Power Delivery Network tool says I need very few capacitors.

Everything came right from the power estimator; I was also a little surprised at how low the core current was. I revisited my power calculation, and I changed the I/O load capacitance. It's not clear if the load capacitance column in the power estimator is TOTAL capacitance or capacitance-per-pin. I initially assumed that it was per pin. I changed it to total, which gave me 1300pF (130 pins), which caused the current to jump to about 900 mA. Still, changing that number had very little effect on number of capacitors. And, as I mentioned, I can just arbitrarily put high current values into the PDN tool and still get very few capacitors.

(Full disclosure: I cheated and lumped all my I/O into one module; that shouldn't make a difference).