AN2864

Testing the board

Doc ID 15282 Rev 1

19/29

Figure 18.

criteria for standard models and the blue line the criteria for low voltage models.

The power supply presented here belongs to the low voltage power supply category and in

than 68.2%. For all the considered input voltages the efficiency (see Table 8), the results are

higher than the recommended value.

3.4

Light load performance

The input power of the converter is measured in no load conditions for different input

voltages. The results are reported in Table 12.

supply when it is not loaded is also taken into account. Table 13 reports the criteria for

compliance.

0.1

1

10

100

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

st Pno

()

lv Pno

()

Pno

Table 12.

No load input power

90

13.50

115

13.70

230

21.20

265

25.00

Table 13.

Energy consumption criteria for no load

Maximum power in no load for AC-DC EPS

0 to = 50 W

< 0.3 W

> 50 watts < 250 W

< 0.5 W