Power Integrations today released two new standby power supply reference designs for its TOPSwitch-JX IC product family. The reference designs—the DER-246 and DER-247— target new demands by various regulatory bodies for increased power efficiency in designs ranging from television systems to air conditioners to motors.
Describes a supply for a similar application operating from 110 VDC to 400 VDC input and providing > 87% efficiency at 5 V, 10 W.
Global concern over increased power consumption by proliferating electronics devices has prompted regulatory and standards bodies to drive power efficiency and conservation measures. The European Union’s EuP Lot 6 standby rules, for example, call for consumer devices with standby input power of no more than 500mW. The unrelated 80 Plus program, involving U.S. utilities and energy efficiency organizations, requires—among other things—that power supplies must have a minimum efficiency of 80% when tested at each of the following three load conditions: 20%, 50% and 100% of rated power supply output.
Power Integrations’ applications engineer Paul Lacey hosts a 7-minute video overview of its TOPSwitch-JX family (below), composed of 16 power conversion ICs incorporating a 725 V power MOSFET for use in flyback power supplies.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.