A Revolution For Power Conversion Systems — CoolSiC MOSFET

Silicon carbide (SiC) transistors are increasingly used in power converters, placing high demands on the size, weight and/or efficiency. The outstanding material properties of SiC enable the design of fastswitching unipolar devices as opposed to bipolar IGBT devices. Thus, solutions which have been up to now possible in the low-voltage world only (< 600 V) are now possible at higher voltages... » read more

Power/Performance Bits: May 18

Efficient high-voltage power conversion Researchers from École Polytechnique Fédérale de Lausanne (EPFL) and Enkris Semiconductor are working to design new power transistors with the aim of improving power converter efficiency. "We see examples of electric power losses every day, such as when the charger of your laptop heats up," said Elison Matioli, head of EPFL's POWERlab, noting that ... » read more

Don’t Underestimate The Multiphase Buck Voltage Regulator

Step-down (buck) voltage regulators have long been the preferred DC-DC conversion electronic workhorse thanks to their inherently high efficiency. Only in buck mode the current is directed to the output during the entire cycle. The higher delivery of current to the output, per cycle, makes the buck converter the most efficient architecture. As one of many examples, modern microprocessors, from ... » read more