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©rlc L16-07Mar20111 PiN Diode PiN: N a >> N int (= N - ) & N int << N d W i = Intrinsic region (metall.) width E m,P-T = Peak field mag. when x n = W i V bi = i = V t ln(N a N d /n i 2 ) V bi,int = i,int = V t ln(N a N int /n i 2 ) V HL = V t ln(N d /N int ), the offset at N + N - V bi = V bi,int + V HL V PT = applied voltage when x n = W i
©rlc L16-07Mar20112 PiN Diode Depletion Fields Normalized Position, x = x/Wi Normalized Field, E/E m,P-T x p x n xnxn -x p
©rlc L16-07Mar20113 PiN Diode Depletion Conditions
©rlc L16-07Mar20114 CV data and N(x) calculation
©rlc L16-07Mar20115 Diode Switching Consider the charging and discharging of a Pn diode –(N a > N d ) –W d << Lp –For t < 0, apply the Thevenin pair V F and R F, so that in steady state I F = (V F - V a )/R F, V F >> V a, so current source –For t > 0, apply V R and R R I R = (V R + V a )/R R, V R >> V a, so current source
©rlc L16-07Mar20116 Diode switching (cont.) + + VFVF VRVR D R RFRF Sw R: t > 0 F: t < 0 V F,V R >> V a
©rlc L16-07Mar20117 Diode charge for t < 0 xnxn x nc x pnpn p no
©rlc L16-07Mar20118 Diode charge for t >>> 0 (long times) xnxn x nc x pnpn p no
©rlc L16-07Mar20119 Equation summary
©rlc L16-07Mar Snapshot for t barely > 0 xnxn x nc x pnpn p no Total charge removed, Q dis =I R t
©rlc L16-07Mar I(t) for diode switching IDID t IFIF -I R tsts t s +t rr I R
©rlc L16-07Mar References 1 Semiconductor Device Modeling with SPICE, 2nd ed., by Massobrio and Antognetti, McGraw Hill, NY, **OrCAD Pspice A/D Reference Guide, Copyright 1999, OrCAD, Inc. ***MicroSim OnLine Manual, MicroSim Corporation, 1996.
©rlc L10-16Feb20111 Ideal Junction Theory Assumptions E x = 0 in the chg neutral reg. (CNR) MB statistics are applicable Neglect gen/rec in depl reg (DR)
For(int i = 1; i <= 3; i++) System.out.println(i); iSaída na tela.
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2010 EOS/ESD Symposium A Study on the Application of On- Chip EOS/ESD Full-Protection Device for TMR Heads Ray Nicanor M. Tag-at, Lloyd Henry Li Hitachi.
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NAMITEC Colloquium Campinas Analysis and design of CMOS analog building blocks1 Analysis and Design of CMOS Analog Building Blocks Márcio Cherem.
+ DIFFERENCES BY GENDER IN METHODS FOR SUICIDE F. Stephen Bridges, Ed.D. and Karla A. Caillouet, M.S. Department of Health, Leisure, and Exercise Science.
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