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Altera_Forum
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13 years ago

Power Delivery Network (PDN) Tool

Hi everybody, i know that PDN is just a base line guide for selecting decoupling caps. Until now i just used 100n 0402 caps on each power (VCCINT, VCCIO, VCC PLL and VCC GXB ) pin of the device...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Here's a screen capture attached, looking from the bottom of a Cyclone IV board.

Red = top layer, yellow = top silk

Blue = bottom layer, sludge = bottom silk

I wasn't pin constrained but don't think I lost many user IO, I would share an odd via for decouplers or pull ups.

Nial