Depletion Mosfet

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Depletion Mosfet

The Depletion MOSFETs are normally ON condition at zero Gate to Source Voltage. This means in normal condition it can conduct current. So this type of MOSFET is. Infineon is one of the few semiconductor manufacturers worldwide to offer N-channel depletion mode MOSFETs. Compared to enhancement mode transistors, known as normally-off, depletion MOSFETs are in an on-state at zero voltage of gate-to-source (V GS), normally-on. This makes N-channel depletion mode MOSFETs a perfect constant current source.

Enhancement Mode Mosfet

Mosfet
  1. Depletion MOSFETs, unlike enhancement MOSFETs, are in an on-state even at 0 V of gate-to-source voltage (V GS). This feature makes them suitable for using as a constant current source as well as in other ways. This application note explains how depletion MOSFETs can be used in different applications. Intended audience.
  2. Depletion mode MOSFETs, unlike regular enhancement type MOSFETs, require a negative gate bias to turn off.

Depletion Mosfet Application Note

Vishay is one of the world's foremost manufacturers of power MOSFETs. The Vishay Siliconix MOSFET product line includes a diverse range of advanced technologies in more than 30 package types, from the chipscale MICRO FOOT® and thermally advanced PowerPAK® families to the classic “TO” transistor outline. Single- and multi-die MOSFETs are available with integrated features such as Schottky body diodes and ESD protection, while our unique PowerPAIR® devices combine optimized combinations of MOSFETs for synchronous buck converters and other applications in a single package.
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Depletion Mosfet

Infineon is one of the few semiconductor manufacturers worldwide to offer N-channel depletion mode MOSFETs. Compared to enhancement mode transistors, known as normally-off, depletion MOSFETs are in an on-state at zero voltage of gate-to-source (VGS), normally-on. This makes N-channel depletion mode MOSFETs a perfect constant current source.

Depletion Mosfet

Areas of application include power supply startup power, over-voltage protection, in-rush-current limiter and off-line voltage reference. With one single component it is possible to realize a simple current regulator. All products are suitable for automotive applications. In order to meet special requirements, N-channel depletion mode MOSFETs are available with VGS(th) indicator on reel.