This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Part Number: BQ50002A
We have implemented a custom charge transmitter PCB using the BQ50002EVM-607 reference schematic and design files. We also have a custom PCB receiver implementation of the BQ51003BY based on: www.ti.com/lit/pdf/tidraa3
Happy to share Schematic and / or Altium files if this would help. Our transmitter is using the 'A' versions - BQ50002A / BQ500511A.
Our receiver is using this coil: Wurth 760308103202 (12 uH). The charge transmitter is using the same coil as the reference design: Wurth 760308111 (6.3 uH).
Our receiver is working perfectly when used with the BQ50002EVM dev kit transmitter (beep after ~500ms, green LED flashes, and transmitter draws ~300mA from 5V supply). Also the BQ50002EVM dev kit receiver is working with our custom charge transmitter. We have around 3mm to 5mm separation between the coils.
However, when we try to charge our custom receiver on our custom transmitter, we observe the following:
Occasionally the red LED starts to flash, and charging stops completely. After a while it sometimes restarts the procedure above.
We have already tweaked and tuned the ILIM and FOD thresholds (also resonant capacitors), but it did not seem to make any difference.
Any guidance for troubleshooting would be very greatly appreciated.
Bill Johns, Applications Engineer
Texas Instruments Inc
Please click "This resolved my issue" button if this post answers your question.
For more information on Battery Charger Solutions see Link
Tip -- Improve search results by including "FAQ"
We are glad that we were able to resolve this issue, and will now proceed to close this thread.
If you have further questions related to this thread, you may click "Ask a related question" below. The newly created question will be automatically linked to this question.
In reply to Bill Johns:
Thank you kindly, we appreciate the help.
In reply to Lourens Geldenhuys:
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.