Ki Wireless Power Transceiver System (Tx)

The Ki wireless power standard, developed by the Wireless Power Consortium (WPC), combines wireless power transfer with NFC communication to deliver power wirelessly from integrated surfaces, eliminating the need for traditional cables. This Ki wireless power transceiver system (Tx) integrates inductive power transfer with industry‑leading sinusoidal NFC communication to dynamically deliver power between a surface‑integrated transmitter and a Ki receiver (Rx) embedded in the appliance. Wireless power zones can deliver up to 2kW.

Multiple system configurations support a wide range of use cases, including a connected high‑end GUI system with rich HMI features, a mid‑range design for streamlined control, and a concealed design with controls managed by the host appliance or an external controller.

System Benefits:

• Dynamic, appliance‑side power control enables seamless adjustment from 0kW to 2kW directly at the receiver (Rx), supporting precise and efficient power management.
• Industry‑leading sinusoidal NFC communication eliminates the need for a dedicated NFC power amplifier while ensuring robust transmitter–receiver coordination, even under high misalignment conditions.
• Flexible and scalable architecture with full Renesas platform support, including inverter power devices, MCUs, NFC communication, wireless connectivity, and power management.
• Optional GaN power stages reduce switching losses and improve efficiency in compact, high‑power system designs.
• System variants support diverse integration models, including:
  • High‑end connected GUI design featuring a TFT‑based capacitive touch interface with integrated Bluetooth^® Low Energy (LE) or Wi‑Fi^® for smartphone interaction, monitoring, and appliance integration.
  • Mid‑range capacitive touch design delivering streamlined appliance control through intuitive touch buttons and sliders.
  • Low‑end concealed design optimized for hidden installations, with the transmitter embedded beneath surfaces and control managed by the host appliance or an external controller.