No, it is a split supply amplifier.
It requires: +/- 12VDC (for input and modulator - approx 100mA) and +/- 60VDC (for output stage)
ah a shame, my interest is battery power so single supply. Clearly a lot of interest though. Make a thread?
High power and battery power isn't the best mix.
Also, batteries normaly have a pretty high Zout at high frequencys, making them everything but ideal for audio, and absolutely not for class-D.
I agree, it's important to use a "stiff" low output Z power supply for Class D amps.
What SMPS are you using and how large capacitor bank?
What about rail pumping?
BTW: Instead of using the Class D photogallery as a show place you should open a thread about the amp in the Class D forum or in the Marketplace.
Stein
.... I'm using a 64V 1.2 kWh custom pouch cell lithium ion pack that has a 50A BMS, I'm sure without the BMS it could push a terifying amount of current. The bus capacitors on the amps handle the high frequencies. Its for portable stuff I currently have 6 channels of TPA3521 (parts shortages prevented TPA3255) running on it using a buck converter.
What is the Zout vs frequency? And how does the noise spectrum look?? Normally lithium batteries Will have quite high levels of noise.
"65 dB PSRR(BTL,1 kHz,No InputSignal)" https://www.ti.com/lit/ds/symlink/tpa3255.pdf I'm sure not enough to cause anything mesurable at the output of the amplifiers compared to running from a SMPS.
I have now made my Starkrimson to be dual mono with the addition of a second power supply. I have also installed the rail capacitor upgrade on top of each module. It has made a nice improvement to the sound, more than I expected. I have also attached a pic of the rear of the case showing the WBT0703 binding posts.
Attachments
Nice, regarding the PSU, I would go for 2 Single rail with LLC circuit. (one per module)
I am testing some PSU with my PA5 (TPA3255 amp.) but it gives some idea :
Max VDC for The TPA3116 is 26V.
If you are looking for a very good PSU, I will for :
1) https://www.audiophonics.fr/fr/alim...-dalimentation-decoupage-300w-24v-p-6196.html
2) https://recom-power.com/en/products/ac-dc-power-supplies/ac-dc-off-board/rec-p-RACM230-24SG.html?1
The Connex uses zero-voltage switching half bridge resonant topology , it is a nice Audio PSU (see my thread with the PA5).
The RACM230-24 uses an Active LLC PFC controller and works nice too but is less Powerful.
