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.