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Common problem analysis
1. Why can't the power reach the maximum power of the
charger?
答：The PD protocol has a feature, if the current needs to exceed 3A.
First: The charger needs to support protocols exceeding 3A;
Second: The CC line connected to the charger needs to support a current
of more than 3A. This CC line usually has an e-marker chip;
Third: The mobile phone also needs to support the agreement.
So how do you know that the mobile phone has indeed triggered a PD protocol
exceeding 3A? You can use the PD monitoring function of the tester. If
the monitoring result is that a higher power is triggered but the actual
power is far from being reached, it is because the dual CC lines bring
higher line impedance, resulting in the mobile phone receiving voltage
lower than the ideal state Too much, the mobile phone gets less current.
2.No agreement can be detected using two cc lines
Answer: Because the CC lines on the market are single-sided CC (the signal
line used for communication is called CC), when two CC lines are used,
the signal line needs to be paired to communicate correctly. If it can't
be triggered, please try to flip one side.
Summary of Contents for FNB38
Page 1: ...1 FNB38 manual V1 2...
