UM0377 datasheet(10/11 Pages) STMICROELECTRONICS

Part #	UM0377

Description	This software offers a straightforward step-by-step procedure for designing

PDF	11 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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10 / 11 page

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UM0377

10/11

output regulation even if one main voltage cycle is missing. The value of NH will also have

an impact on the size of the input capacitor, which will be much bigger than the case where

NH = 0.

If the expected ripple across the Cin is 25-30% after one missing cycle, during normal

operation (no cycles missing) the input voltage ripple will be much less.

●

Output ripple:

The output ripple is the peak to peak amplitude of the output voltage of the converter. It

includes two frequency components: the main line frequency (fL) and the VIPer switching

frequency (fSW).

The output ripple depends on the equivalent series resistor (ESR) of the output capacitor

and on the power stage output current

Revision history

Table 1.

VIPer power capability (1)

See datasheet for further details

VIPer12AS-E

VIPer12ADIP-E

VIPer22AS-E

VIPer22ADIP-E

195-265 Vac

8 W

13 W

12 W

20 W

85-265 Vac

5 W

8 W

7 W

12 W

Table 2.

Revision history

Date

Revision

Changes

24-Jan-2007

First issue

28-Mar-2007

Minor text change

UM0377 Datasheet(PDF) 10 Page - STMicroelectronics

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