Hi,
I have designed a board with the MWCT1013 based on the WCT-15W1CFFPD reference design. When I try to charge a phone using my board the MWCT1013 successfully communicates with the Qi receiver but after a few seconds will stop charging and indicate that there is a fault with the LEDs. I cannot determine what fault is being triggered in the device. What could cause these issues? What are some debug steps that I should use to investigate this issue?
Some things that I have tried:
Powering the board externally from a clean supply: does not fix the issue
Disconnecting the Temperature monitoring resistor: does not fix the issue
Calibrating the ADC: Does not fix the issue
Reviewing my schematic vs the reference schematic: The big differences are the Half-bridge FETs and the current sense resistor. What are the Half-bridge FETs on the reference design?
The coil that I am using is the 595-WTSC-6R3K-A11-ND
Here is my schematic:
Thank you for your help!
Dear Michael,
we have a FreeMASTER Run-Time Debugging Tool and a debugging user guide. You can download the Tool from this link at a very bottom of the page. Please find the debugging user guide attached.
I have applied for the WCT-15W1CFFPD hardware design files. As soon as I will receive them I will let you know what Half-bridge FETs and transmission coil is used in reference design.
With Best Regards,
Jozef
Hi Jozef,
I have followed the debug guide and have not found the issue. Are there any variables I can read in the code to see what fault is triggered?
Have you found the part numbers for the devices?
Regards,
Michael W.
Dear Michael,
could you please provide the following details about your project?
Customer (Company): ?
End Customer: ?
End Application: ?
Timeline: ?
Country: USA
Annual Volume: ?
With Best Regards,
Jozef
Hi Jozef,
This is a hobby project that I hope to turn into a product. The end Application is a personal electronic device. So no company and no annual volume currently.
Regards,
Michael W.
Hi Michael,
please find a Transmitter Library User’s Guide attached, where errors are also described. I am still waiting for the design files. The representatives asked for the details I shared with you. I am not sure if they are allowed to share the design files for a hobby project. I have sent them your answer and I am waiting for their reply.
With Best Regards,
Jozef
Hi Michael,
unfortunately the representatives have not provided the design files. I apologize for inconvenience. Please see below for their answer.
DESCRIPTION
Thanks for details, unfortunately we are not supporting hobby projects.
General basic info is on the nxp.com/wirelesspower
Please reach out to me for latest marketing material for specific requests.
With Best Regards,
Jozef