Handout+6_Electrostatics+of+Junction+Capacitances

Handout+6_Electrostatics+of+Junction+Capacitances -...

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1 Copyright The course contents are protected under the copyright laws of the United States and other countries. This course is designated for personal use only and all intellectual property rights of such course contents are reserved by Knowledge Master, Inc. Any distributing, copying or public performance of such course contents, including PowerPoint slides, handout, video and audio sound-track, is Dr. Vincent Chang strictlyp rohibited and may subject theoffender to severe criminal penalties. (Title 17, United State Code, Section 501 & 506) Copyright © by Knowledge Master, Inc. Lecture Electrostatics of Dr. Vincent Chang Junction Capacitances
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2 Outline Centra Depletion Diffusion Central concepts • Zero-bias • Forward bias Reverse Depletion capacitance • Physical meaning • Derivation SPICE Diffusion capacitance • Physical meaning • Derivation Charge Dr. Vincent Chang • Reverse bias • SPICE modeling • Charge control equation Charge Neutrality of pn Junction N N = + N N = n D p A x N x N + = Dr. Vincent Chang n D p A x N x N = D D A A
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