SLVSGY2A October   2023  – October 2025 TPS2HCS10-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 Version A Package
    2. 5.2 Pinout - Version A
    3. 5.3 Version B Package
    4. 5.4 Pinout - Version B
  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 SPI Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 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 Protection Mechanisms
        1. 8.3.1.1 Overcurrent Protection
          1. 8.3.1.1.1 Inrush Period - Overcurrent Protection
          2. 8.3.1.1.2 Overcurrent Protection - Steady State Operation
          3. 8.3.1.1.3 Programmable Fuse Protection
          4. 8.3.1.1.4 Immediate Shutdown Overcurrent Protection (IOCP)
          5. 8.3.1.1.5 Auto Retry and Latch-Off Behavior
        2. 8.3.1.2 Thermal Shutdown
        3. 8.3.1.3 Reverse Battery
      2. 8.3.2 Diagnostic Mechanisms
        1. 8.3.2.1 Integrated ADC
        2. 8.3.2.2 Digital Current Sense Output
        3. 8.3.2.3 Output Voltage Measurement
        4. 8.3.2.4 MOSFET Temperature Measurement
        5. 8.3.2.5 Drain-to-Source Voltage (VDS) Measurement
        6. 8.3.2.6 VBB Voltage Measurement
        7. 8.3.2.7 VOUT Short-to-Battery and Open-Load
          1. 8.3.2.7.1 Measurement with Channel Output (FET) Enabled
          2. 8.3.2.7.2 Detection with Channel Output Disabled
      3. 8.3.3 Parallel Mode Operation
    4. 8.4 Device Functional Modes
      1. 8.4.1 State Diagram
      2. 8.4.2 Output Control
      3. 8.4.3 SPI Mode Operation
      4. 8.4.4 Fault Reporting
      5. 8.4.5 SLEEP
      6. 8.4.6 CONFIG/ACTIVE
      7. 8.4.7 LIMP_HOME State (Version A only)
      8. 8.4.8 Battery Supply Input (VBB) Under-Voltage
      9. 8.4.9 LOW POWER MODE (LPM) States
        1. 8.4.9.1 MANUAL_LPM State
        2. 8.4.9.2 AUTO_LPM State
    5. 8.5 TPS2HCS10-Q1 Registers
  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 Thermal Considerations
        2. 9.2.2.2 Configuring the Capacitive Charging Mode
      3. 9.2.3 Application Curve
    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 Third-Party Products Disclaimer
    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

8.1 Overview

The TPS2HCS10-Q1 device is a dual-channel smart high-side switch intended for use with 12V automotive batteries. The TPS2HCS10-Q1 device integrates SPI control and configuration as well digital readout with an ADC of key device and load diagnostics. The device incorporates all of the specific features needed for a power distribution switch as well as the traditional protective and diganostic functions seen in high side switches for actuator drive applications.

Diagnostics features include a digital current, output voltage and FET temperature sense output that can be read over the SPI serial interface. The high-accuracy load current sense allows for diagnostics of complex loads. The output voltage sense and FET temperature sense fearures in the device enables diagnosis of the switch and load failures.

This device includes protection through thermal shutdown, overcurrent protection, transient withstand, and reverse battery operation. In addition, the device also includes an SPI-configurable wire-harness protection function through a defined fuse or time-current curve. The protection works in conjunction with an immediate switch-off overcurrent protection with an SPI-configurable threshold to fully protect against overload and short circuit faults.

The TPS2HCS10-Q1 device also integrates a low quiescent current mode where the device can provide currents in the 100s of mA range while consuming only micro-amps of current. The device automatically switches to the high-current mode on an increase in load current and provide a wake signal to the MCU. Further, the device includes a capacitive charging mode that reduces the peak current load on the supply. Together, the two features support power distribution switch to off-board ECU applications.

For more details on the diagnosis, power distribution and protection features, refer to the Feature Description and Application Information sections of the document.

The TPS2HCS10-Q1 is one device in a family of TI high side switches. For each device, the part number indicates elements of the device behavior. Figure 8-1 gives an example of the device nomenclature.

TPS2HCS10-Q1 Naming ConventionFigure 8-1 Naming Convention