LM46002: inductor evaluate dissipation equation

Jericho Tsai

Part Number: LM46002

Hi Sir,

We customer have some question form datasheet page 42 equation 27, PD calculator why evaluate inductor dissipation used 1.1*Iout*DCR instead of Iout*Iout* DCR.

Thanks

over 6 years ago

0 Frank De Stasi over 6 years ago

TI__Guru 72525 points

You are correct, the equation should be 1.1*Iout^2*DCR.
The 1.1 helps to account for switching and ripple loss in the inductor.

0 Jericho Tsai over 6 years ago in reply to Frank De Stasi

Intellectual 380 points

Thanks your support.

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LM46002: inductor evaluate dissipation equation