I am designing DC-DC boost converter and I found out that capacitors generate huge voltage spikes on output because of their inductances. Even so called "low ESL" capacitors (10-12 nH) are causing them. I tried adding 30 pH capacitor (not from library) and it fixed the problem. Problem now is to find such capacitor on the market. Such low ESL caps usually are too low of voltage (up to 50V) and finding them is quite hard. I looked at websites like mouser.com, but datasheets barely say "low ESL" or "extremely low ESL" without even saying how low it is.
Thus I started thinking - maybe there is a better way to design such converter? Maybe I've made some mistake I did not know about?