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Introduction to SPICE

Introduction to SPICE. Microelectronics (I). What is SPICE?. S imulation P rogram with I ntegrated C ircuit E mphasis SPICE was developed by U.C. Berkeley in 1970. There are many commercial SPICE programs, such as PSPICE, HSPICE, IS-SPICE, IG-SPICE,.etc. Create netlist. Graph Data

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Introduction to SPICE

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  1. Introduction to SPICE Microelectronics (I)

  2. What is SPICE? • Simulation Program with Integrated Circuit Emphasis • SPICE was developed by U.C. Berkeley in 1970. • There are many commercial SPICE programs, such as PSPICE, HSPICE, IS-SPICE, IG-SPICE,.etc.

  3. Create netlist Graph Data output Schematics PSPICE circuits editor Graph Tools (simulation) .sch .dat .cir .net .als PSPICE Data Flow

  4. 檔案說明

  5. description used part You can use hot-key : Ctrl+G

  6. 元件庫說明

  7. You can modify the component attribute by double click the part. Only parameter without ’ * ‘ can be modified. • You can change the component placement direction by hot-key Ctrl+R, or using the dialog “Change Display”.

  8. You can use “Ctrl+W” to draw wires. • Add label for wire -> select the wire then double click. • Select and delete.

  9. Basic Analysis • DC Analysis: 1. Bias point detail 2. DC sweep • Transient Analysis : transient • AC Analysis: AC sweep

  10. Bias point detail • Choose Analysis / setup • Choose Analysis / Simulate

  11. DC sweep 與更改變數的元件名稱相同。

  12. Marker ※測量電流的marker必須在元件端點。

  13. Transient Analysis Initial condition要記得設定。 (參數 IC = ** V)

  14. AC sweep • 電壓源必須要選擇VAC

  15. The Diode Model PSPICE9.1版元件庫中， 有四種二極體模型D1N4004、D1N4148、D1N750 、D1N914。 其中 D1N4148為 Si質二極體。 D1N750 為 Zener Diode。

  16. Diode 近似模型 平常我們在紙上分析電路時，不可能實際地考量diode的物理特性，所以介紹幾個常用的近似模型。 (1) 理想二極體模型 (Ideal Diode Model） (2) 定壓降模型 （Constant Voltage Drop Model） (3) 電池加電阻模型 （Battery Plus Resistance Model）

  17. Exercise 利用PSPICE畫出D1N4148二極體的I-V curve。

  18. 箝位電路（Clamping circuit）

  19. Vsin Parameter

  20. the voltage doubler Clamping circuit The Peak Rectifier (峰值整流器)

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