TOPSwitch-FX Series AC / DC Off Line Converters:

TOPSwitch-FX uses the proven TOPSwitch topology and cost effectively integrates many new functions that reduce system cost and, at the same time, improve design flexibility, performance and energy efficiency. Like TOPSwitch, the high-voltage power MOSFET, PWM control, fault protection and other control circuitry are all integrated onto a single CMOS chip, but with two added terminals.

• Features eliminate or reduce cost of external components
• Fully integrated soft-start for minimum stress/overshoot
• Externally settable accurate current limit
• Wider duty cycle for more power, smaller input capacitor
• Line under-voltage (UV) detection: no turn off glitches
• Line overvoltage (OV) shutdown extends line surge limit
• Frequency jittering reduces EMI and EMI filtering costs
• 132 kHz frequency reduces transformer/power supply size
• Hysteretic thermal shutdown for automatic recovery
• Applications: VCR, PC, DVD, monitor, TV, set-top box