±50V SMPS for Quasar Amps (& others)

[Cristi]

Originally Posted by tvicol

We had few minor pcb mistakes which have been corected and we'll release gerbers (from corrected version 1) to public domain.
Tibi

i just count about 20 mistakes, without having the board or gerbers. just from the pictures. or maybe they were there by purpose ?

Originally Posted by jkraxi

As long as romanian-chinese people have a better pcb for our source, we will release our version 1 pcb to public. and, of course, no mistakes and even more ready tested.

you just found-out that have a better source ? you should knew this before, but... probably you also have a good source, since 5 euros was way too much compared to your 3 USD price tag.

so, when we can see the gerbers ? maybe pcb file too ?

[darkfenriz]

dudaindc

Why didn't you connect IR2110's COM pin directly to low side source?
Keep in mind, that Vss and COM do not need to be at exactly the same potential, so you could connect COM to low side source and Vss to local ground.

[dudaindc]

Originally Posted by darkfenriz

dudaindc

Why didn't you connect IR2110's COM pin directly to low side source?
Keep in mind, that Vss and COM do not need to be at exactly the same potential, so you could connect COM to low side source and Vss to local ground.

Darkfenriz
As noted at the beginning of the thread, this is not my project so I will leave this answer to Tibi.
Thanks.

[tvicol]

Originally Posted by darkfenriz

dudaindc

Why didn't you connect IR2110's COM pin directly to low side source?
Keep in mind, that Vss and COM do not need to be at exactly the same potential, so you could connect COM to low side source and Vss to local ground.

darkfenriz,

I don't get your observation. Can you please be more precise, where we should connect com (IR2110 pin 2) ?
You mean to float drive the mos-fet's ?

Regards,
Tibi

[darkfenriz]

To GND0, as close to Q102's source as possible.
That's how I think it should be done.

[tvicol]

Originally Posted by darkfenriz

To GND0, as close to Q102's source as possible.
That's how I think it should be done.

Yes, you are right and I already mentioned that we want to achieve a better ground separation between IR2110 and mos-fet choppers.
This means high current return will mainly go to IR2110 COM pin 2.
Will reflect this in schematic as well.

Regards,
Tibi

[tvicol]

Did anyone know a source for litzwire, preferably in europe ?

Thanks and regards,
Tibi

[stoc005]

Let me know price/delivery and how to pay. Paypal OK?? Shipping to USA. Slow/cheap by mail in an envelop is OK.

[tvicol]

Originally Posted by stoc005

Let me know price/delivery and how to pay. Paypal OK?? Shipping to USA. Slow/cheap by mail in an envelop is OK.

Price around 7euro/board.
Boards will be available for shipping by the end of september.
Payment via paypal or bank transfer.

regards,
Tibi

[pjp]

Originally Posted by cnx

i just count about 20 mistakes, without having the board or gerbers. just from the pictures. or maybe they were there by purpose ?

Cnx, I don't think you can make such a strong allegation without providing proof.

Please list out the 20 mistakes you found, or stop making unsubstantiated derogatory remarks about others work.