TPS650250RHBR thermal design

kura

Genius 4680 points

Our customer consider to use TPS650250RHBR.

http://www.tij.co.jp/jp/lit/ds/symlink/tps650250.pdf (datasheet P6)

They have a question about how to thermal design.

Which theta JA value of this device customer should use.

RθJA Junction-to-ambient thermal resistance 31.8

RHB 35 K/W　　　（High K Board）

over 7 years ago

0 Michael Green over 7 years ago

TI__Genius 16870 points

I typically use the junction to board as the board will be your main path of thermal dissipation and the board temperature will be the dominate influence to the surrounding components.

For more information, videos, and apps notes on this subject please refer to this link: www.ti.com/thermal

0 kura over 7 years ago in reply to Michael Green

Genius 4680 points

I would like to know reason why datasheet has 2 RθJA Junction-to-ambient.
Each condition is different?

Which theta JA value of this device customer should use ?

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TPS650250RHBR thermal design