TPS62090 - the power dissipation

Hirotaka Matsumoto

Other Parts Discussed in Thread: TPS62090

Hi all

Would you mind if we ask TPS62090?

How do we calculate the power dissipation TPS62090?(As our recognition, is the following correct?)
-Pd = Vin x Iin x (1 − Efficiency) − 1.1 x Iout x DCR(Inductor DC parasitic resistance)

Kind regards,

Hirotaka Matsumoto

over 9 years ago

0 Chris Glaser over 9 years ago

TI__Guru**** 150950 points

Essentially, yes. You can look at the efficiency curves in the D/S and find the total losses at a certain operating point (output power). Then, subtract the inductor losses. These are primarily from the DCR but also from AC losses in the coil. The inductor vendor might have a estimation tool for these.

0 Hirotaka Matsumoto over 9 years ago in reply to Chris Glaser

Guru 27585 points

Chris san,

OK Thanks.

Kind regards,

Hirotaka Matsumoto

Power management

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TPS62090 - the power dissipation