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Altera_Forum
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12 years ago

Cyclone V Core overpower effects

Hi, I plan to use a Cyclone V FPGA in combination with a LPDDR2 RAM from Micron. The Cyclone V FPGA needs 1.07V .. 1.13V for the core, and 1.14V .. 1.26V for the 1.2V-IO-Pins. The Micron...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

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Hi,

(a) What effects do I have to consider if I power the FPGA core with 1.2V instead of 1.1V to save one voltage regulator? (BTW: 1.2V is far away from the absolute maximum rating of 1.43V...)

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Could you use a diode or two to get the FPGA core IO down nearer to 1.1V?

You'd need to work out the power rating for your anticipated I_core but it might be cheaper than a regulator.

Nial