DER-34

13W Integrated Digital TV PSU

April 1, 2004

Page 13 of 19

Power Integrations

Tel: +1 408 414 9660 Fax: +1 408 414 9760

www.powerint.com

8

Measurements

All measurements were performed in a lab ambient of 25˚C with the unit mounted

horizontally in free air.

8.1

Efficiency

Efficiency was measured at the full power condition specified in Table 1. Figure 5 shows

the results.

50

55

60

65

70

75

80

180

200

220

240

260

280

Input Voltage (Vac)

Figure 5 - Full Power Efficiency Variation with Input Voltage

8.2

Line Regulation

-4

-2

0

2

4

6

8

180

200

220

240

260

280

Figure 6 - Input Voltage (Vac)

2V5

3V3

5V

9V

32V