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TPS61175: Cascaded boost converter topology

Part Number: TPS61175
Other Parts Discussed in Thread: LM5122

Hi Team,

I have some ideas to make a cascaded boost converter like below.

Spec may be

1. 12V to 48V(EV) ; 2. 80V to 380V(grid-connected)

I know we have corresponding boost converter could meet the spec, but I think cascaded topology may have some advantage like small filter size.

Could you suggest me the appropriate solution to achieve boost converter in business and technical side(cost/size)? (may boost converter or boost controller)

One more question could I use the one converter or one controller to achieve cascaded topology if both duty cycle of switch is same?  

Roy