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Building a WPT system based on commerially available module

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bhl777

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Hi all, I want to buy a commercial available WPT module to fit in an application. The only requirement in my case is that the AC voltage at the secondary power coil can be rectified to a DC voltage >=5.5V, and this voltage can have the soucing capability up to 50mA.

I found one product here but did not know if I can modify it to fit in my application. Can someone help me about it? Because I am new to WPT and do not know much about the theory.
https://www.st.com/content/ccc/reso...df/jcr:content/translations/en.DM00326828.pdf
If you are aware of any other products I can buy online to fit in the application, please advise me as well.
Thank you!
 
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Review the STWLC03 datasheet an realize that the chip is supports 3 to 7 V output voltage. The evaluation kit dimensions the feedback network for 3.3 to 5 V programmable output, it should be adjusted for 5.5 or higher output.

If you don't mind that the charging system is a bit oversized for 0.3 W output power, it can be surely used.
 

FvM said:
Review the STWLC03 datasheet an realize that the chip is supports 3 to 7 V output voltage. The evaluation kit dimensions the feedback network for 3.3 to 5 V programmable output, it should be adjusted for 5.5 or higher output.

If you don't mind that the charging system is a bit oversized for 0.3 W output power, it can be surely used.
Click to expand...

Thank you FvM! Would you advise me the following questions?
(1) Is the output of the secondary coil already a DC? How should I adjust the level?
(2) Can we tell what is the operating frequency of the coil? Is it 13.56MHz?
(3) What do I need at the input? Should a DC power supply good enough?
 
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You mean the receiver coil? The voltage across an inductor can be never DC.

The receiver chip is designed to support different wireless charging standards in the 100 to 500 kHz range. Don't know the exact frequency range of the transmitter.
 
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