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Part Number: BQ51050B
I have developed a pcb for wireless charging of a LiPo battery using the bq51050b IC. My design is based on the reference design. When i put the coil on the charging pad and look at the RECT signal (as this is stated to be the best indicator of the circuit receiving something from the charger) it shows the following:
Im not sure what this means for the system and if it should be working like this or not. The led indicating if the circuit is charging also isn't lighting up. How do i proceed troubleshooting the system and finding out how to get it work?
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In reply to Norelis Medina:
Thank you for making me check the board for shorts again ;-) should have thought of that aswell, there was a short between pin 4 and 5 on the ic. i fixed the issue and now it is charging fine.
In reply to Tim Kleinloog:
I've copied the TIDA-00329 and used the rx coil 760308101219 from wurth. It seems that I have the same problem : rx ping, but no tx allowed (RECT has a similar behaviour).
I've checked the short circuits, but there is none. I have a first question : if EN2 is low, and AD is low too, will a wireless charge happen?
The second question : what should I check to have more precise details? I've set the charging current to 50mA with a 5k resistor, is it too much?
In reply to Cedric Decouen:
Bill Johns, Applications Engineer
Texas Instruments Inc
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