TIDT308 October   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
    3. 1.3 Considerations
    4. 1.4 Dimensions
    5. 1.5 Test Setup
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
      1. 2.3.1 Top Side
      2. 2.3.2 Bottom Side
    4. 2.4 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
      1. 3.1.1 Secondary Side
      2. 3.1.2 Primary Side
        1. 3.1.2.1 Transistor Q8 Drain-Source
        2. 3.1.2.2 HS2-Pin of U1
          1. 3.1.2.2.1 Undershoot
          2. 3.1.2.2.2 Overshoot
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence
      1. 3.4.1 Full Load
      2. 3.4.2 Zero Load
      3. 3.4.3 Overload
    5. 3.5 Shutdown Sequence

2.2 Efficiency Data

Efficiency data is shown in the following tables.

Table 2-1 Efficiency Data for 18-V Input Voltage
VIN (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Efficiency (%)
18.010 0.022 0.398 56.300 0.000 0 0.0%
18.010 0.242 4.357 56.300 0.050 2.815 64.61%
18.000 0.406 7.306 56.300 0.101 5.703 78.06%
18.050 0.723 13.050 56.290 0.200 11.281 86.44%
18.040 1.724 31.101 56.290 0.503 28.291 90.97%
18.018 3.327 59.946 56.210 1.007 56.603 94.42%
18.023 6.681 120.412 56.260 2.002 112.63 93.54%
18.030 8.384 151.164 56.250 2.501 140.68 93.07%
Table 2-2 Efficiency Data for 24-V Input Voltage
VIN (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Efficiency (%)
24.070 0.016 0.378 56.300 0.000 0 0.0%
24.040 0.205 4.938 56.300 0.051 2.866 58.04%
24.000 0.336 8.059 56.300 0.101 5.664 70.28%
24.000 0.567 13.603 56.290 0.200 11.264 82.80%
24.000 1.305 31.320 56.280 0.503 28.326 90.44%
24.080 2.559 61.621 56.260 1.004 56.491 91.67%
24.070 5.084 122.372 56.250 2.016 113.40 92.67%
24.070 6.343 152.676 56.240 2.506 140.94 92.31%
Table 2-3 Efficiency Data for 30-V Input Voltage
VIN (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Efficiency (%)
30.03 0.0170 0.511 56.25 0 0 0.0%
30.02 0.1817 5.455 56.26 0.0507 2.852 52.29%
30.02 0.3012 9.042 56.27 0.1004 5.650 62.48%
30.01 0.4733 14.204 56.27 0.2014 11.333 79.79%
30.05 1.0913 32.794 56.27 0.5035 28.332 86.39%
30.04 2.096 62.964 56.26 1.004 56.479 89.70%
30.01 4.130 123.941 56.24 2.014 113.27 91.39%
30.03 5.153 154.745 56.24 2.508 141.05 91.15%