SLVSHS0A March   2025  – October 2025 TPS482H85-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
  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_24V
    8. 6.8 Switching Characteristics_48V
    9. 6.9 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Pin Current and Voltage Conventions
      2. 7.3.2 Accurate Current Sense
      3. 7.3.3 Adjustable Current Limit
      4. 7.3.4 Inductive-Load Switching-Off Clamp
      5. 7.3.5 Fault Detection and Reporting
        1. 7.3.5.1 Diagnostic Enable Function
        2. 7.3.5.2 Multiplexing of Current Sense
        3. 7.3.5.3 FLT Reporting
        4. 7.3.5.4 Fault Table
      6. 7.3.6 Full Diagnostics
        1. 7.3.6.1 Short-to-GND and Overload Detection
        2. 7.3.6.2 Open-Load Detection
          1. 7.3.6.2.1 Channel On
          2. 7.3.6.2.2 Channel Off
        3. 7.3.6.3 Short-to-Battery Detection
        4. 7.3.6.4 Reverse-Polarity and Battery Protection
        5. 7.3.6.5 Thermal Fault Detection
          1. 7.3.6.5.1 Thermal Protection Behavior
      7. 7.3.7 Full Protections
        1. 7.3.7.1 UVLO Protection
        2. 7.3.7.2 Loss of GND Protection
        3. 7.3.7.3 Loss of Power Supply Protection
        4. 7.3.7.4 Loss of VDD
        5. 7.3.7.5 Reverse Current Protection
        6. 7.3.7.6 Protection for MCU I/Os
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operational 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
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Examples
        1. 8.4.2.1 Without a GND Network
        2. 8.4.2.2 With a GND Network
  10. 9 Device and Documentation Support
    1. 9.1 Third-Party Products Disclaimer
    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

8.2.3 Application Curves

Figure 8-2 shows a test example of soft-start when driving a big capacitive load. Figure 8-3 shows the VDS clamp engaging during inductive load discharge.

TPS482H85-Q1 Capacitive Load Driving
VBB = 48VRILIM = 59kΩZOUT = 100Ω + 47μF
TA = 25°C
Figure 8-2 Capacitive Load Driving
TPS482H85-Q1 Turn-on with Resistive Load
VBB = 48VZOUT = 24ΩTA = 25°C
Figure 8-4 Turn-on with Resistive Load
TPS482H85-Q1 Load Transient Behavior
VBB = 48V

Load: 0A -> 2A -> 0A

TA = 25°C
Figure 8-6 Load Transient Behavior
TPS482H85-Q1 Hot Short (Retry behavior)
VBB = 48VRILIM = OPENZOUT = 100mΩ + 5μH
TA = 25°C
Figure 8-8 Hot Short (Retry behavior)
TPS482H85-Q1 Inductive Load Discharge
VBB = 48V ZOUT = 5mH TA = 25°C
Figure 8-3 Inductive Load Discharge
TPS482H85-Q1 Turn-off with Resistive Load
VBB = 48VZOUT = 24ΩTA = 25°C
Figure 8-5 Turn-off with Resistive Load
TPS482H85-Q1 Hot Short (Latch behavior)
VBB = 48V RILIM = OPEN ZOUT = 100mΩ + 5μH
TA = 25°C
Figure 8-7 Hot Short (Latch behavior)