TIDT408A December   2024  – May 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Dimensions
    4. 1.4 Test Setup
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Voltage Regulation
    3. 2.3 No Load Power Consumption
    4. 2.4 Efficiency Data
    5. 2.5 Thermal Images
    6. 2.6 EMI
  7. 3Waveforms
    1. 3.1 Start-Up and Shut Down Waveforms
    2. 3.2 Voltage Transition
    3. 3.3 Switching Waveform
      1. 3.3.1 Voltage Stress at Normal Operation
      2. 3.3.2 Voltage Stress at Start-Up
      3. 3.3.3 VCC Self-Bias Voltage
      4. 3.3.4 X Cap Discharge
    4. 3.4 Ripple and Noise
    5. 3.5 Load Transients
    6. 3.6 Overcurrent Protection
    7. 3.7 Short-Circuit Protection
    8. 3.8 Overvoltage Protection at AC-DC Output

2.5 Thermal Images

Thermal tests were performed at room temperature, open frame, with 30-minute warm up.

Table 2-7 shows single port full load thermal test results.

Table 2-7 Single Port, 20V, Full Load Thermal Test Result at Room Temperature 25oC
Temperature(°C) Test Condition
Components 90VAC 264VAC
AC

Bridge

 102 73
UCG28826 85 89
Transformer 78 79
Synchronous Rectifier MOSFET 82 81
Snubber 100 98
TPS56837HA 86 85
DCDC Buck Inductor 70 69
PMP41117 90VAC, Single Port, 20V, Full Load, PCB Bottom SideFigure 2-13 90VAC, Single Port, 20V, Full Load, PCB Bottom Side
PMP41117 264VAC, Single Port, 20V, Full Load, PCB Bottom SideFigure 2-15 264VAC, Single Port, 20V, Full Load, PCB Bottom Side
PMP41117 90VAC, Single Port, 20V, Full Load, DCDC BoardFigure 2-14 90VAC, Single Port, 20V, Full Load, DCDC Board
PMP41117 264VAC, Single Port, 20V, Full Load, DCDC BoardFigure 2-16 264VAC, Single Port, 20V, Full Load, DCDC Board

Table 2-8 details the dual port full load thermal test results.

Table 2-8 Dual Port Full Load Thermal Test Results
Temperature(°C) Thermal Test at 45W+20W, Port 1: 15V, 3A, Port2: 9V, 2.25A

Components

 90VAC 264VAC
AC Bridge 106 75
UCG28826 88 91

Transformer

 79 76
Synchronous Rectifier MOSFET 89 87
Snubber 103 100
TPS56837HA_45W 94 91
DCDC Buck Inductor_45W 74 73
TPS56837HA_20W 92 89
DCDC Buck Inductor_20W 75 72

Figure 2-17 through Figure 2-21 show the dual port full load thermal test results with 45W+20W power profile thermal images.

PMP41117 90VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, PCB Bottom SideFigure 2-17 90VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, PCB Bottom Side
PMP41117 264VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, PCB Bottom SideFigure 2-19 264VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, PCB Bottom Side
PMP41117 90VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, PCB Bottom SideFigure 2-21 90VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, PCB Bottom Side
PMP41117 90VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, DCDC BoardFigure 2-18 90VAC, Dual Port, 45W (15V, 3A) +20W (9V, 2.25A), Full Load, DCDC Board
PMP41117 264VAC, Dual Port, 45W (15V, 3A) +20W (9V,2.25A), Full Load, DCDC BoardFigure 2-20 264VAC, Dual Port, 45W (15V, 3A) +20W (9V,2.25A), Full Load, DCDC Board