Linear Power MOSFETs App Note - IXYS Corporation

Linear Power MOSFETs Basic and ApplicationsAbdus Sattar, Vladimir Tsukanov, IXYS CorporationIXAN0068 Applications like electronic loads, Linear regulators or Class A amplifiers operate in thelinear region of the Power MOSFET, which requires high Power dissipation capabilityand extended Forward Bias Safe Operating Area (FBSOA) characteristics. Such modeofoperation differs from the usualway of using Power MOSFET,inwhichit functions likean on-off switch in switched-mode applications. In Linear mode,thePower MOSFET issubjected to high thermal stress due tothe simultaneous occurrenceofhigh drain voltageand currentresulting in high Power dissipation. When the thermo-electrical stress exceedssome critical limit, thermalhot spots occur in the silicon causing the device to fail[1].

Linear Power MOSFETS Basic and Applications Abdus Sattar, Vladimir Tsukanov, IXYS Corporation IXAN0068 The FBSOA is a datasheet figure of merit that defines the maximum allowed operating

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  Notes, Linear, Power, Mosfets, Linear power mosfets app note

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