Designing in MOSFETs for safe and reliable gate-drive operation
The MOSFET gate-source threshold voltage (VGS-th) and maximum gate-source voltage(VGS-max) are key parameters that are critical to the reliable operation of MOSFETs. The threshold voltage represents the voltage at which the MOSFET starts to turn on, whilst the maximum gate-source voltage is the maximum gate-source voltage that the MOSFET can withstand safely. VGS-max ratings vary between suppliers and between MOSFETs, which can make it difficult to choose appropriate MOSFETs for the application. This application note aims to provide the designer with enough knowledge to appreciate these differences and to select an appropriate MOSFET. We also present a new methodology demonstrating where higher VGS-max rating voltages may be applied for Nexperia’sautomotive grade MOSFETs.
Designing in MOSFETs for safe and reliable gate-drive operation – [PDF]
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