The Qi2 wireless charging standard, developed by the Wireless Power Consortium (WPC), represents a significant advancement in wireless charging technology. Building on Apple’s innovative magnetic power profile, Qi2 aims to deliver a superior wireless charging experience, ensuring optimal compatibility between devices and chargers. This new standard not only enhances charging efficiency and speed but also sets the stage for future advancements and additional functionalities.
Injoinic IP6802 Wireless Charging Chip
IP6802 is a complete single-chip wireless charging SOC. It uses the PD 3.0 protocol and supports both PD fast charging and DP&DM fast charging. It automatically adjusts fast charging voltage and supports input voltages from 4V to 20V. The chip includes a full-bridge driver and digital demodulation, which means no external drivers or operational amplifiers are required. It can realize a complete Qi2 wireless charging product by integrating four MOSFETs and a small number of external components.
The IP6802 chip also integrates a 32-bit MCU, ADC, timer, H-bridge driver, I2C communication, demodulation and decoding circuits, and sufficient IO resources. It also supports customization and certification testing. The chip also has built-in 32KB MTP memory, enabling firmware upgrades, customizable LED indicator effects, and user customization through PC-based software.
In addition, the IP6802 features dynamic power scaling to ensure uninterrupted wireless charging even when the USB power adapter is insufficient. The chip supports static and dynamic FOD foreign object detection, external NTC thermistor for over-temperature protection, and protection against input overvoltage, overcurrent, and undervoltage conditions.
The circuit diagram above shows the practical application of the chip. The operation is simple and clear. Only resistors, capacitors and corresponding MOSFETs are needed to realize a complete wireless charger design. This reduces material and production costs through highly integrated chip technology. The Qi2 wireless charging standard, coupled with the IP6802 SoC, marks a significant leap forward in the realm of wireless charging. With enhanced compatibility, efficiency, and a host of integrated features, the IP6802 paves the way for innovative wireless charging solutions. As this technology continues to evolve, users can expect even more reliable, fast, and customizable wireless charging experiences in the near future.
