Wireless Power Receiver Front End 42-Pin WLCSP T/R

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. Reel 7” Q1/T1 Standard mark chips DP

• 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 power-on reset of the on-chip digital controller
• Programmable rectifier modes: active, half-active and passive
• 2 digital General Purpose Input and Output ports (GPIOs) with open-drain outputs and up to 60 V tolerance for control and communication applications
• 2 digital General Purpose Input and Output ports (GPIOs) with open-drain outputs and 25 V tolerance for control and communication applications
• Protection circuitry
  • Automatic over-power protection
  • Automatic AC short to ground for OVP option
  • Automatic DC-to-DC over-voltage protection lock out option
  • Over-temperature protection
  • Over-voltage protection
  • Under-voltage protection
  • Under-voltage lockout (for LDOs and DC-to-DC controller)
• Specified from -40 °C to +85 °C ambient temperature
• 3.56 x 3.41 mm WLCSP with 0.5 mm pitch