TIDT338 july   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Considerations
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
  7. 3Waveforms
    1. 3.1 Start-Up
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Control Loop Stability

Description

This reference design is a power module that converts 4.5 V to 15 V to dual 6-A outputs at 1.8 V and 1.2 V. The design uses a highly-integrated TPSM5D1806 buck power module with a second stage pi filter to minimize output voltage ripple to less than 5 mV. Three configurations for the 1.8-V output rail are evaluated in this test report. Configuration A is fully populated and produces the lowest output ripple. Configuration B has the minimum filtering components to achieve less than 5-mV output ripple. Configuration C has further had the second stage pi filter removed to demonstrate the impact on the output ripple.