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Need help in OrCAD 9.2

samiran

I am desiging a buck converter in Orcad 9.2. I need to know certain things to go ahead. Please help. My queries are- 

 1. I am unable to use switch (I am very much familier with Cadence SPECTRE and there I use realy switches in AnalogLib) in Orcad Capture while creating the schematic. Please guide me.

 2. How can I use a PWM controller in Orcad. Do I need to plug in external librarires for that?

Please help me as soon as possible. I am doing this problem as part of my assignment. So I need to meet my goal before the deadline :)

 

Regards,

Sam

  • Alok Tripathi

    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} PSpice offers several type of switched. These can be found under "ANALOG" library. These parts are

    S, S_ST, W, W_ST. S are voltage controlled switches, W are current control switches.

    The exact issue you are facing is not clear from your post. The details for these parts can found in PSpice Reference guide,

    PSpice has several PWM models. Most of the models are present in Swit_reg libraries. You can also use the external models for PWM. Refer Appendix C: Importing SPICE models, in PSpice user guide on how to use external models in Capture-PSpice

    Hope this helps.

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