Standby

AN1513

6/13

2

Standby

The first test performed is the measure of the power consumption during standby operation

mode as the main target of this application is consumption lower than 1 W. For better

accuracy, because the power level is very low, the power supply has been tested with a dc

voltage source.

Figure 1.

Electrical schematic

Table 2.

Standby measurements at 65 mA on output 1

Efficiency

Switching

frequency

Vdc

mA

Vdc

Vdc

W

W

%

KHz

276

3.33

6.51

16.6

0.42

0.92

46

BURST

325

3.02

6.51

17.5

0.42

0.98

43

BURST

374

2.67

6.51

18.2

0.42

1.0

42

BURST