SLVT248 May   2026  – May 2026

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Functional Block Diagram
    3. 1.3 Pin Functions
    4. 1.4 Required Equipment
    5. 1.5 Dimensions
    6. 1.6 Test Setup
  7. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Voltage Regulation
    4. 2.4 Thermal Images
  8. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Short-Circuit Protection
    4. 3.4 Load Transients
    5. 3.5 Start-Up and Shutdown Sequence
    6. 3.6 Brown In and Brown Out
  9.   Trademarks

2.1 Efficiency Graphs

Efficiency was measured using a DC input source with three outputs loaded. Data was recorded at an input voltage of 127 VDC and 400 VDC. The 127 VDC represents the rectified voltage across the bulk capacitor for a 90 Vac input when the server PSU system is still in the start-up stage and the PFC pre-regulator is not yet active. In contrast, 400 VDC is the nominal bulk voltage after the PFC stage becomes operational.


PMP41184 Efficiency Graph

Figure 2-1 Efficiency Graph