BQ51051B Datasheet | Texas Instruments

Product Folder Order Now Technical Documents Tools & Software Support & munity bq51050B, bq51051B, bq51052B SLUSB42F - JULY 2012 - REVISED JUNE 2017 bq5105x B High-Efficiency Qi v1.2-pliant Wireless Power Receiver and Battery Charger 1 Features - 1 Single-Stage Wireless Power Receiver and Li-Ion/Li-Pol Battery Charger - bines Wireless Power Receiver, Rectifier, and Battery Charger in a Single, Small Package - 4.20-V, 4.35-V, and 4.40-V Output Voltage Options - Supports a Charging Current up to 1.5 A - 93% Peak AC-DC Charging Efficiency - Robust Architecture - 20-V Maximum Input Voltage Tolerance, With Input Overvoltage Protection - Thermal Shutdown and Overcurrent Protection - Temperature Monitoring and Fault Detection - patible With WPC v1.2 Qi Industry Standard - Power Stage Output Tracks Rectifier and Battery Voltage to Ensure Maximum Efficiency Across the Full Charge Cycle - Available in Small DSGBA and VQFN Packages 2 Applications - Battery Packs - Cell Phones and Smart Phones - Headsets - Portable Media Players - Other Handheld Devices 3 Description The bq5105x device is a high-efficiency, Qi-pliant wireless power receiver with an integrated Li-Ion/Li Pol battery charge controller for portable applications. The bq5105x B devices provide efficient AC-DC power conversion, integrates the digital controller required to ply with Qi v1.2 munication protocol, and provides all necessary control algorithms needed for efficient and safe Li-Ion and Li Pol battery charging. Together with the bq500212A transmitter-side controller, the bq5105x enables a plete wireless power transfer system for direct battery charger solutions. By using near-field inductive power transfer, the receiver coil embedded in the portable device can pick up the power transmitted by transmitter coil. The AC signal from the receiver coil is then rectified and conditioned to apply power directly to the battery. Global feedback is established from the receiver to the...