- 30
- Sep
Momwe mungapangire masanjidwe a PCB a 4 layer
Momwe mungapangire 4-wosanjikiza PCB stack？In theory, there are three options.
Ndondomeko 1:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mapangidwe); L3 (wosanjikiza magetsi); BOT (wosanjikiza chizindikiro).
Pulogalamu 2:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (magetsi osanjikiza); L2 (wosanjikiza chizindikiro); L3 (Chizindikiro Chazizindikiro; BOT (pansi).
Dongosolo 3:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mphamvu yamagetsi); L3 (chingwe cholumikiza); BOT (wosanjikiza chizindikiro).
Chizindikiro chachizindikiro
Pansi
mphamvu
Chizindikiro chachizindikiro
Kodi ubwino ndi zovuta za njira zitatuzi ndi ziti?
Ndondomeko 1, chonyamulira chachikulu cha zigawo zinayi za kapangidwe ka PCB, pali nthaka pansi pa chigawochi, chizindikirocho ndichabwino kwambiri TOP wosanjikiza; Pazipangizo zosanjikiza, malangizidwe otsatirawa akulimbikitsidwa: Ma mbale oyimitsa mphamvu (GND mpaka MPHAMVU) sayenera kukhala ochepa kwambiri kuti achepetse kutayika kwa MPHAMVU ndi kukhazikika; Onetsetsani kuwonongeka kwa ndege.
Ndondomeko 2, kuti mukwaniritse zoteteza zina, magetsi ndi maziko amayikidwa pazigawo za TOP ndi BOTTOM. Komabe, pulogalamuyi iyenera kukwaniritsa zomwe mukufuna. Zowonongeka izi zilipo:
1, magetsi ndi nthaka zili kutali kwambiri. Ndege impedance ndi yayikulu kwambiri.
2, chifukwa chakukhudzidwa ndi pulogalamu yamagetsi, magetsi ndi kukhazikika sikokwanira. Chizindikiro cha siginidwe sichimatha chifukwa chazosakwanira kutanthauzira.
Mwachizoloŵezi, mphamvu ndi kukhazikika kwa yankho ndizovuta kuzigwiritsa ntchito ngati ndege yathunthu chifukwa chazida zambiri zomwe zili pamwamba. Zomwe zimatetezedwa ndizabwino kwambiri. Zovuta kukhazikitsa; Kugwiritsa ntchito kwake kuli ndi malire. Komabe, ndiyo njira yabwino kwambiri yosanjikiza pa bolodi limodzi.
Ndondomeko 3, yofanana ndi njira 1, imagwiritsidwa ntchito pomwe zida zazikulu zimayikidwa ndi BOTTOM kapena wiring signal wiring.
Mwachidziwitso, pali njira zitatu.
Ndondomeko 1:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mapangidwe); L3 (wosanjikiza magetsi); BOT (wosanjikiza chizindikiro).
Pulogalamu 2:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (magetsi osanjikiza); L2 (wosanjikiza chizindikiro); L3 (Chizindikiro Chazizindikiro; BOT (pansi).
Dongosolo 3:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mphamvu yamagetsi); L3 (chingwe cholumikiza); BOT (wosanjikiza chizindikiro).
Chizindikiro chachizindikiro
Pansi
mphamvu
Chizindikiro chachizindikiro
Kodi ubwino ndi zovuta za njira zitatuzi ndi ziti?
Ndondomeko 1, chonyamulira chachikulu cha zigawo zinayi za kapangidwe ka PCB, pali nthaka pansi pa chigawochi, chizindikirocho ndichabwino kwambiri TOP wosanjikiza; Pazipangizo zosanjikiza, malangizidwe otsatirawa akulimbikitsidwa: Ma mbale oyimitsa mphamvu (GND mpaka MPHAMVU) sayenera kukhala ochepa kwambiri kuti achepetse kutayika kwa MPHAMVU ndi kukhazikika; Onetsetsani kuwonongeka kwa ndege.
Ndondomeko 2, kuti mukwaniritse zoteteza zina, magetsi ndi maziko amayikidwa pazigawo za TOP ndi BOTTOM. Komabe, pulogalamuyi iyenera kukwaniritsa zomwe mukufuna. Zowonongeka izi zilipo:
1, magetsi ndi nthaka zili kutali kwambiri. Ndege impedance ndi yayikulu kwambiri.
2, chifukwa chakukhudzidwa ndi pulogalamu yamagetsi, magetsi ndi kukhazikika sikokwanira. Chizindikiro cha siginidwe sichimatha chifukwa chazosakwanira kutanthauzira.
Mwachizoloŵezi, mphamvu ndi kukhazikika kwa yankho ndizovuta kuzigwiritsa ntchito ngati ndege yathunthu chifukwa chazida zambiri zomwe zili pamwamba. Zomwe zimatetezedwa ndizabwino kwambiri. Zovuta kukhazikitsa; Kugwiritsa ntchito kwake kuli ndi malire. Komabe, ndiyo njira yabwino kwambiri yosanjikiza pa bolodi limodzi.
Ndondomeko 3, yofanana ndi njira 1, imagwiritsidwa ntchito pomwe zida zazikulu zimayikidwa ndi BOTTOM kapena wiring signal wiring.
Mwachidziwitso, pali njira zitatu.
Ndondomeko 1:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mapangidwe); L3 (wosanjikiza magetsi); BOT (wosanjikiza chizindikiro).
Pulogalamu 2:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (magetsi osanjikiza); L2 (wosanjikiza chizindikiro); L3 (Chizindikiro Chazizindikiro; BOT (pansi).
Dongosolo 3:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mphamvu yamagetsi); L3 (chingwe cholumikiza); BOT (wosanjikiza chizindikiro).
Chizindikiro chachizindikiro
Pansi
mphamvu
Chizindikiro chachizindikiro
Kodi ubwino ndi zovuta za njira zitatuzi ndi ziti?
Ndondomeko 1, chonyamulira chachikulu cha zigawo zinayi za kapangidwe ka PCB, pali nthaka pansi pa chigawochi, chizindikirocho ndichabwino kwambiri TOP wosanjikiza; Pazipangizo zosanjikiza, malangizidwe otsatirawa akulimbikitsidwa: Ma mbale oyimitsa mphamvu (GND mpaka MPHAMVU) sayenera kukhala ochepa kwambiri kuti achepetse kutayika kwa MPHAMVU ndi kukhazikika; Onetsetsani kuwonongeka kwa ndege.
Ndondomeko 2, kuti mukwaniritse zoteteza zina, magetsi ndi maziko amayikidwa pazigawo za TOP ndi BOTTOM. Komabe, pulogalamuyi iyenera kukwaniritsa zomwe mukufuna. Zowonongeka izi zilipo:
1, magetsi ndi nthaka zili kutali kwambiri. Ndege impedance ndi yayikulu kwambiri.
2, chifukwa chakukhudzidwa ndi pulogalamu yamagetsi, magetsi ndi kukhazikika sikokwanira. Chizindikiro cha siginidwe sichimatha chifukwa chazosakwanira kutanthauzira.
Mwachizoloŵezi, mphamvu ndi kukhazikika kwa yankho ndizovuta kuzigwiritsa ntchito ngati ndege yathunthu chifukwa chazida zambiri zomwe zili pamwamba. Zomwe zimatetezedwa ndizabwino kwambiri. Zovuta kukhazikitsa; Kugwiritsa ntchito kwake kuli ndi malire. Komabe, ndiyo njira yabwino kwambiri yosanjikiza pa bolodi limodzi.
Ndondomeko 3, yofanana ndi njira 1, imagwiritsidwa ntchito pomwe zida zazikulu zimayikidwa ndi BOTTOM kapena wiring signal wiring.
Mwachidziwitso, pali njira zitatu.
Ndondomeko 1:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mapangidwe); L3 (wosanjikiza magetsi); BOT (wosanjikiza chizindikiro).
Pulogalamu 2:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (magetsi osanjikiza); L2 (wosanjikiza chizindikiro); L3 (Chizindikiro Chazizindikiro; BOT (pansi).
Dongosolo 3:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mphamvu yamagetsi); L3 (chingwe cholumikiza); BOT (wosanjikiza chizindikiro).
Chizindikiro chachizindikiro
Pansi
mphamvu
Chizindikiro chachizindikiro
Kodi ubwino ndi zovuta za njira zitatuzi ndi ziti?
Ndondomeko 1, chonyamulira chachikulu cha zigawo zinayi za kapangidwe ka PCB, pali nthaka pansi pa chigawochi, chizindikirocho ndichabwino kwambiri TOP wosanjikiza; Pazipangizo zosanjikiza, malangizidwe otsatirawa akulimbikitsidwa: Ma mbale oyimitsa mphamvu (GND mpaka MPHAMVU) sayenera kukhala ochepa kwambiri kuti achepetse kutayika kwa MPHAMVU ndi kukhazikika; Onetsetsani kuwonongeka kwa ndege.
Ndondomeko 2, kuti mukwaniritse zoteteza zina, magetsi ndi maziko amayikidwa pazigawo za TOP ndi BOTTOM. Komabe, pulogalamuyi iyenera kukwaniritsa zomwe mukufuna. Zowonongeka izi zilipo:
1, magetsi ndi nthaka zili kutali kwambiri. Ndege impedance ndi yayikulu kwambiri.
2, chifukwa chakukhudzidwa ndi pulogalamu yamagetsi, magetsi ndi kukhazikika sikokwanira. Chizindikiro cha siginidwe sichimatha chifukwa chazosakwanira kutanthauzira.
Mwachizoloŵezi, mphamvu ndi kukhazikika kwa yankho ndizovuta kuzigwiritsa ntchito ngati ndege yathunthu chifukwa chazida zambiri zomwe zili pamwamba. Zomwe zimatetezedwa ndizabwino kwambiri. Zovuta kukhazikitsa; Kugwiritsa ntchito kwake kuli ndi malire. Komabe, ndiyo njira yabwino kwambiri yosanjikiza pa bolodi limodzi.
Ndondomeko 3, yofanana ndi njira 1, imagwiritsidwa ntchito pomwe zida zazikulu zimayikidwa ndi BOTTOM kapena wiring signal wiring.
Mwachidziwitso, pali njira zitatu.
Ndondomeko 1:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mapangidwe); L3 (wosanjikiza magetsi); BOT (wosanjikiza chizindikiro).
Pulogalamu 2:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (magetsi osanjikiza); L2 (wosanjikiza chizindikiro); L3 (Chizindikiro Chazizindikiro; BOT (pansi).
Dongosolo 3:
Chosanjikiza chamagetsi, chosanjikiza pansi ndi zigawo ziwiri zaziwonetsero zimakonzedwa motere:
TOP (wosanjikiza chizindikiro); L2 (mphamvu yamagetsi); L3 (chingwe cholumikiza); BOT (wosanjikiza chizindikiro).
Chizindikiro chachizindikiro
Pansi
mphamvu
Chizindikiro chachizindikiro
Kodi ubwino ndi zovuta za njira zitatuzi ndi ziti?
Ndondomeko 1, chonyamulira chachikulu cha zigawo zinayi za kapangidwe ka PCB, pali nthaka pansi pa chigawochi, chizindikirocho ndichabwino kwambiri TOP wosanjikiza; Pazipangizo zosanjikiza, malangizidwe otsatirawa akulimbikitsidwa: Ma mbale oyimitsa mphamvu (GND mpaka MPHAMVU) sayenera kukhala ochepa kwambiri kuti achepetse kutayika kwa MPHAMVU ndi kukhazikika; Onetsetsani kuwonongeka kwa ndege.
Ndondomeko 2, kuti mukwaniritse zoteteza zina, magetsi ndi maziko amayikidwa pazigawo za TOP ndi BOTTOM. Komabe, pulogalamuyi iyenera kukwaniritsa zomwe mukufuna. Zowonongeka izi zilipo:
1, magetsi ndi nthaka zili kutali kwambiri. Ndege impedance ndi yayikulu kwambiri.
2, chifukwa chakukhudzidwa ndi pulogalamu yamagetsi, magetsi ndi kukhazikika sikokwanira. Chizindikiro cha siginidwe sichimatha chifukwa chazosakwanira kutanthauzira.
Mwachizoloŵezi, mphamvu ndi kukhazikika kwa yankho ndizovuta kuzigwiritsa ntchito ngati ndege yathunthu chifukwa chazida zambiri zomwe zili pamwamba. Zomwe zimatetezedwa ndizabwino kwambiri. Zovuta kukhazikitsa; Kugwiritsa ntchito kwake kuli ndi malire. Komabe, ndiyo njira yabwino kwambiri yosanjikiza pa bolodi limodzi.
Ndondomeko 3, yofanana ndi njira 1, imagwiritsidwa ntchito pomwe zida zazikulu zimayikidwa ndi BOTTOM kapena wiring signal wiring.