Description

The second generation TOPSwitch™-II family is more cost

effective and provides several enhancements over the first

generation TOPSwitch family. The TOPSwitch-II family

extends the power range from 100W to 150W for 100/115/

230 VAC input and from 50W to 90W for 85-265 VAC universal

input. This brings TOPSwitch technology advantages

to many new applications, i.e. TV, Monitor, Audio amplifiers,

etc. Many significant circuit enhancements that reduce the

sensitivity to board layout and line transients now make the

design even easier. The standard 8L PDIP package option

reduces cost in lower power, high efficiency applications.

The internal lead frame of this package uses six of its pins to

transfer heat from the chip directly to the board, eliminating

the cost of a heat sink. TOPSwitch incorporates all functions

necessary for a switched mode control system into a three

terminal monolithic IC: power MOSFET, PWM controller, high

voltage start up circuit, loop compensation and fault protection

circuitry.