SLVSHZ1 June   2024 TPS1HTC100-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1. 4.1 Recommended Connections for Unused Pins
  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 SNS Timing Characteristics
    7. 5.7 Switching Characteristics
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Accurate Current Sense
      2. 7.3.2 Programmable Current Limit
        1. 7.3.2.1 Capacitive Charging
      3. 7.3.3 Inductive-Load Switching-Off Clamp
      4. 7.3.4 Full Protections and Diagnostics
        1. 7.3.4.1 Short-Circuit and Overload Protection
        2. 7.3.4.2 Open-Load Detection
        3. 7.3.4.3 Thermal Protection Behavior
        4. 7.3.4.4 UVLO Protection
        5. 7.3.4.5 Reverse Polarity Protection
        6. 7.3.4.6 Protection for MCU I/Os
      5. 7.3.5 Diagnostic Enable Function
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Functional Modes
  9. 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 Dynamically Changing Current Limit
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
        1. 8.4.2.1 Without a GND Network
        2. 8.4.2.2 With a GND Network
        3. 8.4.2.3 Thermal Considerations
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.4 Full Protections and Diagnostics

Current Sensing is active when DIAG_EN enabled. When DIAG_EN is low, current sense is disabled. The SNS output is in high-impedance mode.

Table 7-1 DIAG_EN Logic Table
DIAG_ENEN ConditionProtections and Diagnostics
HIGH

HIGH

See Fault Table
LOW
LOWHIGHDiagnostics disabled, FAULT and SNS output set to high impedance. Protection is normal.
LOW
Table 7-2 DIAG_EN=HIGH Status Table
Conditions ENVOUTFAULTSNS BehaviorRecovery
NormalLLHi-Z0Normal
HHHi-ZILoad / KSNSNormal
OvercurrentHVS - ILIM*RLOADLVSNSFHHolds the current at the current limit until thermal shutdown
OvervoltageHH →LLVSNSFHChannel turns off if VS > VS,OVPR, turns back on if VS < VS,OVPRF
STG, Relative Thermal Shutdown, Absolute Thermal ShutdownHH→LLVSNSFHShuts down when devices hits relative or absolute thermal shutdownAuto retries when THYS is met and time has been longer than tRETRY amount of time
Open loadHHHi-ZILoad / KSNS = approximately 0Normal behavior, user can judge if it is an open load or not
LHLVSNSFHInternal pullup resistor is active. If VS – VOUT < VOL then fault activeClears when fault goes away
Reverse PolarityxxxxChannel turns on to lower power dissipation. Current into ground pin is limited by external ground network