TOP255PN
IC, OFF-LINE SWITCHER, 35/50W,
Product Overview
TOPSwitch-HX family enhanced EcoSmart, integrated off-line switcher with advanced feature set and extended power range. TOPSwitch-HX cost effectively incorporates 700V power MOSFET, high voltage switched current source, PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device.
It is a highly integrated monolithic off-line switcher IC designed for off-line power supplies. TOPSwitch-HX integrated circuits enable design of power supplies , while providing high efficiency under all load conditions.
Also provides very good performance at low load and during standby (no load) operation.
TOPSwitch-HX allows designer to meet efficiency requirements for new energy efficiency standards.
Applications includes LCD monitor, personal computers, small servers, laptop adapters, set-top boxes, digital TVs, printers, DVD players and recorders, UPS, video games, broadband modems, cellular phone adapters and audio amplifiers.
It is a highly integrated monolithic off-line switcher IC designed for off-line power supplies. TOPSwitch-HX integrated circuits enable design of power supplies , while providing high efficiency under all load conditions.
Also provides very good performance at low load and during standby (no load) operation.
TOPSwitch-HX allows designer to meet efficiency requirements for new energy efficiency standards.
Applications includes LCD monitor, personal computers, small servers, laptop adapters, set-top boxes, digital TVs, printers, DVD players and recorders, UPS, video games, broadband modems, cellular phone adapters and audio amplifiers.
- 31W (adapter), 50W (openframe) at 230VAC 35W (openframe) at 85-265VAC O/P power
- Multi-mode operation maximizes efficiency at all loads, EcoSmart™- energy efficient
- Extended creepage between DRAIN and all other pins improves field reliability
- Frequency jittering reduces EMI filter cost, allows both primary and secondary sensing
- Line undervoltage (UV) detection prevents turn-off glitches
- Line overvoltage (OV) shutdown extends line surge limit
- Accurate programmable current limit, optimized line feed-forward for line ripple rejection
- 132KHz frequency (254Y-258Y and all E/L packages) reduces transformer and power supply size
- Half frequency option for video application, fully integrated soft-start for minimum start-up stress
- Output OVP is user programmable for latching/non-latching shutdown with fast AC reset
