TIDT381 March   2024

 

  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 Considerations
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Load Voltage Regulation
    3. 2.3 Efficiency Data
    4. 2.4 Thermal Images
    5. 2.5 Bode Plots
  7. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence
    5. 3.5 Power-Down Sequence
    6. 3.6 PoE-to-Adapter Transient

2.3 Efficiency Data

Efficiency and power telemetry data is shown in the following tables.

Table 2-1 Efficiency Data
POE Input Voltage (V)PoE Input Current (A)DC/DC Input Voltage (V)Output Voltage (V)Output Current (A)PoE EfficiencyDC/DC Efficiency

48

0.078

47.630

23.898

0.000

0.0%

0.0%

48

0.325

47.500

23.883

0.500

76.5%

77.4%

48

0.579

47.444

23.867

1.000

85.9%

86.9%

48

0.842

47.318

23.851

1.500

88.5%

89.8%

48

1.098

47.228

23.835

2.000

90.4%

91.9%

48

1.362

47.180

23.820

2.500

91.1%

92.7%

48

1.630

47.113

23.804

3.000

91.3%

93.0%

Table 2-2 Telemetry Table
Output Current (A)DC/DC Input Voltage by Telemetry (Hex)DC/DC Input Voltage by Telemetry (V)Shunt Voltage by Telemetry (Hex)Current by Telemetry (A)Telemetry Compares to Measured Input CurrentTelemetry Compares to Measured DC/DC Input Voltage

0.000

3B92

47.66

0096

0.075

-3.85%

+0.06%

0.500

3B96

47.67

0290

0.328

+0.92%

+0.36%

1.000

3B56

47.47

0495

0.587

+1.30%

+0.05%

1.500

3B2E

47.34

06A4

0.850

+0.95%

+0.05%

2.000

3B10

47.25

08B8

1.116

+1.64%

+0.05%

2.500

3B00

47.20

0AD9

1.389

+1.95%

+0.04%

3.000

3AE9

47.13

0CF6

1.659

+1.78%

+0.03%