Features for the BQ51021

• Robust 5-W Solution With 50% Lower Losses
  for Improved Thermals
  • Inductorless Receiver for Lowest Height
    Profile Solution
  • Adjustable Output Voltage (4.5 to 8 V) for Coil
    and Thermal Optimization
  • Fully Synchronous Rectifier With 96% Efficiency
  • 97% Efficient Post Regulator
  • 79% System Efficiency at 5 W
• WPC v1.1 Compliant Communication
• Patented Transmitter Pad Detect Function Improves User
  Experience
• Alignment Feature Through I2C Allows for User
  Training to Find Best Position on Surface of TX

Description for the BQ51021

The bq5102x device is a fully contained wireless power receiver capable of operating with the WPC v1.1 protocol which allows a wireless power system to deliver up to 5 W to the system when used with a Qi inductive transmitter. The bq5102x device provides a single device power conversion (rectification and regulation) as well as the digital control and communication for WPC specification. With market-leading efficiency and adjustable output voltage, the bq5102x device allows for unparalleled efficiency and system optimization. I2C also allows system designers to implement interesting new features such as aligning a receiver on the transmitter surface, or detecting foreign objects on the receiver. The receiver allows for synchronous rectification, regulation and control and communication to all exist in a market leading form factor, efficiency, and solution size.