描述 Description

NU1708A 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 and a fast charge block of QC/PD protocol. 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.

特性 Features

?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 QC/PD3.0(PPS)/SCP/AFC protocol function
?Ultra-Low quiescent current in SLEEP mode: <20uA
?4mm′4mm QFN Package

應(yīng)用 Application

? 無線充電器