3.3V, 2.5V and 1.2V power supply generation for Spartan 3

[gold_kiss]

Hi,
I need circuit for power supply generation for Spartan 3 board.

I need complete schematic drawings, if anyone can share would be of great help.
Also can anyone tell me wht values of By-pass capacitors and De-coupling caps do I need to use.
Thanks,
Gold_kiss

 

[IanP]

difference lm1117 lm117

Could you estimate power requirements for each voltage?
Maybe you just can go to sites such as, for example, Maxim-Power, select certain ICs, go through their data sheet (which in most cases include application notes) and ask them to send you samples..
Here is a link:
**broken link removed**
Try the switchmode-stepdown section.
Regards,
IanP

 

[dainis]

Re: 3.3V, 2.5V and 1.8V

https://focus.ti.com/analog/docs/ar...=templatedata/cm/brc/data/hpa_ppm_xilinx_fpga

 

[revolt]

3.3V, 2.5V and 1.8V

Take a look at the schematics from the Spartan 3 Starter Kit from Xilinx:
https://www.xilinx.com/products/spartan3/boards/s3_board_sch.pdf

 

[power-twq]

Re: 3.3V, 2.5V and 1.8V

you can use LM1117-3.3 LM1117-2.5

LM1117-1.8 CHIPS.

Hi,
I need circuit for power supply generation for Spartan 3 board.

I need complete schematic drawings, if anyone can share would be of great help.
Also can anyone tell me wht values of By-pass capacitors and De-coupling caps do I need to use.
Thanks,
Gold_kiss

 

[gold_kiss]

Re: 3.3V, 2.5V and 1.2V

Hi All,
Please give me details of voltage regulator or LDO for generating 1.2V.

Thanks,
Gold_kiss

 

[karlheinz]

Re: 3.3V, 2.5V and 1.2V

Look here: www.national.com/see/xilinxfpga

 

[gnomix]

Re: 3.3V, 2.5V and 1.2V

Hi All,
Please give me details of voltage regulator or LDO for generating 1.2V.

Thanks,
Gold_kiss

If you like a plug-and-play solution see:
**broken link removed**
only one resistor to generate any value from 0.76 to 3.6 v starting from 3v to 5V input

 

[elsalvador]

Re: 3.3V, 2.5V and 1.2V

Texas Instruments Power Management Reference Guide for Xilinx® FPGAs and CPLDs

**broken link removed**

Highly-integrated, Triple Supply from TI Powers Spartan™-3 Core, I/O and VCCAUX Rails

**broken link removed**

 

[Sandeep Karkera]

Re: 3.3V, 2.5V and 1.2V

You can also look at ISL6521 at www.intersil.com

also there is one more from TI, TPS 75003


Regards
Sandeep Karkera

 

[Johnson]

Re: 3.3V, 2.5V and 1.2V

What is difference between LM117 and LM1117?

 

[preet]

Re: 3.3V, 2.5V and 1.2V

visit **broken link removed**
for lm117 and lm1117 diff