wireless recharging of wildlife GPS GSM transmitters

AWJJ Jongh

Other Parts Discussed in Thread: TIDA-00318

Dear sir/madam,

For wireless recharging of wildlife GPS GSM transmitters (before re-using these), we would like to make use of your nice wireless power receiver solution reference design shown here:

http://www.ti.com/lsds/ti/power-management/wireless-power-receiver-solutions-tools-software.page which are the TIDA-00318 and the TIDA-00334.

We have however a question with regards to the choice of the inductive coils to be used on the transmitter and receiver side. We would like to know which inductances/types can be used with the presented reference designs on the transmitting and receiving side. Especially for the wireless receiver part we need a small rectangular coil to fit in the enclosure of our wildlife transmitter like the IWAS3827ECEB100J50 (see http://www.digikey.com/product-detail/en/IWAS3827ECEB100J50/541-1695-ND/3641244).

If more choices are possible, do these also effect the choice of different values of the capacitors and/or resistors on both boards?

I am looking forward to your answer.

Best wishes,

Addy de Jongh,

CTO SON LBS BV

over 9 years ago

0 Wenjia Liu over 9 years ago

TI__Expert 7730 points

The coil selection is really depending on your specific system (size, shape, power level, and etc.) However, with different coils, you will need to tune the Cs and Cd on your board. The below spread sheet can help you calculate the capacitor values according to the inductance and DCR of the coils you choose. www.ti.com/.../sluc566

Thanks,

Wenjia

0 AWJJ Jongh over 9 years ago in reply to Wenjia Liu

Prodigy 60 points

Thank you very much for your swift answer.

Best wishes,
Addy

0 AWJJ Jongh over 9 years ago in reply to Wenjia Liu

Prodigy 60 points

Please allow me one more question.

I see that in the BOM for the reference design of the wireless transmitter TIDA-00334, the Tx coil Wurth 760308101103 has been mentioned.

The question is which Rx inductive coils belong/fit to the given receiver reference designs TIDA-00318 (www.ti.com/.../TIDA-00318) and the tiny receiver TIDA-00329 (www.ti.com/.../tida-00329)?

Thanks in advance for your answer!

Best wishes,
Addy

0 Wenjia Liu over 9 years ago in reply to AWJJ Jongh

TI__Expert 7730 points

TIDA-00318 uses TDK WR222230 coil.

TIDA-00329 uses Wurth 760308101303, and it can also use the TDK coil WR222230-28M8-G.

The test data in the web folder contains those information.

Thanks,

Wenjia

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wireless recharging of wildlife GPS GSM transmitters