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TOP242FN Key Features

  • Fully integrated soft-start for minimum stress/overshoot
  • Externally programmable accurate current limit
  • Wider duty cycle for more power, smaller input capacitor
  • Separate line sense and current limit pins on Y/R/F packages
  • Line under-voltage (UV) detection: no turn off glitches
  • Line overvoltage (OV) shutdown extends line surge limit
  • Line feed-forward with maximum duty cycle (DCMAX)
  • Frequency jittering reduces EMI and EMI filtering costs
  • Regulates to zero load without dummy loading
  • 132 kHz frequency reduces transformer/power supply size

Related Power Integrations Datasheets

Part Number Description
TOP242F Integrated Off-line Switcher
TOP242 Integrated Off-line Switcher
TOP242G Integrated Off-line Switcher
TOP242GN Integrated Off-line Switcher
TOP242P Integrated Off-line Switcher

TOP242FN Description

TOPSwitch-GX uses the same proven topology as TOPSwitch, cost effectively integrating the high voltage power MOSFET, PWM control, fault protection and other control circuitry onto a single CMOS chip. Many new functions are integrated to reduce system cost and improve design flexibility, performance and energy efficiency. Depending on package type, either 1 or 3 additional pins over the TOPSwitch standard DRAIN, SOURCE...

TOP242FN Applications

  • No heatsink required up to 34 W using P/G packages
  • Features eliminate or reduce cost of external ponents
  • Fully integrated soft-start for minimum stress/overshoot