The second generation TOPSwitch-II family is more costeffective and provides several enhancements over the firstgeneration TOPSwitch family. The TOPSwitch-II family extendsthe power range from 100W to 150W for 100/115/230 VACinput and from 50W to 90W for 85-265 VAC universal input.This brings TOPSwitch technology advantages to many newapplications, i.e. TV, Monitor, Audio amplifiers, etc. Manysignificant circuit enhancements that reduce the sensitivity toboard layout and line transients now make the design even easier. The standard 8L PDIP package option reduces cost inlower power, high efficiency applications. The internal leadframe of this package uses six of its pins to transfer heat fromthe chip directly to the board, eliminating the cost of a heat sink.TOPSwitch incorporates all functions necessary for a switchedmode control system into a three terminal monolithic IC: powerMOSFET, PWM controller, high voltage start up circuit, loopcompensation and fault protection circuitry.
