Do you often see the word "PD" when picking out chargers or electronic devices but don’t know what that means? In this article we will quickly explain what PD means and its advantages. 

USB PD stands for USB Power Delivery, a charging protocol released by USB-IF in 2012. USB PD 3.0 uses a Type-C interface, offering high power and wide voltage, making it capable of powering various devices.

• High Power: USB PD 3.0 can provide up to 100W of power output. Compared to the traditional USB Bus Powered standard, USB PD can meet the changing needs of high-power devices such as laptops.
• Wide Voltage: USB PD 3.0 supports an adjustable voltage range from 5V to 20V, allowing for more precise voltage control to meet the demands of different devices. This also improves charging efficiency and device safety.
• Convenient USB Type-C: USB PD 3.0 adopts the Type-C interface. USB Type-C connectors are reversible, meaning they can be plugged in either way up.

Before introducing the working method, let's review a basic electrical formula:

Charging base power supply options 

When two USB PD devices connect, the negotiations between them will happen to determine which device will supply power and which will receive power. During the process, the devices would also exchange information about their respective power capabilities and requirements, for instance, the maximum supported voltage and current intensity. 

USB PD 3.0 offers multiple combinations such as 5V, 9V, 15V, and 20V, with corresponding currents of 2.25A, 3A, and 5A.

Device requests power

The device then addresses its required power combination to the power supplier. For example, a phone might request a 9V*3A (27W) combination.

Charging base supplies power

Finally, the Type-C charger provides the appropriate power based on all the information.

• USB PD is a communication protocol for USB. 

• USB PD 3.0 specifically supports the USB Type-C interface.

• Compared to traditional USB standards, Type-C simplifies usage and expands application scenarios.

• Through USB PD Negotiations, the connected devices are provided with a safe charging practice.

Devices like the beCreatus DP1310, equipped with PD 3.0, support up to 100W fast charging, allowing your laptop to enjoy full performance while charging.