SLUU340A February   2009  – January 2022 TPS51123

 

  1. 1Introduction
    1.     Trademarks
  2. 2Performance Specification Summary
  3. 3Schematic
  4. 4Test Setup and Results
    1. 4.1 Test Setup
    2. 4.2 Test Procedure
    3. 4.3 Start-Up Performance
    4. 4.4 Transient Performance
  5. 5Configuration
    1. 5.1 Switching Frequency Selection
    2. 5.2 Operation Mode Selection
  6. 6Physical Layouts
  7. 7List of Materials
  8. 8References
  9. 9Revision History

4.2 Test Procedure

  1. Ensure the switches SW4 (ENC) 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 shunt jumper for JP2 is set to 5-pin to 6-pin (auto-skip).
  3. Apply appropriate VBAT voltage to the 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 SW4 (ENC), CH1-output, and CH2-output start up.