lecture20 - Lecture #20 OUTLINE The pn junction (contd)...

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Lecture 20, Slide 1 EECS40, Fall 2003 Prof. King Lecture #20 OUTLINE • The pn junction (cont’d) – reverse breakdown • Load line analysis method • Diode models • Diode applications Reference Reading Rabaey et al. (finish Chapter 3.2) – Chapter 6.4.1 - 6.4.2 Schwarz and Oldham (finish Chapter 13.2) Lecture 20, Slide 2 EECS40, Fall 2003 Prof. King pn-Junction Reverse Breakdown • As the reverse bias voltage increases, the peak electric field in the depletion region increases. When the electric field exceeds a critical value ( E crit 2x10 5 V/cm), the reverse current shows a dramatic increase: I D (A) V D (V) reverse (leakage) current forward current breakdown voltage V BD
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Lecture 20, Slide 3 EECS40, Fall 2003 Prof. King Circuit Analysis with a Nonlinear Element Since the pn junction is a nonlinear circuit element, its presence complicates circuit analysis. (Node and loop equations become transcendental.)
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lecture20 - Lecture #20 OUTLINE The pn junction (contd)...

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