TPS55330: request for SEPIC mode Design Application Schematic

Emmanuel Lambert

Part Number: TPS55330

Hello!
I intend to use this as 12V output and the input is a battery that can reach 12.6V when full charged.
There is no reference for SEPIC or buck-boost circuit and WEBENCH don't work if VIN is near VOUT.
Where can I find reference?

Thanks

over 4 years ago

0 Jasper Li over 4 years ago

TI__Mastermind 46905 points

Hi Emmanuel,

you will need sepic topology for your application, and please use PSPICE for TI to do the simulation. Webench may not support SEPIC circuit.

0 Emmanuel Lambert over 4 years ago in reply to Jasper Li

Prodigy 20 points

Hello Jasper,
Thanks for your support.
I indeed need a sepic topology, however I am not very familiar with such topology and I would like to have a template or reference schematic for this TPS55330 IC. Is there any available?
I am surprised that there is no such info in the datasheet, instead there is just thjis line "When configured as SEPIC or flyback converter, a different design approach is required."

Have a good day,
Emmanuel

0 Jasper Li over 4 years ago in reply to Emmanuel Lambert

TI__Mastermind 46905 points

Hi Emmanuel,

there are many application notes about the sepic circuit design https://www.ti.com/lit/an/snva168e/snva168e.pdf ; https://www.ti.com/lit/an/slva337/slva337.pdf

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TPS55330: request for SEPIC mode Design Application Schematic