AN1736 Datasheet, PDF (1/20 Pages) STMicroelectronics – This is an off-line wide range VIPer22A dual outputs power supply

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
● Meets EN55022 class B EMI specification
● Meets Blue Angel
Operating conditions
Parameter
Input voltage range
Input Frequency Range
Output voltages
Output current
Output power
Efficiency
Line regulation
Load regulation
Output ripple voltage
EMI
Limits
90 to 264Vac
50/60 Hz
V1= 5V; V2=12V
I=0.84A
10W
75% typical
+/- 0% for 5V output
+/- 0.3% for 5V output
20mVpp
EN55022 Class B
July 2006
Rev 4
1/20
www.st.com