Technology
USB Power Delivery emerges as leading standard amid proprietary fast-charging systems
While USB Power Delivery with PPS provides broad compatibility, several device makers still rely on proprietary protocols for maximum speeds.
The short version
- USB Power Delivery (USB PD) and its Programmable Power Supply (PPS) extension serve as the primary cross-device standard for mobile devices, laptops, and tablets.
- Brands such as Oppo, OnePlus, and Xiaomi maintain proprietary systems like SuperVOOC and HyperCharge, requiring specific adapters and cables to reach maximum advertised rates.
- Modern devices rely on active thermal management and charge-limiting software to reduce battery degradation associated with fast charging.
Key facts
- USB Power Delivery (USB PD) is the most widely adopted universal fast-charging protocol across laptops, tablets, and phones, including Apple, Samsung, and Google devices.[Engadget]
- The USB PD 3.1 specification enables power delivery up to 240W, targeting high-draw hardware such as monitors and laptops.[Engadget]
- Programmable Power Supply (PPS) is a USB PD feature that adjusts voltage and current dynamically during charging to improve efficiency and manage device thermals.[Engadget]
- Proprietary charging technologies like SuperVOOC and HyperCharge generally require brand-matched chargers and cables to reach their peak power ratings.[Engadget]
- Fast-charging devices do not sustain maximum wattage throughout an entire cycle; power is automatically tapered as the battery fills and heat rises.[Engadget]