BQ500212AEVM coil exchange

Jihun Lee

Other Parts Discussed in Thread: BQ500212A

Hi I am kind of new to Qi powering.

I bought BQ500212AEVM and it has 6.3 uH coil (WE 760308111)

But I want to replace it with smaller coil with 6.5 uH (WE 760308101103)

Since TIDA-00334 used this coil with BQ500212A,

I think that this is possible.

The questions is

What are capacitors used to match resonance in Q500212AEVM? and

should I change matching capacitor in this case?

0 Bill Johns over 9 years ago

If the new coil inductance value is equivalent to old coil no retuning of the coil is needed.

EVM old coil value is 6.3uH.

0 Jihun Lee over 9 years ago in reply to Bill Johns

Thank you for your reply!

But I am going to replace 6.3uH coil with 6.5uH coil.

the difference is only 0.2uH.

should I retune?

For instance, tida-00334used this 6.5uH coil too.

Sincerely

0 Bill Johns over 9 years ago in reply to Jihun Lee

6.5uH would be OK---Coil tolerance for the 6.3uH is +/- 10%

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