VHF28-12Io5

TOPSwitch-FX Family

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

Line feed forward with maximum duty

cycle (DCmax) reduction rejects ripple

and limits DCmax at high line

Single resistor sets OV/UV thresholds, DCmax reduction

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 for video applications

Hysteresic thermal shutdown for automatic recovery

Large thermal hysteresis prevent PC board overheating

Standar package with omitted pins for large creepage

Active-on and active-off remote ON/OFF capability

Synchoronizable to a lower frequency

Semiconductors High Power Equipment Repair