Choose the right charging standard for performance, compatibility, and cost.
Figure 1: Charging Protocol Evolution — from proprietary fragmented solutions to universal USB-C and wireless standards.
Figure 2: Selection Framework — answer key questions about power, compatibility, and scalability to find your protocol.
Engineering Note
For international OEM projects, USB PD has become the de facto standard. Choosing QC today may reduce future compatibility. PD 3.1 is recommended for international retail brands because it provides higher interoperability, USB-IF ecosystem support, and long-term compatibility with both laptops and phones.
Figure 3: Protocol Comparison Matrix — five protocols across six critical dimensions. PD 3.1 leads in power scalability, compatibility, and future flexibility.
Figure 4: Real Project Example — QC-only solution had limited compatibility. Migration to PD + PPS delivers universal compatibility across Apple, Samsung, Google, Windows PCs, and Steam Deck.
CASE: Australian Retail Brand
Original spec: QC 22.5W for BOM savings → Reachinno recommendation: PD 30W + PPS → Result: One SKU compatible with Apple, Samsung, Google, Steam Deck, and Nintendo Switch. 3× addressable market from one protocol decision.
Figure 5: Quick Protocol Selection Guide — four common scenarios with one protocol answer each. Start here if you’re in a hurry.
Download the Full RK-06 Protocol Selection Report (PDF)
Includes complete decision tree, comparison matrix, and protocol selection checklist.
Send us your target market, device category, power requirement, and compatibility goals. Our engineering team will review and recommend the right protocol strategy within 24 hours.
