SLVSE42B October   2017  – September 2019 TPS27S100

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Typical Application Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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 Timing Requirements – Current Monitor Characteristics
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Accurate Current Monitor
      2. 7.3.2 Adjustable Current Limit
      3. 7.3.3 Inductive-Load Switching-Off Clamp
      4. 7.3.4 Full Protections and Diagnostics
        1. 7.3.4.1 Short-to-GND and Overload Detection
        2. 7.3.4.2 Open-Load Detection
        3. 7.3.4.3 Short-to-Supply Detection
        4. 7.3.4.4 Thermal Fault Detection
        5. 7.3.4.5 UVLO Protection
        6. 7.3.4.6 Loss of GND Protection
        7. 7.3.4.7 Reverse Current Protection
        8. 7.3.4.8 Protection for MCU I/Os
    4. 7.4 Device Functional Modes
      1. 7.4.1 Working Mode
  8. 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
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
      1. 10.2.1 Without a GND Network
      2. 10.2.2 With a GND Network
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.4 Full Protections and Diagnostics

Table 1 is when DIAG_EN enabled. When DIAG_EN is low, all the diagnostics is disabled accordingly. The output is in high-impedance mode. Refer to Table 2 for details.

Table 1. Fault Table

CONDITIONS IN OUT CRITERION FLT
(TPS27S100A)		 IMON
(TPS27S100B)		 FAULT RECOVERY
Normal L L H 0
H H H In linear region
Short to GND H L Current limit triggered. L VIMON(H) AUTO
Open load(1)
Short to supply
H H TPS27S100A: IOUT< I(ol,on)
TPS27S100B: Judged by users		 L Almost 0 AUTO
L H VIN – VOUT < V(ol,off) L VIMON(H) AUTO
Thermal shutdown H TSD triggered L VIMON(H) Recovery when TJ < T(SD,rst)or when EN toggles.
Thermal swing H TSW triggered L VIMON(H) AUTO
(1) Need external pull-up resistor during off-state

Table 2. DIAG_EN Logic Table

DIAG_EN EN PROTECTIONS AND DIAGNOSTICS
HIGH ON See Table 1
OFF See Table 1
LOW ON Diagnostics disabled, protection normal
IMON or FLT is high Impedance
OFF Diagnostics disabled, no protections
IMON or FLT is high impedance