SLVSGT4A December   2023  – January 2024 TPS61289

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Bidirectional Operation Configuration
      2. 6.3.2 VCC Power Supply
      3. 6.3.3 VHIGH and VCC Undervoltage Lockout (UVLO)
      4. 6.3.4 Enable and Programmable EN/UVLO
      5. 6.3.5 Switching Frequency
      6. 6.3.6 Programmable Switching Peak and Valley Current Limit
      7. 6.3.7 External Clock Synchronization
      8. 6.3.8 VHIGH Overvoltage Protection
      9. 6.3.9 Thermal Shutdown
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Bootstrap Capacitor Selection
        2. 7.2.2.2 Inductor Selection
        3. 7.2.2.3 MOSFET Selection
        4. 7.2.2.4 VLOW/VHIGH Output Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
        1. 7.4.2.1 Thermal Considerations
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.3.1 Bidirectional Operation Configuration

When operating in bidirectional mode, the FB pin must be connected to the center tap of a resistor divider to make the VFB = 0.7V to 0.8V and the COMP pin is connected to an external compensation control signal to implement CC/CV control. To prevent the reverse current from the VHIGH side to the VLOW side, the device will not switch if the COMP pin voltage is below 0.65V. The MODE pin can be used to select the buck or boost mode, the VLOW must be connected to a sink/source power equipment, for example a Li-ion battery. The internal LDO of the TPS61289 is always powered by the VHIGH pin. A valid voltage above VHIGH_UVLO must be applied to the VHIGH pin before the TPS61289 is enabled. Enable the TPS61289 after setting the VHIGH, FB, COMP, VLOW, and Mode pins.