AN1735 Datasheet, PDF (1/15 Pages) –

AN1735
Application note
VIPer22A Single Output Reference Board
90 to 264 VAC input, 10W output
Introduction
This Application Note deals with an off-line wide range single output power supply using a
VIPer22A off-line SMPS primary switcher manufactured by STMicroelectronics. The
VIPer22A combines a dedicated current mode PWM controller with a high voltage Power
MOSFET on the same silicon chip and its switching frequency is internally fixed at 60 kHz.
The feedback path of the power supply includes an optocoupler for secondary regulation
and galvanic isolation between primary and secondary sides. The output voltage is
regulated at 12V with a maximum output current of 0.84A, resulting in a maximum output
power of 10W.
Product highlights
– Switch mode General Purpose Power Supply
– Single-sided Board
– 75% Typical Efficiency
– Output Short Circuit Protection
– Thermal Shutdown Protection
– Complies with EN55022 Class B EMI specifications
– Complies with Blue Angel standards
July 2006
Rev 2
1/15
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