SLVSGY2 October   2023 TPS2HCS10-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  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 SPI Timing Requirements
    7. 6.7 Switching 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 Programmable Fuse Protection
        2. 8.3.1.2 Thermal Shutdown
        3. 8.3.1.3 Overcurrent Protection And Capacitive Load Charging
        4. 8.3.1.4 Reverse Battery
      2. 8.3.2 Diagnostic Mechanisms
        1. 8.3.2.1 VOUT Short-to-Battery and Open-Load
          1. 8.3.2.1.1 Detection With Channel Output (FET) Enabled
          2. 8.3.2.1.2 Detection With Channel Output Disabled
        2. 8.3.2.2 Digital Current Sense Output
          1. 8.3.2.2.1 RSNS Value and Accuracy / Resolution of Current Measurement
            1. 8.3.2.2.1.1 High Accuracy Load Current Sense
            2. 8.3.2.2.1.2 SNS Output Filter
        3. 8.3.2.3 Output Voltage and FET Temperature Sensing
    4. 8.4 Device Functional Modes
      1. 8.4.1 State Diagram
      2. 8.4.2 SLEEP
      3. 8.4.3 CONFIG/ACTIVE
      4. 8.4.4 Battery Supply Input (VBB) Under-voltage
      5. 8.4.5 LOW POWER MODE (LPM) State
      6. 8.4.6 LIMP HOME state
      7. 8.4.7 SPI Mode Operation
    5. 8.5 TPS2HC10S 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. 9.3 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
      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. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape and Reel Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PWP|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.1.1 Programmable Fuse Protection

The device includes a programmable fuse protection, that is based on a defined time-current curve and is commonly referred to as I2t protection in melting fuse data sheets. The intent is to match the switch turnoff behavior of a melting fuse. There are two parameters that can be configured (for each channel) in the I2T_CONFIG_CH1 and I2T_CONFIG_CH2 registers - that sets the time-current curve. One, the nomimal current (NOM_CUR_CHx), is the current below which the device can supply current indefinitely without turn-off. This is roughly equivalent to the fuse current rating of the melting fuses. The second parameter, I2T_TRIP_CHx, is the integral energy value above which the switch is turned off. Other parameters that define the region are (1) the maximum current that is measurable (ISWCL_CHx) that is determined by the current sense ratio (KSNS) of the device and the resistor chosen on the sense pin and (2) the SWCL_DLY_TMR_CHx that sets the time after which the channel shutdown when the current exceeds ISWCL_CHx. The channel remains off for a period set by TCLDN_CHx bits before retrying. The device can be configured to latch-off (retry only on MCU re-enable of the channel) by setting the two-bit TCLDN_CHx to 00.

The operational region for the fuse-based shutdown is shown in the Figure 8-2 below. Exemplary values for the current values that bound the operational region is included.

GUID-20230920-SS0I-NFRN-NZLT-DN9R3LH5RP5J-low.svg Figure 8-2 Current Operational Region of Fuse Based Switchoff