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Altera_Forum's avatar
Altera_Forum
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18 years ago

DDR power supplies

So I'm designing a board based off the Cyclone III Starter Board and in there, there's a large, fancy DC-DC used for the DDR power. Is this necessary? Can I power my DDR using a normal LDO for 2.5v and a voltage reference at 1.25?

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    18 years ago

    Use the datasheet for the DDR2 component you are going to place on the board to get an estimate of how much power you are going to consume. Then you can figure out what you need. Don't cut corners on the reference voltage, it needs to be solid.

    Jake