TOP221 TOPSwitch II Family Three terminal Off line PWM Switch
Miguel Maldonado
Niveau: Secondaire, Lycée, Terminale ® TOP221-227 TOPSwitch-II Family Three-terminal Off-line PWM Switch Figure 1. Typical Application. 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. Product Highlights • Lowest cost, lowest component count switcher solution • Cost competitive with linears above 5W • Very low AC/DC losses-up to 90% efficiency • Built-in Auto-restart and Current limiting • Latching Thermal shutdown for system level protection • Implements Buck, Boost, Flyback or Forward topology • Works with primary or opto feedback • Stable in discontinuous or continuous conduction mode • Source connected tab for low EMI • Ease of design, technical support material reduce time-to-market Description The second generation TOPSwitch-II family is more cost effective and provides several enhancements to 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.
- auto-restart
- switching
- control pins
- single voltage
- drain
- power supply
- current