Category | October

Increasing the Efficiency of Power Factor Correction (PFC) Boost Inductors

Posted on 26 September 2012

      Switching to litz wire, reducing the turns, and reducing the gap size have significant impact For the past few decades, power supply efficiency has increased steadily. The materials improvements in semiconductor and magnetics materials have reduced their respective losses. As Energy Star and similar standards have gained acceptance, they’ve spurred the improvement [...]

PowerTrench® MOSFET with Shielded Gate Technology

Posted on 26 September 2012

      Device meets major requirements for synchronous rectification Higher system efficiency and power density in modern data and telecommunication power systems are core focus since making a small and high efficiency power system means saving space and energy bills in the places. By Won-suk Choi, Dong-wook Kim and Dong-kook Son, Fairchild Korea Semiconductor, [...]

Power Modules Featuring a Split Output

Posted on 26 September 2012

      Having proven its merits in DC/DC converters Customers want smaller, even more affordable devices, compelling manufacturers to conserve installation space and cut costs. To do both, engineers have to come up with new designs that combine technologies in unprecedented ways. By Patrick Baginski, Field Application Engineer, Vincotech GmbH The trend tendency towards [...]

Using Bidirectional Power Supply to Modulate Voltage on the Output

Posted on 26 September 2012

      Special technical requirements for switch mode power supplies are pushing to the limits of their performance, requiring a well optimized topology like the latest telecom RF power amplifiers, are well optimized. By Milan Marjanovic and Roberto Scibilia, Texas Instruments The key to increasing efficiency is envelope tracking or, “envelope of envelope tracking”, [...]

High Reliability for 1200V High Voltage Integrated Circuit for Half Bridge Applications

Posted on 26 September 2012

      Reduce the IC’s supply current for about 50% This article presents a high reliability 1200V High Voltage Integrated Circuit (1200V HVIC) for half bridge driver applications. It is suitable to drive Power MOSFET/IGBT module in industrial inverter systems. The pin configurations and the functions are compatible with the previous 1200V HVIC, where [...]