What is a USB PD charger?
The USB-PD charger is a charger that supports the USB Power Delivery (USB PD) standard. It was approved by the USB Implementers Forum (USB-IF) on July 5, 2012. The released USB charging standards and technology simply allow USB to quickly power supply and charge through the protocol on the chip. Compared with traditional USB charging technology, it can provide higher power output and faster charging speed. The efficient and convenient charging mode will improve life and work efficiency.
What are the features and advantages of USB PD charger?
The new generation of USB PD chargers perfectly integrates Quick Charge to meet fast charging needs. In addition to supporting a variety of different output voltages and currents, it can also support 3C devices such as mobile phones, cameras, laptops, etc., which also expands the use scope of PD chargers. increasingly widespread. The following are the three major features of the USB PD charger, and these features derive its advantages:
1. Suitable for output of various powers:
It can be mainly divided into five power specifications: 10W, 18W, 36W, 60W and 100W. The voltage specifications are 5V, 9V, 15V and 20V. It can provide different power output according to the needs of the connected equipment, thereby achieving more efficient Charge. Currently, in order to unify specifications, USB-PD chargers all use Type-C connectors. In addition to unifying connector specifications, they can also support more devices.
2. Intelligent power management function:
The power output can be adjusted according to the needs of different devices, improving charging efficiency and extending battery life.
3. Support multiple power modes:
It can support power modes including PPS, APDO, QC and other power modes, and is compatible with the fast charging needs of various devices.
What are the differences between PD/QC/PPS chargers?
When it comes to USB-PD chargers, we have to mention another specification, QC (Quick Charge) fast charging. QC fast charging is a technology owned by Qualcomm (Qualcomm), because currently about 30% of smartphones use Qualcomm Snapdragon series chips. QC fast charging has high visibility, but the devices that this technology can support are limited. In addition to supporting mobile phones equipped with Qualcomm Snapdragon chips, QC fast charging can only be used on some Samsung mobile phones.
In addition to QC, some chargers on the market will also advertise that they support PPS. PPS (full name: Programmable Power Supply) refers to "dynamic voltage". Simply put, through PPS, the device and charger can be changed at any time through the PD protocol. Voltage output allows mobile phones and other devices to adjust voltage more effectively and improve charging efficiency.
Compared with the first two, the PD charger is highly compatible. It can be used not only on mobile phones, but also on laptops, tablets, TVs, etc., and USB-PD also unifies the cable as Type-C, so Most 3C products can use this charger. For example, Type-C has replaced the 3.5mm headphone jack, traditional USB jack, HDMI, DVI, etc. The popularity and convenience are self-evident.
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