AN4106 Datasheet, PDF (1/39 Pages) STMicroelectronics – This document describes a 12 V-1 A power supply

AN4106
Application note
EVLVIP26L-12WFN: 12 V/12 W, 60 kHz non-isolated flyback
By Mirko Sciortino
Introduction
This document describes a 12 V-1 A power supply set in non-isolated flyback topology with
the VIPER26, a new offline high-voltage converter by STMicroelectronics.
The features of the device include an 800 V avalanche rugged power section, PWM
operation at 60 kHz with frequency jittering for lower EMI, current limiting with adjustable set
point, onboard soft-start, a safe auto-restart after a fault condition and low standby power.
The available protection includes thermal shutdown with hysteresis, delayed overload
protection, and open loop failure protection. All protection is auto-restart mode.
Figure 1. EVLVIP26L-12WFN demonstration board
October 2012
EVLVIP26L-12WFN
Doc ID 023156 Rev 1
1/39
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