Views: 65 Author: Site Editor Publish Time: 2023-04-06 Origin: Site
The charger protocol typically involves a negotiation process between the device and the charger, where the device sends a request for a certain charging voltage and current, and the charger responds with the available options. The device then selects the optimal charging parameters based on its battery capacity, charging speed requirements, and other factors.
In the fast charging protocol, when the protocol does not match, it will be backwards compatible with low-power charging. This is why when we use different fast chargers to charge our phones some of them charge very slowly.
Quick Charge (Qualcomm)
Quick Charge is a fast charging technology developed by Qualcomm for mobile devices. It uses a higher voltage to charge the battery faster, and it is compatible with devices that use Snapdragon processors.
Power Delivery (USB-PD)
Power Delivery is a fast charging technology developed by the USB Implementers Forum (USB-IF). It uses a higher wattage to charge the battery faster, and it is compatible with devices that use USB Type-C ports.
SuperVOOC (OPPO)
SuperVOOC is a fast charging technology developed by OPPO for their smartphones. It uses a higher voltage to charge the battery faster, and it is currently one of the fastest charging protocols available.
Adaptive Fast Charging (Samsung)
Adaptive Fast Charging is a fast charging technology developed by Samsung for their smartphones. It uses a higher voltage to charge the battery faster, and it is compatible with devices that use Qualcomm processors.
Dash Charge (OnePlus)
Dash Charge is a fast charging technology developed by OnePlus for their smartphones. It uses a higher voltage to charge the battery faster, and it is compatible with devices that use Qualcomm processors.
VOOC (OPPO)
VOOC is a fast charging technology developed by OPPO for their smartphones. It uses a higher current to charge the battery faster, and it is compatible with devices that use VOOC-enabled chargers.
USB PD (Apple)
USB-PD is a fast charging specification developed by USB-IF, which is one of the mainstream fast charging protocols at present. USB-PD fast charging protocol is output through Type-C interface.
These fast charging protocols vary in their charging speed, compatibility, and availability, but they all aim to reduce the time it takes to charge electronic devices.
A PD (Power Delivery) charger is a type of charger that uses the USB Type-C port to deliver higher power output than standard USB chargers. PD chargers use a special protocol to communicate with the device being charged and negotiate the appropriate voltage and current for charging.
This means that a single PD charger can be used to charge a variety of devices, from smartphones to laptops.
For example, PD chargers can deliver high power output to quickly charge the power bank, which can then be used to charge other devices on the go.
PD chargers are also used in charging other USB-C enabled devices such as cameras, gaming consoles, and even some electric vehicles.
When a PD charger is connected to a device that supports PD charging, the charger sends a negotiation request to the device to determine its power requirements. The device responds with its power requirements, and the charger adjusts its output voltage and current to match.
USB connections have been primarily used for data transfer between devices, but USB PD enables USB to also be used for charging devices such as smartphones, laptops, tablets, and other electronic devices. This is achieved by allowing for higher voltage and current to be delivered over the USB connection. In addition, USB PD allows for bidirectional power delivery, meaning that devices can both send and receive power over a single USB connection.
In 2021, USB Promoter Group Announces USB Power Delivery Specification Revision 3.1. USB PD breaks the 100-watt limit, this extends the applicability of USB PD to a large number of applications where 100W wasn’t adequate.
