LinkSwitch-4 Family
Energy-Efficient, Accurate Primary-Side Regulated CV/CC Switcher for Adapters and Chargers
Product Highlights
Dramatically Simplifies CV/CC Converters • Eliminates optocoupler and all secondary CV/CC control circuitry • Eliminates all control loop compensation circuitry
Advanced Performance Features • Dynamic base drive technology provides flexibility in choice of BJT
transistor by dynamically optimizing BJT switching characteristics • Extends RBSOA of BJT • Dramatically r.
CV/CC Switcher
LinkSwitch-4 Family
Energy-Efficient, Accurate Primary-Side Regulated CV/CC Switcher for Adapters and Chargers
Product Highlights
Dramatically Simplifies CV/CC Converters • Eliminates optocoupler and all secondary CV/CC control circuitry • Eliminates all control loop compensation circuitry
Advanced Performance Features • Dynamic base drive technology provides flexibility in choice of BJT
transistor by dynamically optimizing BJT switching characteristics • Extends RBSOA of BJT • Dramatically reduces sensitivity to BJT gain • Compensates for input line voltage variations • Compensates for cable voltage drop • Compensates for external component temperature variations • Very accurate IC parameter tolerances using proprietary trimming technology • Frequency up to 65 kHz to reduce transformer size • The minimum peak current is fixed to improve transient load response
Enhanced Performance Features • Easy start for starting into capacitive loads (LNK4114D, LNK4115D) • Constant power for high current start-up (LNK4214D, LNK4215D) • 13003 drive improved efficiency with 13003 BJT’s (LNK4302S,
LNK4322S)
Advanced Protection/Safety Features • Single fault output overvoltage and short-circuit • Over-temperature protection • Active clamp
EcoSmart™– Energy Efficient • Meets DoE 6 and CoC V5 2016 via an optimized quasi-resonant
switching PWM/PFM control • No-load consumption of <30 mW at 230 VAC input
Green Package • Halogen free and RoHS compliant package
Applications • Chargers for cell/.