smps parallel connection

Hello. i design L6566BH on design süite. But i see that max power out is 350w. if i do same smps 3 pieces and i want to get 1050w can i connect their outputs in parallel connection? because i see that it is not basic thing. one smps gives 10A the other give 2A  for this i want they share current value equal. for example i need 30A. and i want 10a/smps give power

is there a way or is there a calculator half or full bridge?

thanks