SLUSB96A November   2012  – December 2015

 

  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 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Fundamentals
      2. 7.1.2 Wireless Power Consortium (WPC)
      3. 7.1.3 Power Transfer
      4. 7.1.4 Communication
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Capacitor Selection
      2. 7.3.2  A6 Coil Specification
      3. 7.3.3  Option Select Pins
      4. 7.3.4  LED Modes
      5. 7.3.5  Parasitic Metal Object Detect (PMOD) and Foreign Object Detection (FOD)
      6. 7.3.6  Shut Down by Thermal Sensor or Trigger
      7. 7.3.7  Fault Handling and Indication
      8. 7.3.8  Power Transfer Start Signal
      9. 7.3.9  Power-On Reset
      10. 7.3.10 External Reset, RESET Pin
      11. 7.3.11 Trickle Charge and CS100
      12. 7.3.12 Current Monitoring Requirements
      13. 7.3.13 Overcurrent Protection
      14. 7.3.14 MSP430G2101 Low Power Supervisor
      15. 7.3.15 All Unused Pins
  8. 8 Application and Implementation
    1. 8.1 Typical Application
      1. 8.1.1 Detailed Design Procedure
        1. 8.1.1.1 Input Regulator
        2. 8.1.1.2 Power Trains
        3. 8.1.1.3 Signal Processing Components
        4. 8.1.1.4 Low-Power Supervisor
        5. 8.1.1.5 Disabling Low-Power Supervisor Mode
        6. 8.1.1.6 Input Power Requirements
    2. 8.2 System Examples
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Community Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Expanded Free Positioning Using Three-Coil Transmit Array
  • Intelligent Control of Wireless Power Transfer
  • Conforms to Wireless Power Consortium (WPC) A6 Transmitter Specification
  • Digital Demodulation Reduces Components
  • WPC1.1 Ready, Including Foreign Object Detection (FOD)
  • Enhanced Parasitic Metal Detection (PMOD) Assures Safety
  • Overcurrent Protection
  • LED Indication of Charging State and Fault Status

2 Applications

  • WPC 1.1 Ready Wireless Chargers for:
    • Smart Phones and Other Handhelds
    • Hermetically Sealed Devices and Tools
    • Cars and Other Vehicles
    • Tabletop Charge Surfaces
  • See www.ti.com/wirelesspower for More Information on TI's Wireless Charging Solutions

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3 Description

The bq500410A device is a free-positioning digital wireless power controller that integrates all functions required to control wireless power transfer to a WPC compliant receiver. It is WPC 1.1 ready and designed for 12-V systems but applicable to other supply voltages. The bq500410A pings the surrounding environment for WPC compliant devices to be powered, safely engages the device, reads the packet feedback from the powered device, and manages the power transfer. A charging area of at least 70 mm × 20 mm provides flexible receiver placement on a transmitter pad. The bq500410A supports both Parasitic Metal Detection (PMOD) and 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 path. Should any abnormal condition develop during power transfer, the bq500410A handles it and provides fault indicator outputs. Comprehensive protection features provide a robust design to protect the system in all receiver placements.

The bq500410A is available in an area-saving 48-pin, 7-mm × 7-mm VQFN package and operates over a temperature range from –40°C to 110°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
bq500410A VQFN (48) 7.00 mm × 7.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

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Functional Diagram

bq500410A alt_lusb96.gif

Efficiency Vs System Output Current

bq500410A eff_lusb96.png