TPA3255 - all about DIY, Discussion, Design etc

[hansueli]

My 2nd 350w 42v power supply does work really good looks exactly the same I just found this new tpa3255 board. Looks like 3e audio but much cheaper

 

[zek]

I just found this new tpa3255 board

Link, please.

 

[Yatsushiro]

On AliExpress here:

https://www.aliexpress.com/item/100...!sea!FR!858029048!&curPageLogUid=WYjlIxoU5EsG

 

[zintolo]

I see a totally different price at that link.

 

[hansueli]

39.99$ or what did you see?

 

[zintolo]

Around 50 USD.

 

[hansueli]

see my screenshot ;-) its 39.99$

 

[zintolo]

Yes, that’s the point.
I’m saying the price I see on mine is 25% higher. Strange.

 

[zek]

What I see ...

 

[bucks bunny]

This may relate to the country your are starting inquiry from

 

[zintolo]

You know, Italy is a risky country. 😁

 

[mahtew]

Eu countries have added Vat tax to total price. That's the difference

 

[mamocel]

Yes... 20%...😩

 

[rdalem]

Does anyone here have experience with this smps?

https://www.ebay.com/itm/3550825070...486&ssuid=&var=&widget_ver=artemis&media=COPY

 

[CyberPit]

I bought this TPA3255 Board.

Four capacitors beside heatsink are series-connected 4700uF/25V.
So a total of 4350uF capacitance is embedded.
It's not a good idea from the point of view ESR.

By the way, another complaint...
The speaker output makes a pop noise during Power-up and Power-down. So I developed an automatic reset control circuit.
This can eliminate pop sound without manual reset switch control operations.

Hope this will help you easier.

CyberPIt

 

[merlin el mago]

That's real? https://es.aliexpress.com/item/1005004968490914.html?ug_edm_item_id=1005004968490914&pdp_npi=3@dis!EUR!36,08€!22,73€!!!!!@2141236e17012778187724448dcb4c!12000031190167324!edm!!&edm_click_module=alg_product_l1r2_1375904380&abexp_id=180343&abexp_bkt=629483&abexp_rels=458348&creative_img_ind=1&edm_log_data=edm-item-list-left-one-right-two.store-product-log-link&tracelog=rowan&rowan_id1=aeug_edm_41180_1_es_ES_2023-11-29&rowan_msg_id=***@COWS_41180_$cee2bfd915a9418e9bea5e337f0bc1d9&ck=in_edm_other&gatewayAdapt=glo2esp

 

[asuslover]

That looks surprisingly identical with this:
https://www.parts-express.com/Dayto...rd-with-Tone-and-Volume-Co-325-501?quantity=1

 

[merlin el mago]

Half price!!!

 

[merlin el mago]

Can be modified for headphone amp?

 

[xrk971]

You don’t want to use a 150W class D for a headphone amp. There will be some residual Class D switching noise (beat frequency from 400kHz and other sources) you might hear, and in event of a pop from turn on/off or when accidentally hot plugging a jack, it will blow your headphones in an instant.

You want Class A and 1W or so for a headphone amp.