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LM5146-Q1-EVM12V: Input capacitor value

Part Number: LM5146-Q1-EVM12V


Tool/software:

Hello team,

This EVM has over 60uF of input capacitance as shown from the schematic below.
Do we really need this large value of input capacitace? Is this value coming from loop stability?

What would be the effect, if we just use 10uF to 20uF of ceramic caps instead?
(Customer don't have much board space to place these large caps)

Best Regards,
Kei Kuwahara