SLVSIF4 September   2026 TPS481HS04-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  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 SPI Timing Requirements
    7. 5.7 Switching 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 Driving Capacitive, Resistive and Inductive Loads
      2. 7.3.2 Protection Mechanisms
        1. 7.3.2.1 Overcurrent Protection
          1. 7.3.2.1.1 Inrush Period - Overcurrent Protection
          2. 7.3.2.1.2 Overcurrent Protection - Steady State Operation
          3. 7.3.2.1.3 Programmable Fuse Protection
          4. 7.3.2.1.4 Immediate Shutdown Overcurrent Protection (IOCP)
        2. 7.3.2.2 Output Disable Function (OUT_DIS)
        3. 7.3.2.3 Thermal Shutdown
        4. 7.3.2.4 Reverse Battery
      3. 7.3.3 Diagnostic Mechanisms
        1. 7.3.3.1 Integrated ADC
        2. 7.3.3.2 Analog and Digital Current Sense Output
        3. 7.3.3.3 Output Voltage Measurement
        4. 7.3.3.4 MOSFET Temperature Measurement
        5. 7.3.3.5 VBB Voltage Measurement
        6. 7.3.3.6 VOUT Short-to-Battery and Open-Load
          1. 7.3.3.6.1 Measurement With Channel Output (FET) Enabled
          2. 7.3.3.6.2 Detection With Channel Output Disabled
        7. 7.3.3.7 VOUT Short-to-Battery or FET Short Detection For Power at All Times (PAAT) Loads
      4. 7.3.4 Fault Indication (FLT / WAKE)
      5. 7.3.5 SPI Mode Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 State Diagram
      2. 7.4.2 Power Down
      3. 7.4.3 SLEEP
      4. 7.4.4 Low Power Mode (LPM)
      5. 7.4.5 CONFIG or ACTIVE Mode
      6. 7.4.6 LIMPHOME Mode
    5. 7.5 TPS481HS04-Q1 Pre-production Silicon Limitations
      1. 7.5.1 SDO Pin Tristate Discrete Workaround (Only for parallel SPI configuration not for daisy chain)
  9. 8 Register Maps
    1. 8.1 TPS481HS04-Q1 Registers
    2. 8.2 EEPROM (NVM) Overview
  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
      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
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
    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
    1. 12.1 Tape and Reel Information
    2. 12.2 Mechanical Data

7.3.1 Driving Capacitive, Resistive and Inductive Loads

All off-board loads have different type. Each load profile will interact differently with the Smart High Side Switch or Controller and require different considerations to ensure robust protection. Whether the load is resistive, capacitive, inductive, or does not fall neatly into one of those categories such as LEDs will change how driving the load must be approached and designed. A proper output power protection designer needs to understand what load profile will be expected, and then understand how that impacts the design of the output stage.

Table 7-1 Load Driving Using TPS48xHSxx-Q1
TYPE OF LOADLOAD DRIVING METHODREGISTER SETTING
Capacitive Load, CAP_CHRG_CHx = 0x0, 0x2 or 0x3Immediate shutdown (IOCP)

CAP_CHRG_CHx = 0x0

ILIMIT_SET_CHx

INRUSH_DURATION_CHx (used only for VOUT_ERR_CHx indication)

Current limit regulation (ICL_REG)CAP_CHRG_CHx = 0x2, INRUSH_LIMIT_CHx, INRUSH_DURATION_CHx (used only for VOUT_ERR_CHx indication)
Using main path PWM mode

CAP_CHRG_CHx = 0x3, PWM_DTY_CHx and PWM_FREQ_CHx

INRUSH_DURATION_CHx

Resistive or Inductive LoadUsing main path PWM method

CAP_CHRG_CHx = 0x0

PWM_EN_CHx = 0x1, PWM_DTY_CHx and PWM_FREQ_CHx