SLVSF24C december   2020  – may 2023 TPS272C45

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
    1. 6.1 Recommended Connections for Unused Pins
  8. 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 SNS Timing Characteristics
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  9. 8 Parameter Measurement Information
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Programmable Current Limit
        1. 9.3.1.1 Inrush Current Handling
        2. 9.3.1.2 Calculating RILIMx
        3. 9.3.1.3 Configuring ILIMx From an MCU
      2. 9.3.2 Low Power Dissipation
      3. 9.3.3 Protection Mechanisms
        1. 9.3.3.1 Short-Circuit Protection
          1. 9.3.3.1.1 VS During Short-to-Ground
        2. 9.3.3.2 Inductive Load Demagnetization
        3. 9.3.3.3 Thermal Shutdown
        4. 9.3.3.4 Undervoltage Lockout on VS (UVLO)
        5. 9.3.3.5 Undervoltage Lockout on Low Voltage Supply (VDD_UVLO)
        6. 9.3.3.6 Power-Up and Power-Down Behavior
        7. 9.3.3.7 Overvoltage Protection (OVPR)
      4. 9.3.4 Diagnostic Mechanisms
        1. 9.3.4.1 Current Sense
          1. 9.3.4.1.1 RSNS Value
            1. 9.3.4.1.1.1 Current Sense Output Filter
        2. 9.3.4.2 Fault Indication
          1. 9.3.4.2.1 Fault Event Diagrams
        3. 9.3.4.3 Short-to-Supply or Open-Load Detection
          1. 9.3.4.3.1 Detection With Switch Enabled
          2. 9.3.4.3.2 Detection With Switch Disabled
        4. 9.3.4.4 Current Sense Resistor Sharing
    4. 9.4 Device Functional Modes
      1. 9.4.1 Off
      2. 9.4.2 Diagnostic
      3. 9.4.3 Active
      4. 9.4.4 Fault
  11. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 IEC 61000-4-5 Surge
      2. 10.1.2 Inverse Current
      3. 10.1.3 Loss of GND
      4. 10.1.4 Paralleling Channels
      5. 10.1.5 Thermal Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 RILIM Calculation
        2. 10.2.2.2 Diagnostics
          1. 10.2.2.2.1 Selecting the RISNS Value
      3. 10.2.3 Application Curves
    3. 10.3 Power Supply Recommendations
    4. 10.4 Layout
      1. 10.4.1 Layout Guidelines
      2. 10.4.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    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
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.6 SNS Timing Characteristics

VS = 6 V to 36 V, TJ = -40°C to +125°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SNS TIMING - CURRENT SENSE
tSNSION1 Settling time from rising edge of DIA_EN
50% of VDIA_EN to 95% of settled ISNS		 VENx = 5 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ, IL = 2 A		 30 µs
tSNSION1 Settling time from rising edge of DIA_EN
50% of VDIA_EN to 95% of settled ISNS		 VENx = 5 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ, IL = 100 mA		 60 µs
tSNSION2 Settling time from rising edge of EN and DIA_EN
50% of VDIA_EN  VEN to 95% of settled ISNS		 VENx = VDIA_EN = 0 V to 5 V
VS = 24 V, RSNS = 1 kΩ, RL = 12 Ω		 85 µs
tSNSION3 Settling time from rising edge of EN with DIA_EN HI;
50% of VDIA_EN  VEN to 95% of settled ISNS		 VS=24V VENx = 0 V to 5 V, VDIA_EN = 5 V RSNS = 1 kΩ, IL = 2A 85 µs
tSNSIOFF1 Settling time from falling edge of DIA_EN VENx = 5 V, VDIA_EN = 5 V to 0 V
RSNS = 1 kΩ, IL = 2 A		 20 µs
tSETTLEH Settling time from rising edge of load step VEN1 = 5 V, VDIA_EN = 5 V
RSNS = 1 kΩ, IOUT = 0.8 A to 2 A		 20 µs
tSETTLEL Settling time from falling edge of load step VENx = 5 V, VDIA_EN = 5 V
RSNS = 1 kΩ, IOUT = 2 A to 0.8 A		 20 µs
SNS TIMING - MULTIPLEXER
tMUX Settling time from current sense on CHx to CHy VENx = 5V, VDIA_EN = 5 V
VSEL = 0 V to 5 V
RSNS = 1 kΩ, IOUT1 = 0.2 A, IOUT2 = 2 A		 20 µs