AVS (Adjustable Voltage Supply) is the newest addition to the USB Power Delivery 3.2 standard. Instead of relying on rigid voltage steps (5V, 9V, 15V, 20V), AVS allows the charger to fine-tune voltage output in 100mV increments.
This precision leads to:
Lower heat during charging
Longer battery health for smartphones & laptops
Higher efficiency compared to standard PD
The iPhone 17 40W charger is the first Apple product to fully utilize AVS, signaling a big shift in the fast-charging market.
Some buyers confuse AVS with brand-specific protocols like Huawei SuperCharge (66W), Xiaomi HyperCharge (120W), or OPPO VOOC. Unlike those, AVS is not private — it is part of the official USB-IF standard.
This means:
AVS chargers will be cross-compatible with future devices.
Brands like Apple, Samsung, and laptop makers are likely to adopt it.
Factories can design multi-protocol GaN chargers (PD + PPS + AVS) to serve both ecosystems.
| Protocol | Introduced | Main Feature | Devices Supported |
| PD (Power Delivery) |
PD 2.0 / 3.0 | Standard fast charging (fixed voltage steps) | iPhone, laptops, tablets |
| PPS (Programmable Power Supply) |
PD 3.0 | Dynamic real-time voltage & current tuning | Samsung Galaxy S/Note, Android phones |
| AVS (Adjustable Voltage Supply) |
PD 3.2 | Ultra-fine voltage adjustments (100mV steps) | iPhone 17 and future USB-C devices |
👉 Bottom line:
PD = universal baseline
PPS = optimized for Android
AVS = optimized for Apple & future cross-brand charging
For more about PD charging basics, check out What Is PD Fast Charging?
If you’re curious about Qualcomm Quick Charge vs PD, we covered it in Quick Charge 3.0 vs. 4.0
For factories and suppliers, supporting AVS isn’t optional — it’s a market necessity.
Charger Manufacturers (OEM/ODM):
Develop 65W, 100W, 140W GaN chargers that support PD + PPS + AVS.
B2B Buyers (Wholesalers, Brands, E-commerce):
Stock AVS-compatible chargers to meet iPhone 17 demand while still serving Samsung/Android customers.
Laptop & Mobile Ecosystem:
Expect multi-port GaN desktop chargers (100W–240W) to adopt AVS for cross-device charging.
👉 AVS adoption means better market coverage and fewer product SKUs for both suppliers and retailers.
For OEM buyers, understanding the Charger Manufacturing Process, can help in selecting reliable partners.
AVS is not replacing PD or PPS but enhancing fast charging with precision voltage control.
Apple leads with iPhone 17’s 40W AVS charger.
Android continues with PPS, but will likely adopt AVS in the future.
Factories & wholesalers should prioritize multi-protocol chargers to serve all markets.
In short: PD is the foundation, PPS is the present, and AVS is the future.
Q1: Is AVS faster than PPS?
Not always. AVS provides precision, while PPS dynamically adjusts current. For iPhone, AVS is more effective; for Samsung, PPS is still superior.
Q2: Can a standard PD charger charge iPhone 17?
Yes, but only AVS-enabled PD chargers unlock the full 40W - 60W fast charging speed.
Q3: Do OEM charger factories need to support AVS now?
Yes. Early adoption means a stronger position in the Apple accessory market, which dominates premium B2B sales.
Q4: What power ranges should suppliers focus on?
From 20W to 240W, with key demand for 45W, 65W, 100W, and 140W GaN AVS chargers in wholesale markets.
