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TPS55330 Recommended SEPIC Application Schematic

Other Parts Discussed in Thread: TPS55330, TPS55340

Hello,

I'm looking to create a 5.2V, 2A output SEPIC powersupply using the TPS55330, powering off 1 or 2 cell lipo batteries, or off 4 Lithium AA batteries. WebBench doesnt seem to be able to generate a SEPIC schematic, and the datasheet does not have a recommended circuit for one. The datasheet simply mentions "When configured as SEPIC or flyback converter, a different design approach is required."

Is there any particular preference for switching frequency, inductor/capacitor or diode selection for this IC as a SEPIC? Can I just use a general SEPIC design and part selection?

Or alternatively, does anyone have a known working SEPIC schematic for this IC?

- Mark