TPS548D22EVM-784: outer diameter of thermal via

K.Yaita

Part Number: TPS548D22EVM-784
Other Parts Discussed in Thread: TPS548D22

Hi Team,

The datasheet shows "outer diameter of 20 mil" as the following.

I believe it is typo because it is too difficult to put 35 thermal vias for TPS548D22.
Could you look into it?

Best Regards,
Yaita

over 5 years ago

0 K.Yaita over 5 years ago

Guru 29720 points

The datasheet page 43 shows 0.2mm.
Is 0.2mm correct?

Best Regards,
Yaita

0 Peter James Miller over 5 years ago in reply to K.Yaita

TI__Guru 56985 points

K.Yaita

The 0.2mm (approximately 8mil) in the Land Pattern Example is the platted hole "inner diameter" of the vias.

The Layout guide line is talking about the outer diameter of the annular ring around the via. A 5 x 7 array of vias spaced 20mil (0.5mm) center to center will fill a 3mm x 4mm area within the thermal pad.

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TPS548D22EVM-784: outer diameter of thermal via