TPSM83102: DC DC Boost converter

John B

Part Number: TPSM83102

Tool/software:

I am looking for DC DC Boost converter.

The output we need 1 A on +5V and 1 A on -5 V.

The input voltage is 2.75 V but the current is up to 6 A can be drawn from the supply.

At the moment no preference for cost and size but should be possible to place and add in the PCB design.

1 month ago

0 Tao Zhang 1 month ago

TI__Mastermind 27530 points

Hi John,

I think you mean you need both +5V and -5V rail with one boost converter, right？ What is your input voltage range?

Regards

Tao

0 John B 1 month ago in reply to Tao Zhang

Intellectual 285 points

Yes that is correct. The output requirement is +5V and -5V rail with boost converter with 1 A current on each each rail. The input range vary between 2.5 V to 3.3 V. But we try to power up by 2.75 V as we already have this on the board.

0 John B 1 month ago in reply to John B

Intellectual 285 points

I have tried to use TI WEBENCH Power Designer but I think it can not take bi-polar voltage output. Kindly let me know how we can set output voltage +/- 5V with load current requirement 1 A on each voltage rail in the tool TI WEBENCH Power Designer.

+1 Tao Zhang 1 month ago in reply to John B

TI__Mastermind 27530 points

Hi John B,

I think you can take the application not below as ref for your design. To genarate both negative and positive rail by one boost converter.

https://www.ti.com/lit/an/slvafu0/slvafu0.pdf?ts=1733084563538&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fen-us%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526nr%253D5734%2526searchTerm%253Dpositive+and+negative+output+dc-dc+converter

Regards

Tao

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TPSM83102: DC DC Boost converter