Timeline for Why isn't a depletion region considered at the P-N junction of a MOSFET?
Current License: CC BY-SA 3.0
4 events
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| Nov 24, 2016 at 16:07 | comment | added | MAM | So Depletion Mode mosfets can simply be thought as enhancement mode mosfets that have been turned on for you to begin with. | |
| Nov 24, 2016 at 16:06 | comment | added | MAM | You should edit and make it a bit more clear what exactly you are asking.Enhancement mode and depletion mode mosfets behave the same way. The only difference is the presence or absence of a conducting channel "out of the box". Applying a positive bias to a depletion mode mosfet causes an even stronger inversion so the existing N channel becomes more N type thus more IDSS. The same applys to Enhancement types, you much first apply enough positive bias to create a channel, after that they will behave the same as the depletion types. | |
| Nov 24, 2016 at 15:27 | comment | added | Sumanth | My question was based on a depletion type MOSFET which confuses me. Even more confusing is that the depletion type MOSFET works in an 'Enhancement mode' on changing the bias. If I apply the same logic, reverse bias should further shrink the n-channel rather than make it wider. That's what I don't understand. | |
| Nov 24, 2016 at 11:21 | history | answered | MAM | CC BY-SA 3.0 |