SLUSB42F July   2012  – June 2017

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Options
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 A Brief Description of the Wireless System
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Using the bq5105x as a Wireless Li-Ion/Li-Pol Battery Charger (With Reference to )
      2. 8.3.2 Details of a Qi Wireless Power System and bq5105xB Power Transfer Flow Diagrams
      3. 8.3.3 Battery Charge Profile
      4. 8.3.4 Battery Charging Process
        1. 8.3.4.1  Precharge Mode (VBAT ≤ VLOWV)
        2. 8.3.4.2  Fast Charge Mode / Constant Voltage Mode
        3. 8.3.4.3  Battery Charge Current Setting Calculations
          1. 8.3.4.3.1 RILIM Calculations
          2. 8.3.4.3.2 Termination Calculations
        4. 8.3.4.4  Battery-Charger Safety and JEITA Guidelines
          1. 8.3.4.4.1 bq51050B and bq51051B JEITA
          2. 8.3.4.4.2 bq51052B Modified JEITA
        5. 8.3.4.5  Input Overvoltage
        6. 8.3.4.6  End Power Transfer Packet (WPC Header 0x02)
        7. 8.3.4.7  Status Output
        8. 8.3.4.8  Communication Modulator
        9. 8.3.4.9  Adaptive Communication Limit
        10. 8.3.4.10 Synchronous Rectification
        11. 8.3.4.11 Internal Temperature Sense (TS Function of the TS/CTRL Pin)
          1. 8.3.4.11.1 TS/CTRL Function
          2. 8.3.4.11.2 Thermal Protection
        12. 8.3.4.12 WPC v1.2 Compatibility
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 bq51050B Used as a Wireless Power Receiver and Li-Ion/Li-Pol Battery Charger
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Series and Parallel Resonant Capacitor Selection
          2. 9.2.1.2.2 COMM, CLAMP and BOOT Capacitors
          3. 9.2.1.2.3 Charging and Termination Current
          4. 9.2.1.2.4 Adapter Enable
          5. 9.2.1.2.5 Charge Indication and Power Capacitors
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Application for Wired Charging
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Blocking Back-Back FET
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RHL|20
  • YFP|28
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Revision History

Changes from E Revision (March 2015) to F Revision

  • Changed all Qi v1.1 and WPC v1.1 To: Qi v1.2 and WPC v1.2 throughout the documentGo
  • Added the Adaptive Communication Limit sectionGo
  • Deleted R1 = 29.402 kΩ R3 = 14.302 kΩ and added a link to SLUS629 in the Internal Temperature Sense (TS Function of the TS/CTRL Pin) section Go

Changes from D Revision (January 2014) to E Revision

  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Added the bq51052B 4.40-V optionGo
  • Updated pinout imagesGo
  • Added thermal pad description in Pin Functions tableGo
  • Added AD voltage to Recommended Operating ConditionsGo
  • Changed RECT overvoltage specification name from VRECT to VOVPGo
  • Changed to ILIM_SHORT, OK from ILIM_SC for clarityGo
  • Added VOREG for bq51052BGo
  • Added minimum current for KILIMGo
  • Changed KILIM TYP value from 300 to 314 (min / max also changed)Go
  • Added IBULK spec for charging minimum and maximumGo
  • Added VRECH for bq51052BGo
  • Added new spec ITerminationGo
  • Changed to VTSB from VTS for clarityGo
  • Changed from ITS-Bias for clarityGo
  • Deleted V0C-F as redundantGo
  • Changed typical JEITA regulation on bq51050B from 4.10 V to 4.06 VGo
  • Changed to clarify CTRL pin high and low levelsGo
  • Changed Thermal shutdown name to TJ-SD for clarityGo
  • Added section to describe Adapter Enable functionGo
  • Changed Synchronous rectifer switchover name to IBAT-SR for clarityGo
  • Added synchronous mode entry for bq51052BGo
  • Deleted note regarding internal junction monitor reducing current - it is not applicable.Go
  • Added section on modified JEITA profile for bq51052BGo
  • Changed TS/CTRL function to correct Termination Packet valueGo
  • Added Taper mode completion for Termination PacketGo
  • Changed Beta value from 4500 to 3380 to match NTC datasheetGo
  • Changed received power maximum error from 250 mW to 375 mW to comply with latest WPC v1.2 specificationGo

Changes from C Revision (February 2013) to D Revision

  • Changed the ABSOLUTE MAXIMUM RATINGS - moved AC1 and AC2 onto a single row with a Min value of –0.8 Go
  • Added section: Details of a Qi Wireless Power System and bq5105xB Power Transfer Flow DiagramsGo
  • Changed text in the Battery Charge Profile sectionGo
  • Changed Battery failure Conditions in Table 1Go
  • Changed Equation 3 and Equation 4Go
  • Changed R2 = 7.81 kΩ To: R1 = 29.402 kΩGo
  • Changed R3 = 13.98 kΩ To: R3 = 14.302 kΩ in the Internal Temperature Sense (TS Function of the TS/CTRL Pin) sectionGo
  • Changed THOT = 0°C To: THOT = 60°CGo
  • Changed Equation 6Go

Changes from B Revision (September 2012) to C Revision

  • First release of the full data sheetGo

Changes from A Revision (August 2012) to B Revision

  • Changed last features bullet from: 1.9 x 3.0mm WCSP and 4.5 x 3.5mm QFN Package Options to: Available in small WCSP and QFN packagesGo
  • Changed Figure 1 and changed caption from: Wireless Power Consortium (WPC or Qi) Inductive Power Charging System, to: Typical System blocks shows bq5105xB used as a Wireless Power Li-Ion/Li-Pol Battery ChargerGo
  • Added note: Visit ti.com/wirelesspower for product details and design resourcesGo

Changes from * Revision (August 2012) to A Revision

  • Changed Regulated BAT(output) voltageGo
  • Changed Recharge threshold for bq51052BGo
  • Deleted ITS-Bias-MaxGo
  • Changed VCOLD to VOC and valuesGo
  • Changed V45C valuesGo
  • Changed V60C valuesGo
  • Changed Figure 25Go
  • Changed Figure 25Go