AN826 250W催功率电视要素的供给

AN826 250W催功率电视要素的供给

APPLICATION NOTE


250W HIGH POWER FACTOR SUPPLY FOR TV

INTRODUCTION (only Fly-Back Section)
Minimum Output Power Synchronised : 8.5 W
This application has been designed to provide a
complete supply for colour TV. The system has Others: Short Circuit, Overload and Open Load
been configured using a Flyback DC-DC con- Protection.
verter with an upstream PFC section in order to
improve the characteristics of the whole supply.
The architecture of the system consists of a DESCRIPTION.
L4981A controller with the relevant circuitry for How to use the demoboa