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WEBENCH® Tools/TPS54360: inverting buck-boost

user4681972
Prodigy 90 points
Part Number: TPS54360

Tool/software: WEBENCH® Design Tools

Hello

The TPS54360 is used to generate+/-15V power supply.

First I created the +15V supplier with webench and the -15V shall be simply a buck converter with the inductor and catch diode switched places.

But there is no output when simulation with webench. I attached the circuit and output waveform.

Thanks

Chenyi Jiang

  • 0
    TI__Guru**** 191445 points
    Did you just modify the +31 V to +15 V circuit using the Webench simulation circuit editor? I doubt that Webench supports any inverting buck boost topologies. So far as I know, internally the GND pin is hard referenced to GND and cannot be floated or assigned to minus Vout. I will move this to the Webench forum. They can verify this, but I am 99% certain about it.