Hi Guillermo,
Yes, this part is as preferred to use for new design. TPS40140 and TPS40180 are the best stackable controller and they are very popular parts in TI. We have a lot of DINs along with NexFET recently. I don't think they will be obsoleted…
Other Parts Discussed in Thread: TPS40090 , TPS40180 , TPS40140 , TPS40132 , TPS40131 , TPS40130 What is the relationship between the frequency applied to the EN/SYNC pin and the frequency generated at the PWM outputs?
The following controllers (External MOSFETs) use Current Mode Control
TPS40100 (Single with programmable current feedback gain)
TPS40180 (Stackable Single)
TPS40130/131/132 (2-phase Controllers w/ single control loop)
TPS40140 (Sackable Dual / 2-…
>1000A that is a lot of current! What is the input voltage and output voltage?
Maybe you could use a multiple multiphase dc/dc controllers,
http://focus.ti.com/docs/prod/folders/print/tps40180.html
or
http://focus.ti.com/docs/prod/folders/print/tps40090…