Pd vs Quick Charge 3.0 | Quick Charge 4.0 vs Usb PD | ZONSAN

2023-01-14 PD (Power Delivery) and Quick Charge 3.0 (QC 3.0) and Quick Charge 4.0 (QC 4.0) are both technologies used to speed up the charging process of devices.



PD is a charging standard developed by the USB Implementers Forum (USB-IF) that allows for faster charging of USB-C devices. It uses a negotiation process between the device and the charger to determine the optimal charging rate, and it can also be used to charge larger devices such as laptops. PD charging is also more efficient as it can adjust to the device's needs, for example, if the device is almost fully charged it will reduce the power and avoid overcharging.

Quick Charge 3.0 (QC 3.0) is a proprietary charging technology developed by Qualcomm. It is designed to quickly charge devices that use the USB-A connector. It uses a higher voltage and amperage to charge devices faster than a standard USB charger. This technology is widely used in smartphones, tablets and other mobile devices.

Quick Charge 4.0 uses a higher voltage and amperage to charge devices faster than a standard USB charger, it also improves the charging efficiency and safety. The main improvement over Quick Charge 3.0 is that it uses dual charge paths to charge both the battery and the phone's power management IC (Integrated Circuit) simultaneously, this allows for faster charging time, and it's said to be up to 15% faster than Quick Charge 3.0.

Additionally, Quick Charge 4.0 is also backwards compatible with Quick Charge 3.0, 2.0 and 1.0, meaning that devices that support Quick Charge 4.0 can also charge using the older versions of Quick Charge technology.

In terms of charging speed, Quick Charge 3.0 can charge devices faster than a standard USB charger and it's faster than its predecessor Quick Charge 2.0. However, PD can be considered more efficient as it's a universal charging standard and can be used with USB-C devices, it also adjusts the power delivery to the device's needs.

In summary, PD is a universal charging standard that can be used with USB-C devices, it's more efficient and future-proof, while Quick Charge 3.0 is a proprietary technology that is mainly used to quickly charge devices that use the USB-A connector.