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GUI for tuning coil connected to STWLC38

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BPolinske
Associate II

‎2025-09-29 8:16 AM

There are already a few posts which show there is an issue with getting the STSW-WPSTUDIO GUI downloaded. I replied to one, but I have yet to receive a response. I am looking to select capacitors to tune an RX coil connected to a STWLC38JR controller. It appears we need the GUI to accomplish this..?? Thanks in advance.

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Didier HERROUIN
ST Employee

‎2025-10-16 7:50 AM

Dera BPolinske,

The GUI is not needed to select the capacitors in series with the coil.
You should target a resonant frequency F=1/(2*P*√LC) = 90kHz based on your coil inductance (L).

For reference, in our STWLC38 eval kit, the coil is 8µH and the total capacitors are 400nF (4*100nF).

Best regards,

Didier


In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.

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Didier HERROUIN
ST Employee

‎2025-10-16 7:50 AM

Dera BPolinske,

The GUI is not needed to select the capacitors in series with the coil.
You should target a resonant frequency F=1/(2*P*√LC) = 90kHz based on your coil inductance (L).

For reference, in our STWLC38 eval kit, the coil is 8µH and the total capacitors are 400nF (4*100nF).

Best regards,

Didier


In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
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