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New round Transmitter Coils from Würth Elektronik

lfa555

Dear Wireless Power Challenge Participants,

 

effective immediately Würth Elektronik's has released for you our new brand new round shaped wireless charging coils for the QI A10 and A11 standard. I know you have requested such more space saving coils before. The stock is available at We and you can order the coils via samples from Christian DeFeo.

 

50mm diameter Transmitters:

WE-WPCC Wireless Power Charging Transmitter Coil - Product Catalog Passive Components

 

 

Those coils are right now exclusively available for you and within the next 2-3 weeks they will be also available at Farnell to buy.

 

Happy Designing and Crafting!

 

regards

Lars

Parents

  • Can we use these coils with the existing transmitter circuit or do we need to redesign?

  • in reply to ipv1

    I think as long as the inductance matches the one from the existing coil (6.3µH) you should be fine. Anything else might mean to replace the capacitors on the transmitter board to get a proper matching.

    My biggest concern would be how to remove the existing coil from the transmitter board without destroying it (to be able to use it again).

    I think I will try some of the new coils, just the provea another german saying: 'wer misst misst mist' image

    (and maybe I can get a bigger transmission range with them as well...)

  • in reply to hlipka

    Hendrik

    I seem to recall a TI datasheet which (from memory) suggested the distance is proportional to the size of the coil.

    ie the bigger the coil the greater the distance and still maintain acceptable coupling.

     

    I'll do some digging and see if I can find it.

     

    I don't mind you doing the testing ..image

     

     

    mark

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  • in reply to hlipka

    Hendrik

    I seem to recall a TI datasheet which (from memory) suggested the distance is proportional to the size of the coil.

    ie the bigger the coil the greater the distance and still maintain acceptable coupling.

     

    I'll do some digging and see if I can find it.

     

    I don't mind you doing the testing ..image

     

     

    mark

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