At the PCIM 2003 show in Nuremberg, Infineon Technologies showcased its new family of switched mode power supply power ICs, high-voltage power MOSFETs and IGBTs (insulated gate bipolar transistors), which allow the development of cost-effective and highly efficient power supplies. With low power consumption, high efficiency and extended functionalities, these semiconductors are predestined for use in state-of-the-art, sophisticated power supply designs, says Infineon.
State-of-the-art power supply applications are characterised by such criteria as further reduced power consumption and higher efficiency for less heat and low energy consumption and longer battery service lives. At the same time, the devices are expected to become ever smaller. For this reason, compact, reliable power components with high power density are required.
Infineon's new 500 V CoolMOS, F3 switched mode power supply power IC and HighSpeed2 IGBT families, now enable smaller, higher density and more efficient power supplies. Infineon's 500 V MOSFET product family in CoolMOS C3 technology has an area-specific resistance (RDSON x A) smaller by a factor of three than that of conventional MOSFETs, which reduces the power losses whilst increasing the efficiency of the application.
The company's third generation (F3) of its fixed frequency SMPS power driver ICs have extremely low power standby. They also offer a broad spectrum of additional protection and energy-saving functions such as 'Active' burst mode, an integrated starting current source, a protection circuit for short-term overloads, in addition to an extended error protection concept. Due to the burst mode and the starting source, the power consumption is reduced in standby mode to 100 mW, depending on application.
The new HighSpeed2 IGBTs present an inexpensive alternative for high-voltage MOSFETs (1000 V or higher). According to Infineon, their accommodation, in particularly space-saving packages (DPak), results in cost advantages of about 15% on system level. And, by using the HighSpeed2 IGBTs in switched mode power supplies, it is possible to increase the efficiency compared with linear/passive power supplies by up to 30%. The new IGBTs are suited for use in electronic lamp ballast, compact switched mode power supplies for industrial and consumer applications, as well as for line deflection circuits in CRT monitors.
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