PD Charger is "power delivery charger"，Also known as USB C Charger
PD is a fast charging technology that was developed by the USB Implementers Forum. Because it’s an official part of USB technology, it can be supported by any manufacturer. No manufacturer has to pay extra licensing fees to incorporate PD technology into their product. All they need to do is built the circuitry and the battery to the PD specifications. Therefore, USB C Charger, especially the high-power PD Charger developed rapidly.
PD technology is capable of USB C wall charger delivering up to 100 watts of power such as GaN PD Charger, far more than any smartphone requires. However, this high wattage has some significant advantages. For example,fast wall charger which used PD technology can be used to power laptops. Apple’s new MacBooks all use it, and can even be used while they’recharging. This means you’re getting much better performance than you’d expect from a tandard USB cable.
In addition to 100 watts power, there are five other wattage levels USB C charger: 7.5, 15,20, 45,60 watts are all supported. Within each wattage level, there’s also support for various voltages. Just to use one example, in the 20-watt range(as the figure is shown above- the 2 ports USB C charger and usb A wall charger), you can charge at 5, 9, or 15 volts on the pd charger port. This makes the PD standard exceptionally versatile. Manufacturers
can build a wide variety of devices and still get top-tier performance.
PD Charger is a specification for handling higher power and allows a range of devices to charge quickly over a USB connection. It operates by facilitating a conversation between two devices to negotiate a power contract so they can determine how much power can be pulled from the charger.
Power Delivery starts at the 5V setting and is configurable up to 20V. Using a standard USB C cable, it can handle up to 60W, and will go up to 100W using a designated EMCA cable.
Another point of interest regarding Power Delivery is that it allows for power to flow both ways, with no set direction based on circuit or connection. For example,if you were to connect two phones that support Power Delivery with a USB-C charging cable, one phone could charge the other and vice versa.
UNIVERSAL CHARGING SOLUTION
Imagine a world in which one cable was the be-all and end-all charging solution for all of your gadgets. No more scrambling to cram multiple cords into packs and bags, or struggling to figure out which connector matches with which device. It’s never easy to know exactly what the future of charging will look like, but this could become a reality sooner rather than later. USB-C and Power Delivery are already on track to provide a universal charging solution for everything from phones to laptops thanks to broad industry adoption of the standard which takes the guesswork out of cable and charger compatibility.