CN
Wireless Charging Transmitter
NU1020
NU1020 is a family of highly integrated full-bridge power stage IC optimized for wireless power transmitter solutions. The device integrates all critical functions, such as high-efficiency power FETs, lowEMI FET drivers, bootstrap circuit, 5V integrated DC/DC power supply, 3.3V (2.5V configurable) LDO and 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.
Key Spec
Features

• Wide Input Voltage: 4V to 21V

• Integrated High-Efficiency Full- Bridge FETs

• Integrated FET Driver Optimized for Low EMI

• Integrated 5V DC/DC for IC power supply

• Integrated 3.3V (2.5V configurable) LDO to Bias External Circuit and Provide Reference Voltage

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

• Integrated Lossless Q Factor Detection

• Integrated Low-Error-Rate Digital Demodulation

• Input UVLO and OVP

• Over-Current Protection

• Thermal Shutdown

• I 2C Interface

• 4mm * 4mm QFN Package

Applications

• Wireless Power Transmitter Compliant with WPC V1.2.4 Extended Power Profile (EPP)

• Wireless Power Transmitter for Consumer, Industrial, Automotive Aftermarket, and Medical Applications

• Motor Drivers

Datasheet Download
NU1020

2025 / 08 / 26