TPS54202 as Inverting Buck Boost?

Can TPS54202 be used as a inverting buck-boost converter?

Hi,

TPS54202 can support 12Vin -9Vout 600mA application. But The device is a sync-buck convertor, we didn't use it as buck-boost. Typically,
the non-sync buck converter can be configured to BUCK-BOOST ..

Abull

Hi, Abull
There is a buck-boost power supply case of synchronous rectification of TPS54620 and TPS62130, but if it's tps54202, do any problems form?

Best Regards,

Hi Hirotsugu-san,

For the Sync-Bulk converter, Low side FET is integrated to the IC. My concern is the voltage  when the devices works in the BUCK-Boost mode.  Do you have the schematic of TPS54620 and TPS62130 and share to me in E-mail? I will run a simulation to double confirm it.

Abull

Hi, Abull
Please check follwing Application Note.

Create an Inverting Power Supply Using a Synchronous Step-Down Regulator (Rev. A) (slva458a.pdf)
www.ti.com/.../slva458a

Using the TPS6215x in an Inverting Buck-Boost Topology.. (Rev. C) (slva469c.pdf)
www.ti.com/.../slva469c

Best Regards,

Hi all,
I've noticed this post for days, so can I use TPS54202 as an Inverting Buck Boost topology?
If so, what should I concern to make sure the design is stability?
Thanks a lot !

Best Regards,