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Principle Of Cell Phone USB Charging Cable Nov 24, 2016

Is converting the 220V AC charger 5V direct provide a sufficient output for powermanagement module in the mobile phone, controlled by the module stops after battery charge to 4.2V. USB charging directly remove the USB provides 5V voltageprovided to the mobile power management module, eliminating the power circuitof the charger.

USB charge detection through increased hardware detection in the D+,D-circuit, charging charger insert signal detection is accomplished by the purpose identified.