What is QC and PD charging

What is QC Fast Charging? How is it different from PD fast charging? Before comparing the QC fast charging and PD fast charging technologies, it is necessary to understand

the principles of QC fast charging and PD fast charging before you know how these two fast charging technologies will be applied in products.

Fast charging, simply explained as fast charging, means a comparative concept of fast charging speed relative to the charging speed in a unit of time. For example, for the same

mobile device, within the maximum allowable load range, by using a high-power charger to increase its charging speed and save charging time, it originally took three hours to

charge electricity, but the result only took one hour, which is called "fast charging".

QC Fast Charge is a Quick Charge (QC) fast charging technology developed by Qualcomm. Since the current mobile platform share of smartphones is mainly dominated by Qual-

comm's Snapdragon mobile platform, the QC fast charging technology supported by this platform is also relatively highest. In the early days, QC fast charging was mainly used to

pull up the current, and then with the improvement of the version, the dynamic adjustment of the current and voltage was gradually increased. So far, QC Fast Charging has come

to version 4+, and the QC4+ version includes a composite board for the QC 4 and QC 3.0/2.0 agreements that follow the USB PD 3.0 PPS agreement.

PD fast charging is the abbreviation of USB-PD (USB Power Delivery), although USB-PD chargers are not the largest in terms of market share compared to Qualcomm QC fast char-

ging technology, but because PD fast charging can support various types of chargers, and iPhone/iPad has also begun to support this USB-PD charging technology, so the trend is

rising. USB-PD is a power transmission standard defined by the USB-IF Association, in addition to PD2.0/PD3.0, it also includes PD3.0 PPS fast charging function, so all chargers that

support USB-PD can start charging according to USB-PD specifications.
At present, the maximum charging power provided by PD charging is 100W (20V*5A), but the actual charging power depends on the CC pin and system communication of the Type-C

cable. The PD fast charging system is widely used, often used in mobile phones, laptops, tablets, medical equipment and electric tools and other systems, and even Qualcomm's QC4+

also refers to PD3.0 PPS, so the future development of PD fast charging technology is quite exciting.

Shrinton has 15W-65W PD series products and has obtained PD3.0 certification. Founded in 2008, Shrinton is one of the world's leading manufacturers of power supply  and has been

recognized by well-known customers around the world. Focusing on the development and manufacture of high-efficiency power supply products, we continue to develop innovative pro-

ducts while insisting that the products meet the requirements of high quality and safety standards.

Pls contact us for closer cooperation chance!