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PWM controller underneath shielded power inductor.

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treez

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Hello,
Is it ok if my LT3791-1 pwm controller is sat right underneath the power inductor of the boost converter? Its 650W, and vin = 18V , vout = 34V.
..ie the inductor is on the top side of the PCB, and the controller is on the bottom side, right beneath the power inductor.
The inductor is in a PQ40/40 ferrite core set.

PQ series ferrite core datasheet
https://www.tdk-ninebig.com.tw/E015.PDF
 

Not the best place for it, I would not do it.
 
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    T

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Most of the flux will be inside the ferrite, and I will put a layer of pcb copper underneath the inductor, to shield the controller from the magnetic field, so now is it ok?
 

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