Two times is not enough - Measuring the performance of the wireless power demo kit part 3

RE: Two times is not enough - Measuring the performance of the wireless power demo kit part 3

sleuz — Wed, 14 May 2014 08:27:20 GMT

Hi guys

We are using A11-coils for our transmitter. If you change the receiver coil to a different inductance you have to align the resonant oscillating circuit. This also means to change the capacitor values.

For additional help feel free to contact us here (wirelesspower@we-online.com) and we are more than happy to support you with calculating the resonant oscillating circuit.

Regards

Simon

RE: Two times is not enough - Measuring the performance of the wireless power demo kit part 3

ForcisConnect — Fri, 09 May 2014 09:31:35 GMT

Very nice post!

It really did not occur to me to test the EVM with different coils, maybe because both the data sheet and the TI support forum insisted that much on capacitor tuning. Looking at your results it really looks like it's not that important. If so, a lot of experimenting may be possible. Arg, so many things to do and so less time!

RE: Two times is not enough - Measuring the performance of the wireless power demo kit part 3

mcb1 — Thu, 08 May 2014 08:27:21 GMT

Hendrik

Nice comparison, and very interesting figures.

There was a comment made (in the Wurth Forum I think ) about changing the capacitors to make the coil resonant at the right frequency.

The 3830 has a much higher inductance (16.7 v 10.5uH) than the original.

Can Simon or someone from Wurth/TI comment if these need changing to optimise and improve the performance.

[mention:ed20c3b7bffd4f2886c07f44558186a6:e9ed411860ed4f2ba0265705b8793d05]

Mark

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Hendrik

Nizza Vergleich und sehr interessante Zahlen.
Es war ein Kommentar gemacht (in der Wurth Forum glaube ich) über das Ändern der Kondensatoren die Spule an der richtigen Resonanzfrequenz zu machen.
Der 3830 besitzt eine viel höhere Induktivität (16,7 10.5uH v) als das Original.
Kann Simon oder jemand aus Wurth / TI Kommentar, wenn diese Notwendigkeit Wechsel zu optimieren und die Leistung.
[mention:ed20c3b7bffd4f2886c07f44558186a6:e9ed411860ed4f2ba0265705b8793d05]

Marke