ZHCSM89 july   2021 BQ51013B-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Description (continued)
  7. 6 Device Comparison Table
  8. 7 Pin Configuration and Functions
  9. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  Details of a Qi Wireless Power System and BQ51013B-Q1 Power Transfer Flow Diagrams
      2. 9.3.2  Dynamic Rectifier Control
      3. 9.3.3  Dynamic Efficiency Scaling
      4. 9.3.4  RILIM Calculations
      5. 9.3.5  Input Overvoltage
      6. 9.3.6  Adapter Enable Functionality and EN1/EN2 Control
      7. 9.3.7  End Power Transfer Packet (WPC Header 0x02)
      8. 9.3.8  Status Outputs
      9. 9.3.9  WPC Communication Scheme
      10. 9.3.10 Communication Modulator
      11. 9.3.11 Adaptive Communication Limit
      12. 9.3.12 Synchronous Rectification
      13. 9.3.13 Temperature Sense Resistor Network (TS)
      14. 9.3.14 3-State Driver Recommendations for the TS/CTRL Pin
      15. 9.3.15 Thermal Protection
      16. 9.3.16 WPC v1.2 Compliance – Foreign Object Detection
      17. 9.3.17 Receiver Coil Load-Line Analysis
    4. 9.4 Device Functional Modes
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 BQ51013B-Q1 Wireless Power Receiver Used as a Power Supply
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Using The BQ51013B-Q1 as a Wireless Power Supply: (See )
          2. 10.2.1.2.2 Series and Parallel Resonant Capacitor Selection
          3. 10.2.1.2.3 Recommended RX Coils
          4. 10.2.1.2.4 COMM, CLAMP, and BOOT Capacitors
          5. 10.2.1.2.5 Control Pins and CHG
          6. 10.2.1.2.6 Current Limit and FOD
          7. 10.2.1.2.7 RECT and OUT Capacitance
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Dual Power Path: Wireless Power and DC Input
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curves
      3. 10.2.3 Wireless and Direct Charging of a Li-Ion Battery at 800 mA
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
        3. 10.2.3.3 Application Curves
  12. 11Power Supply Recommendations
  13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  14. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 第三方产品免责声明
      2. 13.1.2 Development Support
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 静电放电警告
    6. 13.6 术语表
  15. 14Mechanical, Packaging, and Orderable Information

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9.3.16 WPC v1.2 Compliance – Foreign Object Detection

The BQ51013B-Q1 is a WPC v1.2 compatible device. In order to enable a Power Transmitter to monitor the power loss across the interface as one of the possible methods to limit the temperature rise of Foreign Objects, the BQ51013B-Q1 reports its Received Power to the Power Transmitter. The Received Power equals the power that is available from the output of the Power Receiver plus any power that is lost in producing that output power (the power loss in the Secondary Coil and series resonant capacitor, the power loss in the Shielding of the Power Receiver, the power loss in the rectifier). In the WPC1.2 specification, foreign object detection (FOD) is enforced. This means the BQ51013B-Q1 will send received power information with known accuracy to the transmitter.

WPC v1.2 defines Received Power as “the average amount of power that the Power Receiver receives through its Interface Surface, in the time window indicated in the Configuration Packet”.

To receive certification as a WPC v1.2 receiver, the Device Under Test (DUT) is tested on a Reference Transmitter whose transmitted power is calibrated, the receiver must send a received power such that:

Equation 5. 0 > (TX PWR)REF – (RX PWR out)DUT > –375 mW

This 375-mW bias ensures that system will remain interoperable.

WPC v1.2 Transmitter is tested to see if it can detect reference Foreign Objects with a Reference receiver.

WPC v1.2 Specification will allow much more accurate sensing of Foreign Objects.