Power Integrations Introduces Five Offline Switcher ICs

The TOPSwitch-HX family is highly efficient from light load to full power, which benefits a wide range of applications where government regulations limit energy usage at all power levels. The traditional TO-220 power packages previously used for power devices stand 18 mm above the PCB and constrain the heatsink to a vertical aspect that often considerably exceeds this height. Power Integrations’ proprietary eSIP package features an ”L” shaped lead-bend enabling the devices to lie flat against the board with the exposed heatsink pad facing upwards. This leaves plenty of space for a heatsink and enables extremely slender power supply designs.

Comments Andrew Smith, product manager at Power Integrations: “TOPSwitch-HX features world-beating multi-mode technology that ensures maximum efficiency under all load conditions. Now that these ICs are available in the new low-profile eSIP-L package, power supply designers will be able to reduce size, save cost and still meet all required agency regulations.

Moreover, our proprietary high-frequency SlimCoreTM transformer technology - freely licensed to PI customers when they use TOPSwitch-HX in their adapter design - means that very low-profile solutions can be created quickly, easily and economically.”

The new eSIP-L package is designed to meet international standards for creepage and clearance, increasing reliability and improving resistance to contaminant-induced short-circuit failures. The new products, TOP255LN, TOP256LN, TOP257LN, TOP258LN and TOP259LN, join the previously released TOP260LN, TOP261LN and TOP262LN and are immediately available from $0.95/ea in 10k unit quantities.

Power Integrations’ Green Room web site (www.powerint.com/greenroom) contains information on the issue of energy waste from inefficient power supplies, as well as tips on designing products that minimize the amount of energy wasted by household and office electronics. The Green Room also provides a comprehensive guide to energy-efficiency standards around the world, as well as a host of reference designs and software to assist in the design of energy-efficient power supplies.