TIDT291 June   2022

 

  1.   Description
  2.   Features
  3.   Applications
  4. 1Test Prerequisites
    1. 1.1 Voltage and Current Requirements
    2. 1.2 Required Equipment
  5. 2Testing and Results
    1. 2.1 Efficiency Graphs
    2. 2.2 Efficiency Data
    3. 2.3 Thermal Images
    4. 2.4 Bode Plots
  6. 3Waveforms
    1. 3.1 Switching
    2. 3.2 Output Voltage Ripple
    3. 3.3 Load Transients
    4. 3.4 Start-Up Sequence

Efficiency Data

Efficiency data is shown in the following tables.

Table 2-1 Flyback 10-V Input Efficiency
Vin_sys (V) Vin_dc/dc (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Eff (%) Loss (W)

10.06

10.04

0.34

3.37

24.11

0.12

2.89

85.76%

0.48

9.99

9.96

0.67

6.65

24.11

0.24

5.83

87.68%

0.82

10.09

10.05

0.98

9.89

24.11

0.36

8.70

88.02%

1.18

10.03

9.97

1.32

13.14

24.11

0.48

11.59

88.24%

1.54

9.97

9.89

1.66

16.41

24.10

0.60

14.49

88.27%

1.93

10.07

9.97

1.97

19.69

24.10

0.72

17.38

88.26%

2.31

10.07

9.96

2.31

23.00

24.10

0.84

20.29

88.21%

2.71

10.00

9.87

2.66

26.29

24.09

0.96

23.18

88.16%

3.11

10.07

9.93

2.97

29.52

24.10

1.08

26.07

88.32%

3.45

9.99

9.81

3.34

32.76

24.05

1.20

28.91

88.25%

3.85

Table 2-2 Flyback 24-V Input Efficiency
Vin_sys (V) Vin_dc/dc (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Eff (%) Loss (W)

24.08

24.07

0.15

3.56

24.10

0.12

2.94

82.52%

0.62

24.05

24.04

0.28

6.83

24.10

0.24

5.88

86.13%

0.95

24.02

24.00

0.42

10.03

24.10

0.36

8.75

87.17%

1.29

24.00

23.97

0.55

13.21

24.10

0.48

11.59

87.74%

1.62

24.07

24.04

0.69

16.51

24.09

0.60

14.50

87.84%

2.01

24.04

24.01

0.82

19.76

24.09

0.72

17.42

88.17%

2.34

24.02

23.97

0.96

23.04

24.08

0.84

20.33

88.23%

2.71

23.99

23.94

1.10

26.26

24.07

0.96

23.21

88.37%

3.05

24.03

23.97

1.23

29.51

24.07

1.08

26.09

88.40%

3.42

24.00

23.94

1.37

32.73

24.06

1.20

28.94

88.43%

3.79

Table 2-3 Flyback 28.8-V Input Efficiency
Vin_sys (V) Vin_dc/dc (V) IIN (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Eff (%) Loss (W)

28.81

28.80

0.12

3.57

24.10

0.12

2.89

80.96%

0.68

28.78

28.77

0.24

6.82

24.09

0.24

5.83

85.50%

0.99

28.83

28.81

0.35

10.03

24.09

0.36

8.70

86.75%

1.33

28.81

28.78

0.46

13.24

24.09

0.48

11.59

87.52%

1.65

28.82

28.79

0.56

16.21

24.09

0.59

14.24

87.83%

1.97

28.80

28.76

0.69

19.70

24.09

0.72

17.37

88.15%

2.34

28.84

28.80

0.80

22.98

24.08

0.84

20.28

88.22%

2.71

28.82

28.78

0.91

26.21

24.06

0.96

23.15

88.31%

3.06

28.80

28.75

1.02

29.44

24.06

1.08

26.03

88.42%

3.41

28.81

28.75

1.14

32.66

24.05

1.20

28.90

88.49%

3.76

Table 2-4 Buck Efficiency
Vin_24V (V) Iin (A) PIN (W) VOUT (V) IOUT (A) POUT (W) Eff (%) Loss (W)

24.03

0.04

0.94

5.05

0.16

0.82

87.25%

0.12

24.02

0.08

1.90

5.03

0.32

1.61

85.08%

0.28

24.01

0.11

2.71

5.03

0.48

2.42

89.17%

0.29

24.00

0.15

3.55

5.03

0.64

3.23

91.05%

0.32

23.99

0.18

4.39

5.03

0.80

4.03

91.88%

0.36

23.98

0.22

5.23

5.03

0.96

4.84

92.63%

0.39

24.00

0.25

6.10

5.03

1.12

5.64

92.54%

0.45

23.99

0.29

6.96

5.03

1.28

6.45

92.72%

0.51

24.01

0.33

7.85

5.03

1.44

7.26

92.47%

0.59

24.00

0.37

8.88

5.03

1.63

8.20

92.39%

0.68