VIPER318XDTR datasheet(28/40 Pages) STMICROELECTRONICS

Part #	VIPER318XDTR

Description	Energy saving offline high voltage converter

PDF	40 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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28 / 40 page

5.2

Energy saving performances

The VIPer31 allows the design of applications compliant with the most stringent energy saving regulations. In

order to show the typical performances achievable, the active mode average efficiency and the efficiency at

10% of the rated output power of a single output flyback converter using VIPer31 have been measured and are

reported in Table 9. In addition, Figures 52 and 53 show no-load and light load consumptions.

Table 9. Power supply efficiency, VOUT = 15 V

Parameter

VIN

10% output load

efficiency [%]

Active mode average

efficiency [%]

Pin @ no-load

[mW]

Flyback iso, 15V/1.2A

115 VAC

83.2

85.9

26.0

230 VAC

77.4

86.6

29.7

Figure 42. PIN versus VIN in no-load, VOUT = 15V

100

150

200

250

300

VIN [VAC]

VIPER31

Energy saving performances

DS13285 - Rev 3

page 28/40

VIPER318XDTR Datasheet(PDF) 28 Page - STMicroelectronics