I made a circuit that contains the part - battery management, which I adopted BQ24072T. But the problem is that, after I soldered some PCB, some worked well, but other didn't begin charge. After I connected the power supply, PGOOD LED lighted up, but the CHG LED didn't.
I configured the TS resistors according the details in datasheet: because I didn't use the Thermal Monitor function, I connected resistors of 200k and 49.9k.
When I used a oscilloscope to monitor the voltage on pin TS, the voltage was around 850mv.
And I can make sure that I soldered everything correctly.
Here is my schematic and part of PCB.
Thank your for reading!
Hope someone can help me figure out the problem.