TPS56637: Does it suit for negative outpur?

Hi Alex,

TPS56637 can get negative output. But for this application, the input voltage across the device is Vin to Vout. Thus, the input voltage range is Vin_min to Vin_max-Vout, where Vout is a positive value. 

So if you want to get -5Vout, the max Vin should be under 28V-5V=23V. Can't support 24V.

The attached link is for reference.

https://www.ti.com/lit/an/slva933/slva933.pdf

Thanks,

Lishuang