SLUU408A February   2010  – January 2022 TPS51125A

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Schematic
  5. 4Test Setup and Results
    1. 4.1 Test Setup
    2. 4.2 Test Procedure
    3. 4.3 Start-Up Performance
  6. 5Configuration
    1. 5.1 Switching Frequency Selection
    2. 5.2 Operation Mode Selection
    3. 5.3 VCLK ON/OFF Selection
  7. 6Physical Layouts
  8. 7List of Materials
  9. 8References
  10. 9Revision History

4.2 Test Procedure

  1. Ensure the switches SW1 (ENTRIP1), SW2 (ENTRIP2), and SW3 (EN0) are in the “OFF” position.
  2. Ensure the shunt jumper for JP1 is set to 5-pin to 6-pin (Med1), and the shunt jumper for JP2 is set 3-pin to 4-pin (Auto-skip).
  3. Apply appropriate VBAT voltage to VBAT and VBAT_GND terminals.
  4. Turn on SW3 (EN0), and both VREG5 (5V-LDO) and VREG3 (3.3V-LDO) start up.
  5. When SW3 stays on, VREF (2V-REF) is enabled.
  6. When SW3 stays on and turn on SW1 (ENTRIP1), CH1-output starts up.
  7. When SW3 stays on and turn on SW2 (ENTRIP2), CH2-output starts up.