SLUUCS7 april   2023

 

  1.    TPSM843A26EVM 16-A, Regulator Evaluation Module
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Background
    2. 1.2 Before You Begin
    3. 1.3 Performance Characteristics Summary
  4. 2Configurations and Modifications
    1. 2.1 Output Voltage
    2. 2.2 Switching Frequency (FSEL Pin)
    3. 2.3 Current Limit, Soft-Start Time, and Internal Compensation (MSEL Pin)
    4. 2.4 Enable, UVLO (EN Pin)
  5. 3Test Setup and Results
    1. 3.1 Input and Output Connections
    2. 3.2 Efficiency
    3. 3.3 Output Voltage Regulation
    4. 3.4 Load Transient and Loop Response
    5. 3.5 Input Voltage Ripple
    6. 3.6 Start-up and Shutdown with EN
    7. 3.7 Start-up and Shutdown with VIN
    8. 3.8 Start-up Into Pre-Bias
    9. 3.9 Thermal Performance
  6. 4Board Layout
    1. 4.1 Layout
  7. 5Schematic and Bill of Materials
    1. 5.1 Schematic
    2. 5.2 Bill of Materials

2.3 Current Limit, Soft-Start Time, and Internal Compensation (MSEL Pin)

Jumper J5 can be used to select between the current limit, soft-start time, and internal compensation options shown in Table 2-3. If the desired option is not available, change one of the resistors to the value which sets the desired option.

Table 2-3 MODE Selection
JUMPER J5 SETTINGMODE RESISTORCURRENT LIMITSOFT-START TIMERAMP
1 to 2 pin shorted1.78 kΩHigh1 ms1 pF
3 to 4 pin shorted(1)4.87 kΩHigh2 ms2 pF
5 to 6 pin shorted11.3 kΩHigh2 ms4 pF
7 to 8 pin shorted14.3 kΩHigh4 ms4 pF
9 to 10 pin shorted60.4 kΩLow2 ms2 pF
(1) Default Setting