The PD protocol is USB-PD (full name \"USB Power Delivery\") fast charge protocol. It is a fast charging specification developed by the USB-IF organization and is one of the mainstream fast charging protocols at present.
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The USB-PD fast charging protocol is output by Type-C interface, but it cannot be said that the Type-C interface must support the USB-PD protocol fast charging, and the two of them are interface form and protocol, which are unrelated.
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The advantage of the USB-PD protocol is to increase power delivery through USB cables and connectors, extending the cable bus power supply capability in USB applications. The specification enables higher voltages and currents, delivers up to 100 watts of power, and can freely change the direction of power delivery. Apple is a champion of the agreement.
Apple has no fast charge, Apple fast charge protocol called PD fast charge protocol, which has PD, Qi and other charging protocols, and iPhone14 supports Qi wireless charging protocol, power up to 7.5 watts.
Apple does not have a super 100W fast charge speed in the Android camp, or even more than 60W fast charge, the current iPhone14 series mobile phone official nominal charging speed is still around 20W, even if the use of a larger power charger, the speed is also around 30W, not very fast.
Apple's fast charge protocol is USB PD fast charge protocol, charging 30 minutes full 50%, PD intelligent regulation in nearly 80% full, into the trickle charge, does not harm the battery.