I want to smooth out rectifier voltage for a 10v in 5v out regulator. The problem is the idle current is 3 amps and I can't find a capacitor that can handle the ripple current at the required capacitances that are capable of smoothing. Any ideas?

 

I want to smooth out rectifier voltage for a 10v in 5v out regulator. The problem is the idle current is 3 amps and I can't find a capacitor that can handle the ripple current at the required capacitances that are capable of smoothing. Any ideas?

Several smaller caps in parallel.