EVL150W-ADP-SR 查看數據表（PDF） - STMicroelectronics

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EVL150W-ADP-SR

12 V - 150 W resonant converter with synchronous rectification using the L6563H, L6599A, and SRK2000

STMicroelectronics 

Efficiency measurement

AN3233

Light load operation efficiency

Measurement results are reported in Table 2 and plotted in Figure 4. As can be seen,

efficiency is better than 50 % even for very light loads such as 500 mW.

Table 2. Light load efficiency

230 V - 50 Hz

115 V - 60 Hz

Test Vout Iout Pout Pin

Eff. Vout Iout Pout Pin

Eff.

[V] [mA] [W] [W] [%] [V] [mA] [W] [W] [%]

0.25 W 12.12 20.84 0.253 0.581 43.5 % 12.12 20.84 0.253 0.565 44.7 %

0.5 W 12.12 41.34 0.501 0.931 53.8 % 12.12 41.34 0.501 0.912 55.0 %

1.0 W 12.12 82.65 1.002 1.553 64.5 % 12.12 82.65 1.002 1.552 64.5 %

1.5 W

2.0 W

12.12 123.93 1.502 2.203 68.2 % 12.12 123.93 1.502 2.211 67.9 %

12.12 164.93 1.999 2.797 71.5 % 12.12 164.93 1.999 2.828 70.7 %

2.5 W 12.12 206.75 2.506 3.392 73.9 % 12.12 206.75 2.506 3.439 72.9 %

3.0 W 12.11 248.00 3.003 3.979 75.5 % 12.11 248.00 3.003 4.040 74.3 %

3.5 W 12.11 288.25 3.491 4.560 76.6 % 12.11 288.25 3.491 4.644 75.2 %

4.0 W

4.5 W

12.11 330.06 3.997 5.155 77.5 % 12.11 330.06 3.997 5.258 76.0 %

12.11 372.31 4.509 5.748 78.4 % 12.11 372.31 4.509 5.874 76.8 %

5.0 W 12.11 413.34 5.006 6.327 79.1 % 12.11 413.34 5.006 6.474 77.3 %

Figure 4. Light load efficiency diagram

80%

75%

70%

65%

60%

230V-50Hz

55%

115V-60Hz

50%

45%

40%

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

Pout [W]

12/35

Doc ID 17595 Rev 1

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