July 2006

Rev 4

1/20

AN1736

Application note

VIPower: VIPer22A dual output reference

board 90 to 264 VAC input, 10W output

Introduction

This is an off-line wide range VIPer22A dual outputs power supply at a switching frequency

of 60kHz and is set up for secondary regulation with an optocoupler. One output delivers 5V

at 1A and while a second output delivers12V at 0.42A, making up the total output power of

10W.

●

Switch mode general purpose power supply

●

Single-sided board

●

75% efficiency

●

Output short circuit protection

●

Thermal shutdown protection

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Meets EN55022 class B EMI specification

●

Meets Blue Angel

Operating conditions

Parameter

Limits

Input voltage range

90 to 264Vac

Input Frequency Range

50/60 Hz

Output voltages

V1= 5V; V2=12V

Output current

I=0.84A

Output power

10W

Efficiency

75% typical

Line regulation

+/- 0% for 5V output

Load regulation

+/- 0.3% for 5V output

Output ripple voltage

20mVpp

EMI

EN55022 Class B

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