How do you make the world’s best Qi charger – even better? This was the question that faced PopSockets when developing the second generation of their flagship electronic device: the PopPower Home Wireless Charger. For the first-generation product, the team licensed NuCurrent’s MP-A17 Qi transmitter design to address the challenges of PopGrip (and even thick phone case) incompatibility with standard Qi chargers. For the second-generation product (PopPower 2) the mission was clear: design smaller, with more cost and thermal efficiencies for the customer. Easier said than done.
Historically, Qi-certified wireless power transmitters generally have been certified to a maximum separation distance of 3-5mm, which doesn’t allow for space for phone accessories like wallets, cases and, of course, PopGrips. While PopPower 1 addressed the initial challenges of delivering 15W continuously at up to 12mm of separation by leveraging MP-A17, PopPower 2 leverages NuCurrent’s proprietary software to regulate input power outside of the wireless power system or subsystem and thereby does not require front-end power regulation circuitry on the system board. In layman’s terms, NuCurrent developed software that could replace hardware components, ultimately simplifying hardware design, reducing the size of the board, and further mitigating heat for a faster charge.