PCB tsim nyob rau hauv layout ntawm kev paub
Niaj hnub no, PCB tsim cov kev xav tau rau kev teeb tsa tau nce zuj zus, kev teeb tsa qhov pib txiav txim siab dav dav thiab cov qauv ntawm cov xaim, kev faib hluav taws xob thiab cov dav hlau hauv av, nrog rau kev tswj cov suab nrov thiab EMI, thiab yog li kev ua haujlwm ntawm PCB tsim nyob ntawm. mus rau qhov loj ntawm seb qhov layout puas tsim nyog.
Cov kws ua haujlwm siv sijhawm ntau thiab siv zog ntawm qhov layout, pre-layout - ua ntej simulation - tom qab ntawd layout - optimization, cov txheej txheem no suav txog kwv yees li 50 feem pua ntawm tag nrho lub sijhawm tsim qauv.
Hauv qab no yog cov ntsiab lus ntawm PCB tsim cov lus qhia rau koj.
1, kev tsim hluav taws xob tiag tiag los txiav txim siab ntau yam teeb meem, xws li cov cua sov dissipation, cov khoom siv kho tshuab thiab kev tso kawm ntawm qee qhov tshwj xeeb circuits.
2, cov txheej txheem ntawm thawj zaug kom nkag siab txog qhov system Circuit Court schematic, yuav tsum tau muab faib rau hauv txhua lub voj voog digital, analogue, cov khoom sib xyaw digital / analogue, thiab xyuam xim rau qhov chaw ntawm txhua lub zog IC nti thiab cov teeb liab pins.
3, raws li qhov kev faib ua feem ntawm txhua feem ntawm lub Circuit Court, thawj zaug faib cov digital circuits, analogue circuits ntawm PCB thaiv cheeb tsam, kom cov khoom siv digital, cov khoom siv analogue thiab lawv cov xov hlau sib txuas kom deb li deb tau thiab txwv rau lawv cov kev sib txuas. cheeb tsam. Tom qab cov cheeb tsam tau muab faib, cov khoom tuaj yeem muab tso rau, qhov kev txiav txim dav dav yog cov khoom siv hybrid - analogue Cheebtsam - cov khoom siv digital - bypass capacitors.
4, cov khoom siv digital-analogue sib xyaw yuav tsum tau muab tso rau ntawm qhov sib txuas ntawm thaj chaw digital teeb liab thiab thaj chaw teeb liab analog, thiab xyuam xim rau cov teeb liab digital thiab analogue teeb liab pins ntawm lawv qhov chaw txuas; Cov ntshiab digital lossis analogue Cheebtsam yuav tsum muab tso rau hauv lawv cov kev cai; Crystal circuits yuav tsum nyob ze li sai tau rau lawv qhov chaw tsav tsheb.
5, cov khoom siv suab nrov yuav tsum tau khaws cia kom deb ntawm cov teeb liab hluav taws xob ntau zaus, thiab tib lub sijhawm, cov teeb liab xws li qhov siv hluav taws xob siv Uref, uas muaj suab nrov dua, yuav tsum tau ceev kom deb ntawm cov khoom uas ua rau siab. suab nrov.
6, cov khoom siv digital feem ntau yog muab tso rau hauv nruab nrab raws li qhov ua tau, uas tuaj yeem txo qhov ntev ntawm cov kab thiab txo cov suab nrov. Bypass capacitors yuav tsum tau muab tso rau ze li sai tau rau cov nti fais fab mov pins; tshwj xeeb tshaj yog muaj zaus capacitors, muaj peev xwm loj capacitors tuaj yeem muab tso rau ze ntawm lub zog mov interface kom lub zog mov ruaj khov thiab txo kev cuam tshuam los ntawm cov suab nrov tsawg.
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