单芯片SoC Tx,高集成度,Juggle保护,自动检测,符合WPC1.2.4 EPP


NU1705A is a new generation of highly integrated wireless power transmitter solution, it integrates a full-bridge power stage designed for a wide frequency range, a 32bit MCU core. The power system integrates all critical functions, such as high-efficiency power FETs, low-EMI FET drivers, bootstrap circuit, 4.8V/1.8V integrated LDO power supply, lossless current measurement. The proprietary current-measurement circuit provides the accurate current reading used for the FOD (Foreign Object Detection) power measurement, in-band communication, Q factor detection, and digital demodulation. It also includes protection functions such as input under-voltage lockout, over-voltage protection, over current protection, innovative unique Juggle Protection circuit, and thermal shutdown. These provisions further enhance the reliability of the total system solution. The device is housed in a thermally enhanced 4mm×4mm QFN package.


  • • Integrated High-Efficiency Full- Bridge FETs and FET Driver Optimized for Low EMI 

    • Integrated 4.8V and 1.8V LDO 

    • High-Accuracy, Lossless Current Measurement for FOD and In-Band Communication 

    • Integrated high precision Q Factor Measurement 

    • Integrated Low-Error-Rate Digital Demodulation 

    • Robust OVP, OCP, SCP, OJP (Juggle Protection) and OTP Protection 

    • I2C and UART Interfaces 

    • 11 channel, 15-bit ADC 

    • Integrated 92MHz, 32Bit/32K MTP/2K SRAM MCU Core 

    • Integrated SCP/AFC protocol function 

    • Ultra-Low quiescent current in SLEEP mode: <20uA 

  • • 无线充电