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Home / News / Differences Between Fast Charging Technologies: Power Delivery (PD) vs. Quick Charge (QC)

Differences Between Fast Charging Technologies: Power Delivery (PD) vs. Quick Charge (QC)

Views: 25     Author: Site Editor     Publish Time: 2023-05-11      Origin: Site

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A lot of individuals have some familiarity with Power Delivery (PD) and Qualcomm Quick Charge (QC), but what distinguishes them from each other, and what makes fast-charging technologies significant? In this article, we will provide a comprehensive overview of Power Delivery technologies and Qualcomm Quick Charge, highlighting their dissimilarities and discussing how they are continuously advancing and improving.


In this age of smartphones and other devices that keep us constantly connected, staying powered up has become an absolute necessity. As we seek to remain connected with the world around us, we are always on the lookout for the best and fastest ways to charge our devices. This is where fast-charging technologies come into play.

While many people are familiar with Qualcomm Quick Charge (QC) and Power Delivery (PD), what distinguishes these technologies from each other, and why are they so crucial? In this article, we will delve into everything you need to know about Qualcomm Quick Charge and Power Delivery technologies, including their differences, and how they are continuously advancing and improving.


What is Fast Charging Technology?


Fast charging technology refers to the technology that enables electronic devices such as smartphones, laptops, and tablets to charge faster than conventional charging methods. It works by increasing the amount of power delivered to the device, allowing it to charge at a much quicker rate. This technology has become increasingly popular due to the high usage of electronic devices, and the need for quick and efficient charging. Different fast charging technologies are available in the market, such as Power Delivery, Qualcomm Quick Charge, Super VOOC, and Dash Charge, each with their own specific features and benefits.


How Does Fast Charging Work?

Fast charging technologies operate by making two manufacturing adjustments: increasing the amperage of a charge or adjusting its voltage to boost potential energy. Typically, fast charging technology concentrates on adjusting the voltage to increase the potential energy of a device rather than increasing the amperage.

Power is supplied to the device in three stages, and the amount of power distributed and charging time largely depends on the fast-charging standard, which corresponds to a specific device, charger, and power output. The three charging stages are:

  1. Constant current stage: In this stage, the voltage rises towards its maximum while the current remains constant. A substantial amount of power is delivered to the device at this stage.

  2. Saturation stage: At this stage, the voltage reaches its maximum, and the current begins to decrease.

  3. Trickle/Topping stage: The battery is fully charged at this stage. Power either slowly trickles into the device or periodically charges a low "topping" amount while the device consumes battery power.


There are several devices that can charge quickly, including 100W PD Charger

and 35W GaN A+C PD charger. Fast charging technology is commonly available in the following forms,fast-charging power banks,fast-charging power strips and fast-charging car chargers.


What is PD Charging?

USB Power Delivery (PD) is a quick charging standard found in certain iOS and Android devices. This technology allows for higher power delivery compared to typical charging methods. USB-C Power Delivery technology can provide up to 100 watts of power to a device, which is useful for larger devices but may be too much for smaller devices.

The USB-IF Association created PD technology, which utilizes the latest USB-C interface. Devices that use PD fast charging must be charged using a USB-C port and are not compatible with the traditional USB-A port.


The Development of PD (Power Delivery) Chargers

The development of PD (Power Delivery) chargers has been driven by the increasing demand for fast and efficient charging for smartphones, laptops, and other electronic devices.


PD chargers were introduced in 2012 as a new standard for USB charging, and since then, they have undergone significant developments and improvements. The first generation of PD chargers supported up to 100W of power delivery, which was a significant improvement over previous USB charging standards.


As technology has advanced, the development of PD chargers has continued. The latest generation of PD chargers supports up to 240W of power delivery, which is enough to charge even high-end laptops and other power-hungry devices.


One of the key developments in PD charger technology has been the use of gallium nitride (GaN) transistors. These transistors are more efficient than traditional silicon transistors, which means that PD chargers that use GaN technology can be smaller and lighter while still delivering high power.


Another development in PD charger technology is the incorporation of USB-C ports. USB-C is a newer, more versatile connector that supports higher power delivery than traditional USB-A connectors. PD chargers with USB-C ports can provide fast charging to a wide range of devices, including laptops and smartphones.


Overall, the development of PD chargers has led to faster and more efficient charging for electronic devices. As technology continues to advance, it is likely that we will see further developments in PD charger technology, such as even higher power delivery and more efficient charging methods.


What is QC Charging?

QC charging stands for "Quick Charge" charging. It is a fast charging technology developed by Qualcomm, which is used in various mobile devices such as smartphones, tablets, and laptops.

This technology enables devices to charge faster by delivering a higher amount of power to the device's battery, thereby reducing the charging time. QC charging works by increasing the voltage of the charging process, allowing for faster charging while maintaining safety standards.

QC charging is supported by various mobile device manufacturers and is becoming increasingly popular as people demand faster charging times for their devices.

Variations of Qualcomm Quick Charge Technology

Qualcomm Quick Charge technology is a fast charging standard that is widely used in smartphones and other electronic devices. There are several variations of Qualcomm Quick Charge technology, each with its own set of features and compatibility.

  1. Quick Charge 1.0: This was the first version of Quick Charge technology, which was introduced in 2013. It provided up to 40% faster charging than conventional charging methods and was compatible with devices that used Qualcomm Snapdragon processors.

  2. Quick Charge 2.0: This version of Quick Charge was introduced in 2014 and provided up to 75% faster charging than conventional charging methods. It also had improved compatibility with non-Snapdragon devices and used a new charging algorithm to optimize charging speed.

  3. Quick Charge 3.0: Introduced in 2015, Quick Charge 3.0 provided up to 4x faster charging speed than conventional charging methods and was also backwards-compatible with Quick Charge 2.0 devices. It also had improved safety features, including over-voltage protection and thermal management.

  4. Quick Charge 4: This version of Quick Charge was introduced in 2016 and provided up to 20% faster charging and 30% higher efficiency than Quick Charge 3.0. It also had improved safety features, including USB Type-C and USB Power Delivery (USB-PD) compatibility.

  5. Qualcomm Quick Charge 5.0. Introduced in 2020, the latest version of QC technology delivers fast speeds, making it the fastest commercial charging option for Android devices. Qualcomm Quick Charge 5.0 improved upon previous versions of QC technology through numerous efficiency improvements and new battery technology, accessories, and safety features.

PD Vs. QC: What are the Main Differences?


PD (Power Delivery) and QC (Quick Charge) are two different fast-charging technologies used in modern devices. The main differences between the two are as follows:

  1. Power Delivery (PD) technology is a universal standard created by the USB-IF Association. It can deliver higher power levels and allows for power bi-directionality. On the other hand, Quick Charge (QC) technology is proprietary and developed by Qualcomm, and can only be used on devices with compatible Qualcomm Snapdragon processors.

  2. PD technology utilizes a USB-C connector, while QC technology requires a specific Qualcomm Quick Charge-compatible charger and device.

  3. PD technology allows for more customization of the charging process, such as varying voltage and current levels, whereas QC technology is more limited in terms of customization.

  4. PD technology supports a wider range of power delivery, up to 100 watts, while QC technology currently supports up to 65 watts.

  5. QC technology has a commonly used voltage of 5V, 9V, or 12V, while PD technology has commonly used voltages of 5V, 9V, 12V, 15V, or 20V.


ANDAR PD Charger Can Power Your Devices Fast


Andar Technology (Shenzhen) Co., Ltd, established in 2012, is a subsidiary of HK Hitoh Co. Ltd. The company is located in Funing High-tech Zone, Fuyong Town, and also has a branch in the United States that was founded in the same year.

Andar specializes in designing, manufacturing, and selling switches, smart sockets, multi-port portable power adapters, and other types of built-in power panels, including PD Charger, Wall Mount AC Adapters, Desktop Power Adapter, Smart Fast Charger and Smart Control Board.

With years of professional experience and a high level of competence, we offer comprehensive power solutions. Our products are widely used in household appliances, digital accessories, power tools, and office equipment.


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The company has got hundreds of international safety certifications such as: UL PSE GS CE KC SAA 3C, we can provide high standard, efficient power supply ranging from 1W to 120W.


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  • Contact: Rose

  • Tel:00852-27935511

  • Mail: rose_xia@andar-sz.com

  • Add: Room No. 327, 611 E Park Street, Carbondale, IL, 62901 USA


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