist was the first I read of using it, I think. Mine is connected to a Chromecast audio but not currently in use. It sounds good. It won't do 2x100 watts into 8 ohms. It needs a 4 ohm load to approach that. I have read that it isn't really suited for high output use. The solder tracks are thought to be "puny" by some. Used at 16-19V and with normal indoor listening levels it's fine.
 
#108
Jerms said:
.... It won't do 2x100 watts into 8 ohms. It needs a 2 (not 4) ohm load to approach that. I have read that it isn't really suited for high output use. The solder tracks are thought to be "puny" by some. Used at 16-19V and with normal indoor listening levels it's fine.
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Put some 105dB/W(very sensitive) 2ohm speakers on them and come back to tell us, it wasn't loud. 😉
You will get about 100W from pbtl tpa3116 at 2ohm, 50w@4ohm, 25W@8ohm with 26V. With 18V you get about half.

The 2 chip 2x100w boards are only louder then the 1 chip boards, when you put a 2ohm load/speakers on them.
 
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#109
JSXINGHE XH-M543 Modification

Hi Guys

I had traced XH-M543 V9 (Single Chip BTL 2ch) board.
I 'm going to modify following pints.

  • Reduce the gain (Input sens. 20mV --> 1V)
  • Switching frequency change (400kHz --> 1.2MHz)
  • Muting Driver Circuit Modification (1Cap to Active Circuit)
  • MLCC to anther type (Audio Signal Coupling Caps)
  • Paste Silicone Grease on thermal PAD
Modification information will be described in following posts soon...
 

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#110
If I compare the schematic with the PCB I miss the C34 330uF used for muting during power up. I had the previous version with only a resister from mute to ground and that was giving a loud plop during power off. I wonder if this has been improved with this version.


Was the heatsink removable by removing only screws?
 
#112
HX-M543 Modification

I'm modifying Single TPA3116D2 Board XH-M543.

Modification details will be described in following page...

TPA3116D2 2 channel Amprefire Modification



Current modification plan as follows...
 

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#115
pietjep said:
If I compare the schematic with the PCB I miss the C34 330uF used for muting during power up. I had the previous version with only a resister from mute to ground and that was giving a loud plop during power off. I wonder if this has been improved with this version.


Was the heatsink removable by removing only screws?
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I have found C34! Its one of the 3 capacitors near the connector for the power.

If I look to the PCB, it looks as if R21 was not between R5 and C34, but between R5 and the Mute pin (pin 12 of the TPA3118) It looks as if R21 is used to limit the current to the mute pin.

And are you sure R1 (near the power LED) and R20 is connected to VCC? Because on the PCB it goes down with a via, just before the big VCC track. Wasn't it connected to C34?
 
#116
pietjep said:
I have found C34! Its one of the 3 capacitors near the connector for the power.

If I look to the PCB, it looks as if R21 was not between R5 and C34, but between R5 and the Mute pin (pin 12 of the TPA3118) It looks as if R21 is used to limit the current to the mute pin.

And are you sure R1 (near the power LED) and R20 is connected to VCC? Because on the PCB it goes down with a via, just before the big VCC track. Wasn't it connected to C34?
Click to expand...


I made a X-Ray Like View. It shows R21 is connected in series to the MUTE pin. R20 and R1 are tied to VCC..(May be I need some fix on my schematic ...)
 

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#119
I have bought a m190 amplifier module with two chips. It works flawlessly however it suffers from pop at turning off. No hiss, no noise nothing al all. I am using a 12V 5A switching power supply. The only problem that is bothering is, as I mentioned, a very subtle pop exactly when I turn the amplifier off. I have spent a lot of time reading your posts but could not find a solution. Could you please help me find a solution? Thanks in advance. Image is taken from Amazon but it is exactly the module that I have.
 

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