TIDT438 March   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
    5. 1.5 Software Setup
  6. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
  7. 3Waveforms
    1. 3.1 Switching

2.2 Efficiency Data

Efficiency data in discharging mode is shown in Table 2-1.

Table 2-1 Efficiency Data in Discharging Mode With 52Vin
VIN (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) EFFICIENCY (%)

51.74

9.2

476.008

400

1.166

466.4

97.98

51.63

14.06

725.918

400

1.79

716

98.63

51.45

22.39

1151.97

400

2.835

1134

98.44

51.47

29.18

1501.89

400

3.682

1472.8

98.06

51.25

43.89

2249.36

400

5.48

2192

97.45

51.01

54.61

2785.66

400

6.737

2694.8

96.74

50.92

61.03

3107.65

400

7.512

3004.8

96.69
Table 2-2 Efficiency Data in Discharging Mode With 40Vin
VIN (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) EFFICIENCY (%)

39.66

13.78

546.515

400

1.342

536.8

98.22

39.55

18.16

718.228

400

1.76

704

98.02

39.35

28.65

1127.38

400

2.761

1104.4

97.96

39.23

36.51

1432.29

400

3.502

1400.8

97.8

38.98

55

2143.9

400

5.206

2082.4

97.13

38.83

71.23

2765.86

400

6.646

2658.4

96.11

38.05

80

3044

400

7.271

2908.4

95.55

Efficiency data in charging mode is shown in Table 2-3.

Table 2-3 Efficiency Data in Charging Mode With 40Vo
VIN (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) EFFICIENCY (%)

399.58

1.4248

569.322

40.148

13.961

560.506

98.45

399.56

1.6772

670.142

40.179

16.43

660.141

98.51

399.52

2.5236

1008.23

40.276

24.627

991.877

98.38

399.45

3.4858

1392.4

40.392

33.826

1366.3

98.13

399.35

4.5722

1825.91

40.514

44.035

1784.03

97.71
Table 2-4 Efficiency Data in Charging Mode With 52Vo
VIN (V) IIN (A) PIN (W)

VOUT (V)

 IOUT (A) POUT (W) EFFICIENCY (%)

399.79

1.417

566.502

52.095

10.422

542.934

95.84

399.64

1.7835

712.758

52.077

13.255

690.281

96.85

399.67

2.5302

1011.25

52.149

18.846

982.8

97.19

399.63

3.5205

1406.9

52.281

26.123

1365.74

97.07

399.56

4.523

1807.21

52.288

33.41

1746.94

96.67

During charging mode, the voltage stress on low voltage side is close to the FET drain to source rated voltage when load is over half load. Thus the efficiency is only tested below half load.