Applications

• DVD/STB

• Adapters

• Standby and auxiliary supplies

• Home appliances, white goods and consumer electronics

• Industrial controls

Description

The LinkSwitchTM-CV dramatically simplifies low power, constant voltage

(CV) converter design through a revolutionary control technique which

eliminates the need for both an optocoupler and secondary CV control

circuitry while providing very tight output voltage regulation. The

combination of proprietary IC trimming and E-Shield™ transformer

construction techniques enables Clampless™ designs with the

LinkSwitch-CV LNK623/4.

LinkSwitch-CV provides excellent cross-regulation for multiple-output

flyback applications such as DVDs and STBs. A 725 V power MOSFET

and ON/OFF control state machine, self-biasing, frequency jittering,

cycle-by-cycle current limit, and hysteretic thermal shutdown circuitry

are all incorporated onto one IC.