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leoz
Joined: 11 Oct 2004
Posts: 1
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 09 Dec 2004 3:20 how to design the power system of a FPGA board? |
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The FPGA(XC3S1500) on the board needs 1.2v, 2.5v and 3.3v power supplies, and the config PROM needs 1.8v. The ARM7(LPC2106) on the board needs 3.3v and 1.8v supplies.
Can I use 6 mic29502 (a LDO regulator) chips to transform 5v power to satisfy all these 6 power demand? If I make a mistake, please help to supply a new scheme.
Thanks in advance!
Leoz
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dainis
Joined: 15 May 2001
Posts: 1453
Helped: 56
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| 09 Dec 2004 8:15 Re: how to design the power system of a FPGA board? |
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Power Management : TI Power Management Solutions for FPGAs
Texas Instruments offers easy to use power management solutions for powering the latest high performance FPGAs. Powering an FPGA can be challenging since the power consumption depends upon the clock frequency, toggle rates, routing, I/O power, and resources used. TI has developed useful tools to simplify the selection of the power management solution and address concerns such as in-rush current and voltage ramp rate requirements.
http://www-s.ti.com/sc/techlit/slpb008.pdf
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Black Jack
Joined: 02 Dec 2003
Posts: 217
Helped: 10
Location: UKRAINE
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| 09 Dec 2004 9:16 Re: how to design the power system of a FPGA board? |
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Also see latest Xilinx XCELL Journal
for Intersil solution and National
http://www.national.com/appinfo/power/xilinxfpga.html
for Power Management Design Guide for Xilinx FPGAs
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moda
Joined: 05 Dec 2004
Posts: 67
Helped: 4
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| 10 Dec 2004 16:43 Re: how to design the power system of a FPGA board? |
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Remember that FPGA current consumption is like burst mode, so use good low ESR cap.
I do have experience with TI for FPGA board so I agree with - dainis go to
TI power management solutions for FPGAs.
moda
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