TPS63070: May we have TEC power solution like TPS63070? (we need automotive rating)

Hi Sir 

My customer use try TPS63070 in their TEC application. performance seems ok for them. 

but they need automotive rating, may we have suggestion solution.(TPS63070 have no automotive rating).

customer also try TPS63020, but performance not good enough.

                                                                                  Bogey