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4/4

AN1620 APPLICATION NOTE

Table A. System efficiency.

Table B. System performance (Pout limited to 25W)

Vin (Vac)

Iout = 1A

Iout = 2A, Pout = 36W

Iout = 1.8A, Pout = 25W

Vout (V)

η

Vout (V)

η

Vout (V)

η

85

110

220

264

17.97

17.94

17.89

17.89

83.9%

85.1%

84.4%

82.0%

17.96

17.96

17.91

17.89

82.2%

83.7%

83.5%

83.0%

13.82

13.86

14.31

14.41

82.6%

83.7%

83.8%

82.7%

Line regulation

Vin = 85 to 264 Vac, Iout = 1A

80mV

Load regulation

Iout = 0.5 to 1.8A, Vin = 85V

Vin = 264V

10mV

10mV

Maximum efficiency

Vin = 180 Vac, Iout = 1.8A

85.2%

Output ripple

Vin = 85 to 264 Vac, Iout = 1.8A

< 200mV