SLVSEW9B August   2019  – December  2019 TPS66120 , TPS66121

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Function Table
      1.      TPS6612x Block Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Recommended Supply Load Capacitance
    5. 6.5  Thermal Information
    6. 6.6  PPHV Power Switch Characteristics
    7. 6.7  Power Path Supervisory
    8. 6.8  VBUS LDO Characteristics
    9. 6.9  Thermal Shutdown Characteristics
    10. 6.10 Input-output (I/O) Characteristics
    11. 6.11 Power Consumption Characteristics
    12. 6.12 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 20-V Sink (PPHV Power Path)
        1. 7.3.1.1 PPHV Soft Start
        2. 7.3.1.2 PPHV Reverse Current Protection (RCP)
      2. 7.3.2 Overtemperature Protection
      3. 7.3.3 VBUS Overvoltage Protection (OVP)
      4. 7.3.4 Power Management and Supervisory
        1. 7.3.4.1 Supply Connections
        2. 7.3.4.2 Power Up Sequences
          1. 7.3.4.2.1 Normal Power Up
          2. 7.3.4.2.2 Dead Battery Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 State Transitions
        1. 7.4.1.1 DISABLED State
        2. 7.4.1.2 SNK State
      2. 7.4.2 SNK FAULT State
      3. 7.4.3 Device Functional Mode Summary
      4. 7.4.4 Enabling the PPHV Sink Path
      5. 7.4.5 Faults
        1. 7.4.5.1 Fault Types
  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 External VLDO Capacitor (CVLDO)
        2. 8.2.2.2 PPHV, VBUS Power Path Capacitance
        3. 8.2.2.3 VBUS TVS Protection (Optional)
        4. 8.2.2.4 VBUS Schottky Diode Protection (Optional)
        5. 8.2.2.5 VBUS Overvoltage Protection (Optional)
        6. 8.2.2.6 Dead Battery Support
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.4.1 Supply Connections

Figure 9 shows the TPS66120 VIN being supplied from a 3.3-V supply. The VLDO output may or may not be used to supply other circuitry in the application, for example a PD Controller. During dead battery, the internal 3.3-V VBUS LDO provides power to the TPS66120 and the VLDO output. Once VIN input supply becomes available, the VBUS LDO is disabled and VIN provides power to the VLDO output.

Figure 10 shows the TPS66121 VIN being supplied from a 5-V supply. The VLDO output may or may not be used to supply power to external circuitry. During dead battery, the internal 5-V VBUS LDO provides power to the TPS66121 and the VLDO output. Once VIN input supply becomes available, the VBUS LDO is disabled and VIN provides power to the VLDO output.

Another option is to power the TPS66120 from the VBUS LDO only as shown in Figure 11. Since VIN is tied to GND, power to the TPS66120 is provided by the 3.3-V VBUS LDO when VBUS power is present. The VLDO output may be used optionally to supply power to external circuitry.

Similarly, Figure 12 shows the TPS66121 being powered from the VBUS LDO only. Since VIN is tied to GND, power to the TPS66121 is provided by the 5-V VBUS LDO when VBUS power is present. The VLDO output may be used optionally to supply power to external circuitry.

TPS66120 TPS66121 fig_pwr_supply_vin3v3_66120.gifFigure 9. TPS66120 VIN 3.3-V Supply
TPS66120 TPS66121 fig_pwr_supply_vin5v0_66121.gifFigure 10. TPS66121 VIN 5-V Supply
TPS66120 TPS66121 fig_pwr_supply_no_vin_66120.gifFigure 11. TPS66120 VBUS Powered
TPS66120 TPS66121 fig_pwr_supply_no_vin_66121.gifFigure 12. TPS66121 VBUS Powered