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B GIO DC V O TOTRNG I HC GIAO THNG VN TI - C S II

BI TP MN HC: TIN HC K THUT

TI: THIT K MCH IN BNG PHN MMORCAD

GVHD : TH.S V THIN LNHSVTH : NGUYN DUY MULP : KTVT- K50NHM : 14

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Bo co orcad GVHD:Th.s v Thin Lnh

BI

V s mch in mch ngun da trn s nguyn l sau:

Yu cu : v c mch nguyn l, t v c mch in. Nm vng kin thc cbn v orcad. Lm m hnh linh kin thc t t boar ng..Kt qu : trnh by trn word cc bc tin hnh .

NGUYN DUY MU trang 2

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Bo co orcad GVHD:Th.s v Thin Lnh

Mt s linh kin chnh trong mch

IC n p 7805 a in p ra +5V IC n p 7812 a in p ra +12V

IC n p 7905 in p ra -5V IC n p 7912 a in p ra -12V

1 2 3

NGUYN DUY MU trang 3

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Bo co orcad GVHD:Th.s v Thin Lnh

PHN MT:V S NGUYN L CA MCH khi ng phn mm orcad tin hnh thc hin nh sau:Vo StartProgrameOrcad Family Release9.2Capture

Khi thc hin xong cc bc trn mn hnh orcad s xut hin:

NGUYN DUY MU trang 4

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Bo co orcad GVHD:Th.s v Thin Lnh

Trn mn hnh Orcad Capture tin hnh chn File NewProject.

lc ny mn hnh s xut hin hp thoi New project. Ti khung New project nhpchn muc PC Board Wizard. Ti khung Name nhp tn cn t cho mch in. ti

khung Location l ng dn m s mch c lu

NGUYN DUY MU trang 5

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Bo co orcad GVHD:Th.s v Thin Lnh

Khi ta v chng trnh s to ra rt nhiu file con b tr nn tt nht ta nn to ringcho mi mch mt folder bng cch nhp chut vo Browse.. th select directory xuthin

Chon Create dir... th Create directory xut hin ta vit tn folder mi vo y richn OK

NGUYN DUY MU trang 6

Nhp tn chomch

V tr lus mch

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Bo co orcad GVHD:Th.s v Thin Lnh

Sau khi nhn OK. Hp thoai PCB Project Wizard xut hin.Nhn Next tip tc.

Nu s dng quen th vin ca Orcad ta s bit tt c nhng linh kin trn nm trongcc mc Connector, Discrete, Counter, MiscLinear. V th ta nhp chn nhng mc

NGUYN DUY MU trang 7

Vittnmchvoy

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Bo co orcad GVHD:Th.s v Thin Lnh

ny ri nhn chut vo nt Add ln lt tng mc mt trn hp thoi PCB ProjectWizard.Ta c nh hnh sau:

Nhn Finish kt thc vic chn th mc cha linh kin cn cho v mch

Theo s nguyn l ta cn phi ly

1Cu DIODE9 T IN phn cc1 BIN TR1 IN TR1 IC LM 3171 IC 79121 IC 79051 IC 78121 IC78051 LED

1 DIODE15 tip mt , chn cm CON2 v CON3

Trn thanh cng c bn phi nhp chut vo v tr

NGUYN DUY MU trang 8

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Bo co orcad GVHD:Th.s v Thin Lnh

Trn mn hnh s xut hin ca s

NGUYN DUY MU trang 9

Ly linh kin

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Bo co orcad GVHD:Th.s v Thin Lnh

Nu th vin cn thiu ta nhp chut vo Add library... th mi xut hin ta ly th vinno th nhp chut vo ri bm OK

Khi th vin ta ly linh kin bng cch vit tn linh kin vo Place Part

NGUYN DUY MU trang 10

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Bo co orcad GVHD:Th.s v Thin Lnh

Sau nhn ok. Linh kin c ly ra c trong trang v mch. Ly s lng vmch.mun ngng vic ly linh kin hin ti th nhp chut phi End more hoc nhnEsc t bn phm.Lm tng t vy ta c c linh kin cn cho mch v :

NGUYN DUY MU trang 11

Nhp tn hoc k tu tin ca linh kin

NgunCON2

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Bo co orcad GVHD:Th.s v Thin Lnh

Tng t vi cc linh kin khc :

NGUYN DUY MU trang 12

T phn cc c

n led

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Bo co orcad GVHD:Th.s v Thin Lnh

c nh vy ta chn cc linh kin :

ly in tr ta g ch R2 vo v tr Part, Sau nhp chut vo ok bn phi ca s.

NGUYN DUY MU trang 13

Cu diode

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Bo co orcad GVHD:Th.s v Thin Lnh

ly bin tr ta g RESISTORVAR sau ta chn dng RESISTORVAR/DISCRETEri nhp ok

Ly tip mt cho mch ta nhp chut vo v tr GND ca thanh cng c bn phi khi trn mn hnh s xut hin ca s, ta chn 0/SOURCE ri nhn ok

ly IC LM 317 ta g LM317 vo v tr PART sau nhp ok

NGUYN DUY MU trang 14

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Bo co orcad GVHD:Th.s v Thin Lnh

ly IC7912 ta g UA7912 vo v tr PART sau nhp ok

ly IC7905 ta g UA7905 vo v tr PART sau nhp ok

NGUYN DUY MU trang 15

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Bo co orcad GVHD:Th.s v Thin Lnh

ly IC 7805 ti v tr PART ta g UA7805 sau nhp ok

ly IC7812 ti v tr PART ta g UA7812 sau nhp ok

NGUYN DUY MU trang 16

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Bo co orcad GVHD:Th.s v Thin Lnh

Khi chn xong cc linh kin trn trang thit k.

NGUYN DUY MU trang 17

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Bo co orcad GVHD:Th.s v Thin Lnh

Vo place wire trn thanh linh kin , sau thc hin ni bng cch nhp chut vo chnlinh kin th nht (im u) v di con tr ti chn linh kin th hai m ta cn ni vnhp chut vo (im cui)

C nh vy ta sp xp linh kin cho hp l ri ni cc chn li vi nhau c s honchnh .

NGUYN DUY MU trang 18

imu

im

cui

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Bo co orcad GVHD:Th.s v Thin Lnh

kim tra li cho s nguyn l v chuyn sang s mch in nhp chut vo biutng Minimize gc phi pha trn mnhnh:

Mn hnh xut hin, ti khung bn tri nhp vo FAGE1, ri sau nhp vo biu tngDRC trn thanh cng c kim tra li.

NGUYN DUY MU trang 19

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Bo co orcad GVHD:Th.s v Thin Lnh

Hp thoi DRC xut hin, nhp p vo Ok tin hnh kim tra nu khng thy bo lig l mch khng c li.

Tip tc to tp tin c ui .mnl thit k mch in nhp vo tools ri chn create netlist.

NGUYN DUY MU trang 20

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Bo co orcad GVHD:Th.s v Thin Lnh

Hp th create netlist xut hin chn layout ri chn OK.

Ta c th thay i v tr lu file .MLN bng cch nhp chut vo Browse ri chn mtth mc khc

NGUYN DUY MU trang 21

ng dn lufile .MNL

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Bo co orcad GVHD:Th.s v Thin Lnh

PHN HAI:V BOARD BNG LAYOUT PLUS

Chn start -> all programs -> chn orcad -> layout plus

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Bo co orcad GVHD:Th.s v Thin Lnh

Khi ng layout plus xong ta chon file -> new m 1 file mi

Hp thoi load template file xut hin , ti mc file name chn ti ng dnC:\Program Files\Orcad\Layout_Plus\Data\DEFAULT.TCH ri nhp p vo open

NGUYN DUY MU trang 23

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Bo co orcad GVHD:Th.s v Thin Lnh

Hp thoi load netlist source xut hin nhp chn ti folder c cha file .MNL ri nhpvo open

Hp th save file as xut hin, nhn nt save

NGUYN DUY MU trang 24

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Bo co orcad GVHD:Th.s v Thin Lnh

Lin kt n footprintKhi cc linh kin trong mch thit k cha tng lin kt n th vin footprint calayout ln no , hoc l linh kin mi th chng trnh s yu cu ta phi lin kt nfootprint (to chn linh kin trn board mch)

NGUYN DUY MU trang 25

CLICKCHUT

VO CHNCHN

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Bo co orcad GVHD:Th.s v Thin Lnh

Mt s chn th vin thng dngTo : cha cc linh kin 3 chn vi kch thc hnh dng khc nhauJumper :cha cc linh kin 2 chn vi kch thc hnh dng khc nhauDIP :chn linh kin ca cc loi chp

Saukhi chn chn cho linh kin ta s c c nh hnh di

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Bo co orcad GVHD:Th.s v Thin Lnh

To li v n v oTrn thanh cng c chn Options > chn System setting..

Th System Settings xut hin Dipsplay Units l cc n v o ta chn cino th nhp chut vo . Grids l thng s to li gip ta sp xp linh

kin cho d hn c th chn nh hnh di ri bm Ok

NGUYN DUY MU trang 27

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Bo co orcad GVHD:Th.s v Thin Lnh

Xa cc dy niClick chut vo Reconnect Mode trn thanh cng c. Dy ni cc chn linh kin s n i

Di chuyn linh kin

Dng chut nhp vo linh kin r chng n v tr hp l, mun xoay linh kin th dngphm R, ta nn da vo s nguyn l sp xp linh kin cho hp l khi ta vchng trnh c th v ht cc dy .

NGUYN DUY MU trang 28

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Bo co orcad GVHD:Th.s v Thin Lnh

Sau khi sp xp xong ta kim tra bng cch click vo Design rule check trn thanh cngc.

Chn lp mch in Trn thanh cng c click vo view spreadsheet -> layer.

NGUYN DUY MU trang 29

Check li

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Bo co orcad GVHD:Th.s v Thin Lnh

Ca s layer xut hin , v mt lp th chn Top l Routing , cn BOTTOM , INNER1,INNER2, click chut phi chn properties...

Ca s mi hin ra chn Unused Routing, ri chn Ok

NGUYN DUY MU trang 30

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Bo co orcad GVHD:Th.s v Thin Lnh

Chn kch thc ng mch inVo View spreadsheet trn thanh cng c chn Nets , ca s Nets xut hin click chutvo Width Min Con Max, click chut tri chn propeties , ca s Edit net xut hin in

kch thc ng mch vo cc mc Min Width (dy nh nht ) Con Width (dy trungbnh ) Max Width (dy ln nht ) .th Net Spacing l khong cch gia cc dy sau nhn Ok v ng hp thoi

NGUYN DUY MU trang 31

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Bo co orcad GVHD:Th.s v Thin Lnh

V khung mch inChn Obstacle tool trn thanh cng c chn v tr thch hp , click chut tri v v khung

in , sau khi v xong , click phi chn End comand kt thc

V mch in t ng

chn Auto -> Autoroute -> Board

NGUYN DUY MU trang 32

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Bo co orcad GVHD:Th.s v Thin Lnh

i cho chng trnh v xong l c

Nu mch xut hin dy mu vng nh hnh di ngha l khng th i dy ht m phini tt hoc phi xp li linh kin

Sp xp li chn linh kinTrn thanh cng c click Auto ->unroute -> Board khi phc li

NGUYN DUY MU trang 33

Phi nitt hocxp lichn

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Bo co orcad GVHD:Th.s v Thin Lnh

Trn thanh cng c click vo Component tool ri xp li linh kin, spxp xong ta chn Auto -> Autoroute -> Board chng trnh v li mch

Nhng ch khng th v dy t ng ta c th v th cng bng cch click vo EditSegment Mode i li dy

NGUYN DUY MU trang 34

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Bo co orcad GVHD:Th.s v Thin Lnh

Sau khi c boar mch va ta s in mch va v ra giy in bng . ta click vo Optionstrn thanh cng c, chn Post Process Setting ...

Th post process xut hin chn *.BOT , sau click chut phi chn Preview

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Bo co orcad GVHD:Th.s v Thin Lnh

Click vo file chn print/plot...

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Bo co orcad GVHD:Th.s v Thin Lnh

Th print /plot hin ra ta . in en trng th chn Force Black $ White , ri chn OK

Ta c th in lun ra giy bng , nu khng c my in c th xut file ra ui .pdf bngphn mm ring