SLVSGL4A September   2023  – May 2026 TPS1HTC30-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
    1. 5.1 Recommended Connections for Unused Pins
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 SNS Timing Characteristics
    7. 6.7 Switching Characteristics
    8. 6.8 Timing Diagrams
    9. 6.9 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Accurate Current Sense
      2. 8.3.2 Programmable Current Limit
        1. 8.3.2.1 Capacitive Charging
      3. 8.3.3 Inductive-Load Switching-Off Clamp
      4. 8.3.4 Inductive Load Demagnetization
      5. 8.3.5 Full Protection and Diagnostics
        1. 8.3.5.1 Short-Circuit and Overload Protection
        2. 8.3.5.2 Open-Load Detection
        3. 8.3.5.3 Thermal Protection Behavior
        4. 8.3.5.4 Overvoltage (OVP) Protection
        5. 8.3.5.5 UVLO Protection
        6. 8.3.5.6 Reverse Polarity Protection
        7. 8.3.5.7 Protection for MCU I/Os
      6. 8.3.6 Diagnostic Enable Function
    4. 8.4 Device Functional Modes
      1. 8.4.1 Working Mode
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Dynamically Changing Current Limit
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
        1. 9.4.2.1 Without a GND Network
        2. 9.4.2.2 With a GND Network
        3. 9.4.2.3 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.3.5 Full Protection 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 8-1 DIAG_EN Logic Table
DIAG_ENEN ConditionSNS FAULT Protections and Diagnostics
HIGH

HIGH

See Fault TableSee Fault TableSee Fault Table
LOW
LOWHIGHHigh ImpedanceSee Fault TableFAULT pin monitors fault condition and SNS output is set to high impedance. Protection is normal.
LOWHigh ImpedanceDiagnostics disabled, Protection is normal.
Table 8-2 Fault Table
Conditions ENVOUTFAULT (with external pull-up)SNS (with DIAG_EN high)BehaviorRecovery
NormalLLH0Normal
HHHILoad / KSNSNormal
OvercurrentHVS - ILIM*RLOADLVSNSFHHolds the current at the current limit until thermal shutdown
Overvoltage

(Applicable only for TPS1HTC30)

HH →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 loadHHHILoad / 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