资料介绍
AN247 / OFF LINE一个25W反激式开关稳压器
APPLICATION NOTE
A 25W OFF-LINE FLYBACK SWITCHING REGULATOR
INTRODUCTION across C2 reaches a level of 16 V the output of IC1
is enabled, turning on power MOS Q1.
This note describes a low cost switching power sup-
ply for applications requiring multiple output volt- During the on time of Q1, energy is stored in the air
ages, e.g. personal computers, instruments, etc... gap of transformer (inductor) T1. At this time the po-
The discontinuous mode flyback regulator used in larity of the output windings is such that all output
this application provides good voltage track