SLUSCN3A July   2016  – August 2016

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 A11 Coil Specification
      2. 7.3.2 Option Select Pins
      3. 7.3.3 LED Modes
      4. 7.3.4 Foreign Object Detection (FOD) and FOD Calibration
      5. 7.3.5 Shut Down Through External Thermal Sensor or Trigger
      6. 7.3.6 Fault Handling and Indication
      7. 7.3.7 Power Transfer Start Signal
      8. 7.3.8 Power-On Reset
      9. 7.3.9 Trickle Charge and CS100
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power Transfer
        1. 7.4.1.1 Dynamic Power Limiting™
        2. 7.4.1.2 Operating Frequency Limiting
      2. 7.4.2 Communication
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Capacitor Selection
        2. 8.2.2.2 Current Monitoring Requirements
        3. 8.2.2.3 Input Voltage Monitoring
        4. 8.2.2.4 Tank Voltage Monitoring
        5. 8.2.2.5 All Unused Pins
        6. 8.2.2.6 Input Regulation
        7. 8.2.2.7 System Input Power Requirements
        8. 8.2.2.8 LED Modes
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Layout Notes
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Digital Controller Compatible With Wireless Power Consortium (WPC) v1.2 A11 Specification
  • Improved Demodulation Algorithms Provide Robust Communication in Noisy Environments
  • Designed to be Used With bq50002A Analog Front End
    • Note: The bq500511A is Incompatible With the bq50002 Device if Foreign Object Detection is Required
  • Suitable for WPC and Proprietary 5-V Wireless Power Transmitters
  • Supports Received Power Up to 5 W
  • Two Chip Solution Enables High Efficiency Transmitter Designs of >75%
  • Ultra Low Standby Power, Even During Digital Ping (<30 mW)
  • Dynamic Power Limiting (DPL)™ Enables Operation From Inputs Sources With Limited Power
  • System LED Indication of Charging State and Fault Status
  • Accurate Foreign Object Detection Method (FOD) Prevents Heating of Objects Between Transmitter and Receiver Coils

2 Applications

  • WPC Compliant Wireless Chargers for Smart Phones and Wearable Applications
  • Proprietary Wireless Chargers
  • Medical and Industrial Applications
  • Car and Other Vehicle Accessories
  • See www.ti.com/wirelesspower for More Information on TI’s Wireless Power Solutions

3 Description

The bq500511A is a wireless power transmitter controller that, when combined with the bq50002A analog front end (AFE) device, integrates all functions required to create a Qi-compliant or proprietary 5-V transmitter. The bq500511A and bq50002A together provide a compact wireless charger solution. The bq500511A pings the surrounding environment for the receiver devices to be powered, safely engages the device, receives packet communication from the powered device and manages the power transfer according to Wireless Power Consortium (WPC) v1.2 specification.

To maximize flexibility in wireless power control applications, Dynamic Power Limiting™ (DPL) is featured on the bq500511A. DPL enhances user experience by seamlessly optimizing the usage of power available from limited input supplies.

The system supports Foreign Object Detection (FOD) by continuously monitoring the efficiency of the established power transfer, protecting from power lost due to metal objects misplaced in the wireless power transfer field. Should any abnormal condition develop during power transfer, the bq500511A handles the condition and provides indication outputs. Comprehensive status and fault monitoring features enable a low cost yet robust Qi-certified wireless power system design.

The bq500511A is available in a thermally enhanced 6 mm x 6 mm, 40-pin VQFN package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
bq500511A VQFN (40) 6.00 mm x 6.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

bq500511A fbd_sluscn3.gif

Efficiency

bq500511A D001_SLUSCD3.gif