Description

TOPSwitch-GXuses the same proven topology as TOPSwitch, cost effectively integrating the high voltage power MOSFET, PWM control, fault protection and other control circuitry on to a single CMOS chip. Many new functions are integrated to reduce system cost and improve design flexibility, performance and energy efficiency.

Product Highlights

Lower System Cost, High Design Flexibility

•  Extended power range for higher power applications

•  No heatsink required up to 34 W using P package

•  Features eliminate or reduce cost of external components

•  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 (DC_MAX) reduction rejects line ripple and limits DC_MAX

at high line

•  Frequency jittering reduces EMI and EMI filtering costs

•  Regulates to zero load without dummy loading

•  132 kHz frequency reduces transformer/power supply size

•  Half frequency option in Y/R/F packages for video applications

•  Hysteretic thermal shutdown for automatic fault recovery

•  Large thermal hysteresis prevents PC board overheating