Forum Discussion
Ian_Maw
New Contributor
New ContributorDoes the PDN Tool Take DC Bias Loss Into Account?
Hi, I worked in a company where someone did not account for loss of capacitance due to DC bias and the boards were unreliable for that reason. I used the Cyclone V PDN tool to calculate the require...
- Accepted. Let's say, PDN tool has no features to take account of capacitor voltage rating. Even if you know it, effective capacitance of different high Er capacitors at 0.5*Vrated ranges between 30 and 80 % of nominal capacitance.
FvM
Super Contributor
Super ContributorHi,
PDN tool doesn't even use capacitor rated voltage, how should it consider C/V characteristic? Obviously, it's up to the designer to put in effective capacitance.
Ian_MawThanks, although your attitude is less than pleasant.
- FvMAccepted. Let's say, PDN tool has no features to take account of capacitor voltage rating. Even if you know it, effective capacitance of different high Er capacitors at 0.5*Vrated ranges between 30 and 80 % of nominal capacitance.
