LinkSwitch™-XT2 incorporates a 725 V / 900 V power MOSFET, oscillator, simple ON/OFF control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start-up and operating power are derived directly from the DRAIN pin, eliminating the need for a bias winding and associated circuitry.
Product Highlights
Easy to Design
Lowest component count switcher solution
Selectable device current limit
Fully integrated auto-restart for short-circuit and open-loop protection
Optional self-biased supply
Frequency jittering greatly reduces EMI
Meets HV creepage requirements between DRAIN and all other pins both on the PCB and at the package
Pin-out simplifies PCB heat sinking
Features Superior to Linear/RCC
Output overvoltage protection (OVP)
Input overvoltage line protection (OVL)
Hysteretic over-temperature protection (OTP)
Extended creepage between DRAIN pin and all other pins improves field reliability
725 V MOSFET rating for excellent surge withstand
900 V MOSFET rating series for industrial design or extra safety margin