pspice sem 3

8/11/2019 Pspice Sem 3

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How to work on Cadence

Pspice


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Steps for opening CadenceCIS

Click on start -programs -CapturThe OrCAD Capture window app


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1 Create a new pro!ect

" Select a suita#le director$ in thelocation #lock% Select a name for the pro!ect and tick

the Analog Or &i'ed Signal Circuit(i)ard and then click O*


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Select the re+uired Pspice li#raries ,with e'tension ol# and then Click .inis


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Schematicwindowappears


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Steps to #uild an$ circuit

Place all the components #$ using Place / Part and then drag the re+uired co

Schematic page


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Place all the components and then place ground


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Place ground fro0SO23C4 and tClick O*


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The 5alues of the 5arious components and the sources can #e changed #$ simon the 5alues and changing them accordingl$


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Simulating the circuit

1 Once the circuit is completed6 we proceed for simulation

" If it is simple circuit then onl$ #ias point anal$sis is performed

% Click on Pspice-7ew simulation Pro8le


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1 9i5e aname tothe newsimulation

" Clickcreate


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Simulating the circuit1 Simulation

settingswindow

opens

" Select

anal$sist$pe

% Select #iaspoint


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Simulating the circuit Click on

Pspice-run

The circuitwill #esimulated ifthere areno errors


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1 Click on:;< tosee the5oltageson the

5ariousnodes

" Click on:I< to seethecurrents

in the#ranches


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;iew outputs

1 In darkred arethe5oltagesat the

nodes" In light

red arethecurrents=owing in

the#ranches


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;iew outputs

1 Click onPspice /5iew output8le


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;iew outputs

1 The output 8le appears

" >ou can o#ser5e the results in the 8le also

.or other anal$sis t$pes?

1 If the anal$sis is time domain6 then select the time for whichsimulation is to #e done


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DC sweep

1 Select anal$sis t$pe DC Sweep


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DC sweep

1 The dc sweep window appears

" Select Primar$ sweep

% .ill the re+uired columns and then run


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DC sweep

1 4nter the re+uired 8elds and click ok" Then run Pspice% Simulation window appears


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DC sweep

1 Connect 5oltagele5el marker as shown at the re+uired node where 5oltage is to #e measured ,shown ingreen

" (e can also connect current marker at the terminals of an$ element in the circuit ,shown in red


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DC sweep results

1 On thesimulationwindow one5oltage isshown

" If current isalso to #eplotted weha5e to either

add plot towindow or add$-a'is


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DC sweep results

1 If we addplot6 thenwe o#ser5ethe currentand 5oltage

wa5eformson two plots


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DC sweep results

1 If weadd $-a'isthen wesee

#oth theplots onthesamegraph#ut with

di@erent$-a'es


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DC sweep results


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DC sweep ,secondar$

1 .ile / edit simulation pro8le

" Add primar$ sweep ,here 5a

% 4nter the necessar$ data corresponding to the primar$ sweepparameter ,here 5a


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1 addsecondar$sweep

" 4nter thenecessar$data

corresponding to thesecondar$sweepparameter,here 5#

% Add currentmarker atr1

Click ok andrun pspice

DC sweep ,secondar$

DC sweep ,secondar$


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1 (e o#ser5e three lines for current through 31 correspondingto 5#B 056 1105 and 105

DC sweep ,secondar$results

DC sweep ,parametric


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1 Primar$sweepparameter ;A

DC sweep ,parametricanal$sis



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1 secondar$ sweepparameter ;#



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1 Parametric anal$sissweepparameterIs

" Connectcurrentmarker at;# andrun pspice



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1 (e o#ser5ethere arenine plotscorresponding to %;#sweep5oltagesand % Issweepcurrents

DC sweep ,parametricanal$sis results


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Transient Anal$sis

1 Connect the circuit components

" Select anal$sis t$pe time domain ,transient


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Transient Anal$sis


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1 To o#tainthe5oltageacrossinductorTrace /add trace

Transient Anal$sis


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1 T$pe;,1?1-;,1?" inthe tracee'pression andthen pressO*

Transient Anal$sis


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1 >ou willo#ser5ethat theplot of5oltage

acrossinductorappears inthe window

Transient Anal$sis


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Transient Anal$sis

1 Draw the circuit

" Connect5oltagemarkers at theoutputs

% then editsimulationsettings

Select anal$sis/ anal$sis t$pe-Time domain,transient

E 4nter run totime 00us

F Click ok andrun


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Transient Anal$sis1 The plots

showunderdampedand criticall$dampedconditions

" G$ changing

the 5alues of3 6 and C6we canchange theamplifudes ofthe plots


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Transient Anal$sis

VV

R 4

6

L 4

2 mC 4

2 0 u

R 5

4

V 4

T D = 1 m

T F = 1 n

P W = 0 . 4 5 m

P E R = 1 m

V 1 = 0

T R = 1 n

V 2 = 0 . 5

0


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Transient Anal$sisI 1

I 1 = 0

I 2 = 2

T D 1 = 0

T C 1 = 0 . 5 m

T D 2 = 1 m

T C 2 = 0 . 5 m

R 7

1

C 5

0 . 5

0

L 6

3 H V

R 6

1

I

I

L 5

2 H

AC Anal$sis


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AC Anal$sis

C 6

2 0 u

V 6

1 V a c

0 . 1 V d c

L 7

2 m H

R 8

5

R

4

V

0

I

AC Anal$sis


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AC Anal$sis

1 The simulation window

appears" Click on Trace / then add

trace% (indow appears T$pe in Trace e'pressionE DG,;,1?";,C1?1

L 1

5 m H

C 1

1 0 nR 1

2 !

0

V 12 0 V a c

0 V d c


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AC Anal$sis

1 The followinggraphappears

" The graph isin DG,deci#els6

which showsthemagnitude

% 7ow addtrace andt$pe in thetracee'pressionP,;,1?";,C1?1 andthen press ok


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AC Anal$sis

1 The P stands forphase

" (e ha5e plottedthephase of output5oltage wrt the

phase of the input5oltage

pspice sem 3

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