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Hello,
I'm looking for a some effective solution for powering our test cards to be tested under radiation.
Each test card features 5 different FPGAs (Xilinx, Altera, Microsemi) and each FPGA counts 4 ... 6 different power rails (1.0 ... 3.3V, max 3A). So we need about 80 DC-DC regulators to power all this staff at distance of 50m.
Thanks in advance,
Pavel
Hi Pavel, what are the exact specs you need here;
Even simple request : input 5 ... 48V, 1st output: 1.0V, 3A, 2nd output: 1.8V, 3A gives 0 result.
Vin = 5V or 48V?
If that means 5 to 48V input, it is somewhat unrealistic.
A design that has that wide input range is uncommon.
I input 5Vin, 1st output: 1.0V, 3A, 2nd output: 1.8V, 3A
If you need an input of 48V then you should convert 48V down to something lower first, like 5V.
You can also input your specifications into Webench.
Input requirements, then CREATE PROJECT.
Here is a shareable design I just created. 5V to 1V 3A and 1.8V 3A
https://webench.ti.com/wb5/OpenPublicSharedProject.jsp?id=BDD14ED63B06A40E&s=c
There are many ways to pull up and create designs on TI.COM.
Will this help?
Dear Ed,
Thank you for feedback.
Finally I've found a product that matches perfectly our needs: Power Solution for Xilinx® Kintex® UltraScale™,
The only question: was this board tested over long cables (in our test case the loads are located at 50m from power supplies)
Can we order several boards PMP9444 ?
Our FPGA test set includes:
Although power rails in these devices differ a little from Kintex Ultrascale, the rail voltage can be adjusted, isnt it ?
Sincerely,
Pavel
Hello Ed,
Hello Ed,
Thanks for feedback.
The opportunity for noise induced operational errors is high due to the long cables.
If your goal is to have it operating, running code, you may see errors.
If your goal is to simply have the system powered while you dose the radiation then you have more options.
Our goal is, for sure, have our design operating.
But the test staff will likely provide shielded cables, so impact of noise should be considerabely reduced.
Like that generic supply. (the attachment didn't make it)
You mean test case presented in attachment slides ?
Yes, in the 1st version they just readback FPGA configuration, but in 2nd version they plan to test transceivers, so some kind of design shuld bu run.
The PMP7804 reference design provides all the power supply rails necessary to power the Xilinx ® Kintex ® 7 series family of FPGAs.
Frankly speaking, I didn't understand why PMP7804 is better for our case ?
We need current monitoring ... and I didn't see this option on PMP7804, whereas PMP9444 provide PMBus interface.
Moreover buy multiple evaluation boards with one regulation per board will result in more than 100 eval. boards ... dificult to manage.
Sincerely,
Pavel