LMZ31530: Is it possible to connect in parallelly two components of LMZ31530 that programed to same voltage?

Arie Livshin

Part Number: LMZ31530
Other Parts Discussed in Thread: TPSM846C24, TPS546D24A

I need to support design where two DC/DC LMZ31530 1.8V@30A are connected to each other ,I didn't find such connection in data sheet or application note, is such configuration can work?

BR,

Arie Livshin

over 1 year ago

0 Britton Jones over 1 year ago

TI__Expert 8476 points

Hi Arie,

LMZ31530 is not intended for a stacked design (2 devices in parallel on the same rail). It does not have the required features for phase shift, voltage sharing, or current sharing to support this. We do have a similar module that supports these features and allows for up to 70A via a stacked design with 2 devices in parallel - the TPSM846C24. Here is a link to the product page for more information, TPSM846C24 data sheet, product information and support | TI.com.

Best regards,

Britton

0 Arie Livshin over 1 year ago in reply to Britton Jones

Prodigy 10 points

Hi Britton,

My situation is more complicate ,i have 3 boards ,each board has it's own DC/DC , that drives 1.8V 30A .

Some loads getting the power from one board and some getting from two boards and shorting the 1.8V lines on them .

So by this way we are actually have 3 DC/DC that connected in parallel , do you have solution for such problem ?

BR,

Arie

0 Tahar Allag over 1 year ago in reply to Arie Livshin

TI__Mastermind 32350 points

Hello Arie,

TPS546D24A is a Up to 4× Stackable converter.

Is that going to meet your requirement?

Thanks

Tahar

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LMZ31530: Is it possible to connect in parallelly two components of LMZ31530 that programed to same voltage?