NX1WP10

NX1WP10 A4WP compliant high frequency wireless charging receiver front end Rev. 1 — 1 October 2015 Objective short data sheet 1. General description The NX1WP10 is an A4WP (Alliance for Wireless Power) compliant wireless power receiver front end. It contains a high-voltage, highly efficient active rectifier, integrated LDOs, a DC-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 detuning function. The DC-to-DC regulator delivers an adjustable output voltage between 4.2 V and 10 V with a maximum DC current of up to 1.1 A. It is used to charge portable devices through a PMU or a charging controller. The integrated LDOs are directly linked to the rectifier output. They are automatically enabled once a sufficient voltage level at the output of the rectifier is reached. These voltages are used to supply the corresponding wireless power receiver controller and BT-LE transceiver. The host microcontroller configures the on-chip controller for automatic interrupt-driven system control. The microcontroller can measure the rectifier output voltage, current level information, junction temperature and external temperature sensor information with the ADC. It controls the DC-to-DC converter as well as the GPIOs. Key safety functions are implemented with low power analog comparators. For example, one of the select...