SLVAEX0 October   2020 TPS1H000-Q1 , TPS1H100-Q1 , TPS1H200A-Q1 , TPS1HA08-Q1 , TPS1HB16-Q1 , TPS1HB50-Q1 , TPS2HB16-Q1 , TPS2HB50-Q1 , TPS4H000-Q1 , TPS4H160-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2Normal Operation Diagnostics
    1. 2.1 Configuring Diagnostics With SEL/SELx Pin
      1. 2.1.1 Diagnostics Select Pin: SEL1
      2. 2.1.2 Diagnostics Select Pin: SELx
    2. 2.2 Operating Current Measurements Using the SNS/CS Pin
      1. 2.2.1 Internal/External Factor: Load Current Through Device
      2. 2.2.2 External Factor: Analog-to-Digital Converter (ADC)
      3. 2.2.3 External Factor: Probe Ground Termination
      4. 2.2.4 External Factor: Component Tolerances
    3. 2.3 Device Temperature on the Sense (SNS) Pin
  5. 3Fault State Diagnostics
    1. 3.1 Fault Behavior Configurations: Latch/THER/Delay Pin
      1. 3.1.1 Latch Pin
      2. 3.1.2 THER Pin
      3. 3.1.3 Delay Pin
    2. 3.2 Open Load Fault
    3. 3.3 Short to Battery Fault
    4. 3.4 Thermal Shutdown
    5. 3.5 Loss of Ground or Power Supply
    6. 3.6 Summary
  6. 4References

2.1 Configuring Diagnostics With SEL/SELx Pin

For devices that have a configurable output pin for measuring either the operating load current or the device temperature, there are pins that need to be configured to the appropriate logic values to see the respective output. These are the Select High and Low pins (SEL, SHE) or the Select 1 or Select 2 pins (SELx) pins. By pulling either of these pins to the pin’s high or low logic, the diagnostic output is configured to either the device temperature or the operating load current. Table 2-2 shows the different devices and their corresponding SEL/SELx pin.

Table 2-2 Devices With Select Pins
Feature Devices
SEL and SEH pin TPS4H160-Q1, TPS2H000-Q1, TPS4H000-Q1
SELx pins TPS1HA08-Q1, TPS1HB16-Q1, TPS1HB35-Q1, TPS1HB50-Q1, TPS2HB16-Q1, TPS2HB50-Q1