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TPS63070: TEC Driver output range

Part Number: TPS63070
Other Parts Discussed in Thread: PMP9796, TPS55288

Dear team, 

I would like to use TPS63070 as a TEC driver. but there are some issue. 

As PMP9796, The TEC voltage can be varied between -2.5 ~ 4V . but the customer want to design the TEC voltage -5 to 5V with VIn is 5V and max current is 0.6A

In order to satisfy this specification, we need a buck-boost with 5V input and can be varied up to 10V output. 

Is there a device that satisfies this? please let me know your opinion. 

Thank you.