NX1A4WP

NX1A4WP A4WP compliant high frequency wireless charging receiver front end Rev. 2 — 4 August 2015 Product short data sheet 1. General description The NX1A4WP is an A4WP (Alliance for Wireless Power) compliant wireless power receiver front end. It contains a high-voltage, highly efficient rectifier, integrated LDOs, a D2C-to-DC converter, a multi-channel 12-bit ADC, four GPIOs and a Fast-Mode I2C-bus interface. The integrated rectifier supports voltages of up to 20 V and is protected by an integrated automatic clamping function and an automatic over-power protection function. The DC-to-DC regulator delivers a nominal voltage of 5 V. The host microcontroller configures the on-chip controller for automatic interrupt-driven system control. The controller reads the rectifier output voltage, current level information, junction temperature and external temperature sensor information from the ADC. It controls the DC-to-DC converter as well as the GPIOs. 2. Features and benefits  25 V tolerant antenna input pins  Automatic over-voltage protection of the antenna inputs  6.78 MHz compatible integrated rectifier  High efficiency with an active rectifier and a DC-to-DC converter  Integrated LDOs (1.8 V and 3.3 V up to 100 mA) with auto enable and discharge path  Integrated DC-to-DC buck regulator with 5 V, 1.2 A output  Multi-channel 12-bit ADC subsystem  Temperature sensor (NTC) analog interface  USB bus power supply detection  400 kHz I2C-bus slave interface  Software and...