iPhone 17 Fast Charging: USB PD 3.2 SPR AVS Technology

iPhone 17 & SPR AVS Technology

SPR AVS (Standard Power Range Adjustable Voltage Supply) represents a significant advancement in USB Power Delivery technology. The USB-IF officially integrated SPR AVS into the PD 3.2 specification for devices under 100W, enabling the iPhone 17 to support intelligent voltage regulation throughout the charging process.

The SPR AVS protocol delivers measurable improvements in charging efficiency, thermal management, and battery health. Learn more about SPR AVS technology implementation.

• Enhanced Thermal Management: SPR AVS shifts voltage regulation from the device to the charger, significantly reducing heat generation during charging. This enables the iPhone 17 to maintain higher power levels for extended periods while staying cooler.
• Extended Battery Longevity: By minimizing thermal stress and voltage fluctuations, SPR AVS technology protects battery cells from degradation. The precise power delivery is optimized for low-voltage, high-current charging scenarios that extend overall battery lifespan.
• Open Standard Advantage: Unlike proprietary charging protocols, SPR AVS is an open standard with no licensing fees. This reduces costs for manufacturers and consumers while ensuring broad compatibility across devices and chargers.