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qiushidaren Community Member Offline I am a lovely MOSFET! Posts: 86 Chengdu	How does this kind of double gate MOSFET work? Jun 23^rd, 2010, 7:01am Hi gurus, I wonder how does this kind of MOSFET work, which has an unusual gate structure? Can it be equivalent to any normal MOSFET structure, and what is its purpose by doing so? Thank you in advance. -Terry
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pancho_hideboo

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Re: How does this kind of double gate MOSFET work?
Reply #1 - Jun 23^rd, 2010, 7:11am

qiushidaren wrote on Jun 23^rd, 2010, 7:01am:

I wonder how does this kind of MOSFET work, which has an unusual gate structure?

This is a very common dual-gate MOSFET.

qiushidaren wrote on Jun 23^rd, 2010, 7:01am:

Can it be equivalent to any normal MOSFET structure, and what is its purpose by doing so?

It is equivalent to "Cascode Connected MOSFET".

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http://www7.plala.or.jp/ungeromeppa/flash/kita.html
http://www.youtube.com/watch?v=mjIxGh55bMM&feature=related

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qiushidaren Community Member Offline I am a lovely MOSFET! Posts: 86 Chengdu	Re: How does this kind of double gate MOSFET work? Reply #2 - Jun 23^rd, 2010, 7:48am Hi pancho_hideboo, Could you please explain why this structure can be equivalent to cascode transistors, i can't figure it out, thank you. -Terry
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pancho_hideboo

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Re: How does this kind of double gate MOSFET work?
Reply #3 - Jun 23^rd, 2010, 7:59am

qiushidaren wrote on Jun 23^rd, 2010, 7:48am:

Could you please explain why this structure can be equivalent to cascode transistors,
i can't figure it out.

You can easily understand such things if you read any text book for beginner surely.
http://docs-asia.origin.electrocomponents.com/webdocs/0819/0900766b8081988d.pdf

Simple series connected two MOSFET.

S1-G1-(D1=S2)-G2-D2 �--->> �S1-G1-G2-D2

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« Last Edit: Jun 23^rd, 2010, 8:48pm by pancho_hideboo »

Kita━━━━━━(ﾟ∀ﾟ)━━━━━━ !!!!!
http://www7.plala.or.jp/ungeromeppa/flash/kita.html
http://www.youtube.com/watch?v=mjIxGh55bMM&feature=related

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qiushidaren

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Re: How does this kind of double gate MOSFET work?
Reply #4 - Jun 23^rd, 2010, 8:15pm

Sorry, I just misread it yesterday, it is really simply, and thank you for not being bored by this kind of question.
pancho_hideboo wrote on Jun 23^rd, 2010, 7:59am:

qiushidaren wrote on Jun 23^rd, 2010, 7:48am:

Could you please explain why this structure can be equivalent to cascode transistors,
i can't figure it out.

You can easily understand such things if you read any text book for beginner surely.
http://docs-asia.origin.electrocomponents.com/webdocs/0819/0900766b8081988d.pdf

Simple series connected two MOSFET.

S1-G1-(D1=S1)-G2-D2 �--->> �S1-G1-G2-D2

Back to top

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pancho_hideboo Senior Fellow Offline Posts: 1424 Real Homeless	Re: How does this kind of double gate MOSFET work? Reply #5 - Jun 24^th, 2010, 5:44am qiushidaren wrote on Jun 23^rd, 2010, 8:15pm: thank you for not being bored　by this kind of question. Did you think so ? I was very bored by your question which is always too easy.
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August West Community Member Offline I'll get up and fly away Posts: 71	Re: How does this kind of double gate MOSFET work? Reply #6 - Jun 24^th, 2010, 11:35am Pancho, You are really very rude. August
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