With the iphone12 series launch, 20W PD 3.0 charger have been the hot-selling charger. PD 3.0 charger integrates the advantages of fast charging protocol, with both high voltage and big current modes. Even though there are various fast charging protocols in the market, more and more devices support PD Protocol, PD 3.0 charger is becoming the mainstream trend with its superior performance and wide compatibility.
Multiple protection. With built-in smart chip, BWOO 20W PD 3.0 charger can automatic power mode matching recognition. Intelligent power-off, over-heating protection, over-load protection, over current protection, etc.
Speed up charging over 3 times, greatly saving your time. iphone 8 and the later iphone series with fast charging function, PD 3.0 charger upgrades the charging efficiency up to 3 times compared to the traditional 5V/1A charger.
There are a lot of fast charging Protocols of smartphone IC chip in the market, the most common ones includes PD, QC, PEP, Huawei FCP, Oppo VOOC,etc. So how is the difference of these charging Protocols? How does fast charging implemented on earth?
There are two main solutions to realize fast charging: one is high voltage/low current fast charging, another is low voltage/large current fast charging.
The first solution, is high voltage/low current fast charging, common ones are Qualcomm Quick Charge, PEP, Huawei FCP, etc. Which is to increase the charging voltage in the process of charging, in order to improve the charging power. In ordinary mobile phone charging, the voltage of 220V is reduced to 5V through the mobile phone charger, and then the internal circuit of the phone drops the voltage of 5V to 4.2V and then transfers the power to the battery. However the high voltage/low current quick charge is to increase the output voltage of the 5V mobile phone charger to 7-20V, and then reduces the voltage to 4.2V inside the mobile phone.
The second fast charging solution is low voltage/large current,which is to shunt it with parallel circuit under a certain voltage (4.5V-5V). At constant voltage, the less pressure each circuit shares after shunting in parallel. Similarly in the mobile phone, each circuit will undertake less pressure. It can avoid the high thermal power caused by the "high pressure to low pressure" conversion inside mobile phone. The common quick charging protocols with this solution are Oppo's VOOC and Huawei's Super Charge.
However, PD 3.0 protocol assimilates the advantages of current quick charging protocol in the market and reintegrates them into a more comprehensive quick charging solution. At the same time, PD 3.0 charger covers high voltage/low current and low voltage/large current. Its voltage output range is regulated: 3.0V~21V. In addition, the voltage amplitude modulation step is 20mV, and the overall idea integrates the high voltage/low current of Qualcomm QC Quick Charge (the same step amplitude modulation voltage ensures the charging efficiency) and the low voltage/high current of VOOC Flash charge.
With more and more mobile devices support PD Protocol, PD 3.0 charger is becoming the mainstream trend with its superior performance and wide compatibility.
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