GaN Charger: Why Does It Fast Charge Your iPhone 15?

5 min readOct 26, 2023


As our reliance on smartphones continues to grow, we are constantly seeking ways to charge our devices quickly and conveniently. In order to achieve higher charging powers, traditional chargers were usually built with bulky sizes and had certain limitations in terms of power conversion efficiency and heat dissipation.

As technology advanced, the emergence of GaN (Gallium Nitride) chargers has revolutionized the way we charge. They can deliver enhanced efficiency, faster charging speed, and broader compatibility while maintaining minimum size.

What Is GaN?

GaN, short for Gallium nitride, is a very hard wurtzite crystal-structured compound of Gallium and Nitride. With its superior mechanical stability, this compound, as a direct bandgap semiconductor, has been widely used in light-emitting diodes (LED) since the 1990s.

With a wide bandgap of 3.4eV, GaN boasts high electron mobility, which refers to the ability of electrons to move through the material, allowing for faster switching speeds and improved efficiency in power electronics. Its ability to handle high voltages and current densities efficiently makes it an ideal candidate for charging applications, radio frequency (RF) amplifiers, laser diodes, and more.

Recognizing this potential, GaN chargers have been introduced into the market to provide enhanced performance and superior charging experiences.

Why Is GaN Superior to Silicon?

To understand why GaN chargers have gained popularity, it’s necessary to compare them to traditional silicon-based chargers.

Traditional silicon-based chargers use silicon as a semiconductor, which has dominated the charging industry for decades. The abundance of silicon material makes it highly affordable and readily available for large-scale manufacturing, and its reliability makes it a popular choice applied to chargers.

However, with a moderate bandgap of 1.12eV, silicon has lower electron mobility, which results in low efficiency in handling high voltages and currents and increasing switching losses at high power levels, thus leading to longer charging times. Furthermore, its low efficiency makes it easy to generate more heat, increasing power dissipation and requiring additional cooling mechanisms.

Limited by its properties, the faster a silicon-based wall charger can charge, the bigger the size it has. And as people’s demand for faster and more reliable charging solutions increases, wall chargers become bulkier.

In contrast, GaN chargers leverage the unique properties of Gallium Nitride to overcome these limitations. With higher electron mobility, faster charging speeds and reduced energy loss, GaN chargers can deliver higher power density and more efficient charging, leading to significantly reduced charging times.

What Are the Advantages of GaN Chargers?

Compact Size:
One of the significant advantages of GaN chargers is their compact and lightweight design. Traditional chargers are often bulky and occupy unnecessary space, making them inconvenient for travel or everyday use.

GaN chargers, on the other hand, offer a sleek and streamlined form factor, reducing size and weight without sacrificing performance. Their smaller dimensions allow you to carry them in your pocket or bag effortlessly. This convenient portability is especially beneficial for individuals who are always on the go or for frequent travelers who are looking to maximize luggage space.

Fast Charging Speed:
GaN chargers have redefined what it means to charge devices quickly. Thanks to their unique properties, such as increased power density and enhanced conductivity, GaN chargers can handle higher voltages and currents, resulting in significantly reduced charging times. This means you can charge your devices in a fraction of the time compared to traditional chargers. Whether you need a quick boost before heading out or want to charge multiple devices simultaneously without compromising speed, GaN chargers deliver unparalleled efficiency and convenience. This rapid charging capability is particularly beneficial in emergency situations and when you’re pressed for time.

Reliable Charging Experience:
When it comes to charging your valuable devices, safety is paramount. GaN chargers prioritize safety through built-in protection mechanisms. These chargers undergo rigorous testing to ensure compliance with global safety standards, protecting against over-voltage, over-current, short circuits, and overheating.

GaN chargers provide peace of mind, allowing you to charge your devices without worrying about potential damage or accidents. The advanced safety features embedded within GaN chargers safeguard not only the charger itself but also the devices being charged. This protection is essential for preserving the lifespan of your devices and ensuring their optimal performance over time.

Broad Compatibility:
Despite its compact size, GaN chargers are usually designed to be compatible with various charging standards like USB-C Power Delivery (PD), Quick Charge (QC) and Programmable Power Supply (PPS). They are versatile in charging a wide range of devices, including smartphones, tablets, laptops, smartwatches, and more. This flexibility makes GaN chargers a valuable investment, as they can serve as a single charging solution for those who own multiple devices. Say goodbye to tangled cords and cumbersome adapters, and enjoy a hassle-free charging experience wherever you go.

The Best GaN Charger for Your iPhone 15

iPhone 15 is coming this September, probably with no charger included. If you’re looking for a fast charger for your iPhone 15, opt for a GaN charger.

Gallium Nitride chargers outperform traditional silicon-based chargers in terms of their higher electron mobility, faster charging times, reduced energy losses, compacter sizes, and versatile compatibility.

PITAKA released a USB C 30W GaN charger in September, which is highly recommended for your iPhone 15 and other devices. Whether your device is a smartphone, tablet, or laptop, this charger offers optimal and efficient charging power.

With its remarkable charging speed, this fast charger can recharge your MacBook to 50% within just 70 minutes. Similarly, with lightning-fast efficiency, it can refuel your iPhone to 50% in a mere 30 minutes. This unmatched speed helps save your precious time and handle more tasks.

Crafted from recycled aramid fiber, PITAKA GaN charger gives a minimalist look and 3D textured grip while retaining light weight and robust construction. The compact size (about 31cm³) makes it easy to pack in any pocket or handbag on the go.

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