AN2852 datasheet(17/35 Pages) STMICROELECTRONICS

Part #	AN2852

Description	This document describes the characteristics and performance of a 90 W wide range input

PDF	35 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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17 / 35 page

AN2852

Electrical performance

17/35

Electrical performance

3.1

Efficiency measurement and no-load consumption

Table 1 and 2 give the efficiency measurements taken at the two nominal voltages.

Table 1.

Efficiency at 115Vrms

Load [%]

Iout [A]

Vout [V]

Pout [W]

Pin [W]

Eff [%]

0.3746

12.12

4.54

6.80

66.77%

10%

0.7507

12.11

9.09

12.10

75.13%

20%

1.5037

12.10

18.19

21.9882.78%

25%

1.8787

12.09

22.71

26.83

84.66%

40%

3.0037

12.09

36.31

41.49

87.53%

50%

3.7537

12.08

45.34

51.41

88.20%

60%

4.5037

12.08

54.40

61.44

88.55%

75%

5.6287

12.07

67.94

76.67

88.61%

80%

6.0037

12.07

72.46

81.77

88.62%

100%

7.5037

12.06

90.49

102.4888.30%

Table 2.

Efficiency at 230Vrms

Load [%]

Iout [A]

Vout [V]

Pout [W]

Pin [W]

Eff [%]

0.3746

12.12

4.54

6.58

68.97%

10%

0.7507

12.11

9.09

12.41

73.26%

20%

1.5037

12.10

18.19

22.30

81.59%

25%

1.8787

12.09

22.71

27.02

84.06%

40%

3.0037

12.08

36.28

41.37

87.71%

50%

3.7537

12.08

45.34

51.05

88.82%

60%

4.5037

12.07

54.36

60.83

89.36%

75%

5.6287

12.07

67.94

75.60

89.87%

80%

6.0037

12.07

72.46

80.56

89.95%

100%

7.5037

12.06

90.49

100.55

90.00%

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