07.Application Note AN-45 LinkSwitch-CV Family Design Guide

The LinkSwitch-CV family is a highly integrated monolithic switching IC designed for off-line power supplies up to 17 W. Ideally suited for DVD player and Set-top box applications, LinkSwitch-CV provides constant voltage without using an optocoupler or secondary feedback circuitry. ON/OFF control optimizes effi ciency across load and line, while meeting no-load and power supply effi ciency standards.
Application Note AN-45

LinkSwitch-CV Family
Design Guide


Introduction
<70 mW with a low cost bias circuit. This simplies meeting
The LinkSwitch-CV family is a highly integrated monolithic harmonized energy efciency standards.
switching IC designed for off-line power supplies up to 17 W.
Ideally suited for DVD player and Set-top box applications,
Basic Circuit Conguration
LinkSwitch-CV provides constant voltage without using an The circuit shown in Figure 1 shows the basic conguration of a
optocoupler or