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TPS40090 - Boost converter - design equations needed

Other Parts Discussed in Thread: TPS40090-Q1

Hi,

We are planning to use TPS40090-Q1 as boost converter for an automotive - audio application.

The circuit will be similar to PMP4538 rev-c schematic except, ours would be a dual phase design. Vin= battery (11-18V), Vo = 35V @ 30A.

Could you help me with the design equations for PMP4538 ckt.

A complete design document would be very helpful. Datasheet equations are for low voltage buck applications, i guess.

I'm looking specifically for current sense circurity (R6, R32, R34, D7, C24, C25,C10, R24, R29)snap shot shown below.