Yuav ua li cas ntxiv kev tiv thaiv tiv thaiv nyob rau hauv interface kev tsim ntawm cov tshuab sib txuas?
Tso lus
一, Cov kev pheej hmoo raug thiab kev tiv thaiv cov kev tiv thaiv kev sib txuas lus
Niaj hnub nim sib txuas lus sib txuas lus zais niaj hnub no ntsej muag peb cov kev pheej hmoo tseem ceeb:
Cov hluav taws xob hluav taws xob tawm (ESD): Tib neeg lub cev muaj hluav taws xob zoo li cas tuaj yeem ncav cuag ± 15kv tiv thaiv ntawm IEC 61000-4-qauv.
Surge cuam tshuam: xob laim voltage tuaj yeem ncav cuag 6kv, thiab kev txhawb nqa kev hloov pauv tau txwv nrog clamping voltage tsawg dua los yog sib npaug rau 32v.
Cov paib kev ncaj ncees degradation: kev kub ceev cov cim qhia (xws li USB 3.0) Yuav tsum muaj kev tiv thaiv kev tiv thaiv nrog 0.3PF kom tsis txhob muaj teeb meem thiab jitter.
Noj hom -}} C interface raws li ib qho piv txwv, uas txhawb nqa 4.5a} paket messive ntawm tsuas yog 0.2pf. Nws tuaj yeem ua tiav ± 25kV Kev tiv thaiv huab cua cua thiab ua kom tau raws li qhov yuav tsum tau ua ntawm USB4 raws tu qauv rau cov cim kev ncaj ncees.
2, lub moj khaum rau xaiv cov kev tiv thaiv kev tiv thaiv
1. Tub ntxhais parameter txuam
Rov Qab Ua Haujlwm Voltage (VRMM): nws yuav tsum yog 1.2 npaug siab dua qhov kev ua haujlwm siab tshaj plaws ntawm lub interface. Piv txwv li, cov khoom siv nrog VRMM ntau dua lossis sib npaug ntawm 6V yuav tsum tau xaiv rau 5V fais fab mov interface.
Clamp Voltage (VC): Nws yuav tsum qis dua qhov tawg ntawm voltage ntawm kev tiv thaiv nti. Lub HDMI 2.1 interface yuav tsum muaj cov khoom siv tiv thaiv nrog VC tsawg dua lossis sib npaug ntawm 8V.
Cov kev tiv thaiv dynamic tiv thaiv (Rdyn): cuam tshuam rau cov lus teb hloov pauv, nrog tus nqi ib txwm muaj lossis sib npaug rau 0.5 ω.
Junction capactsance (CT): Kev kub ceev cuam tshuam kom muaj CT tsawg dua lossis sib npaug nrog PCIE 5.0 Interfaces xav tau cov khoom siv nrog 0.1pf.
2. Topology kev yoog
Ib leeg xaus teeb liab tiv thaiv: Siv Unidirectional diodes, xws li smbj5.0a nrog rau Uart interface.
Kev ntsuas kev tiv thaiv kev sib xyaw: Yuav tsum tau muaj cov cuab yeej channel sib xyaw ua ke, xws li DW24p4N3N3-s siv rau cov npav, txhawb nqa 150A.
Ntau channel sib xyaw ua ke: hom {-}} c inlined adopts dw05}}} chanka kev tiv thaiv, txuag ntau dua 30% ntawm qhov chaw PCB.
3, Tsim kev tiv thaiv cov txheej txheem rau cov kev cuam tshuam zoo
1. USB interface tiv thaiv kev ua lag luam
USB 3.0 / 3.1 interface yuav tsum muaj peb -}} Kev tiv thaiv qib:
Qib 1: TVs Diode (xws li Smbj6.0ca) ± 15kv ESD.
Qib thib ob: Hom hom choke (xws li DLW21SN) lim tawm suab nrov.
Qib thib peb: tsawg Capacitance ESD diodes (xws li USLC6-2SC6) Ua tiav kev tiv thaiv zaum kawg, nrog rau kev tshav kub zog ntawm 0.5pf.
2. Ethernet Interface Protection Scheme
Gigabet Ethernet Interfaces yuav tsum tau sib npaug kev tiv thaiv thiab teeb liab zoo:
Phy Chip Pem Hauv Ntej -}}}}}} de de as de bid bid bid dection d d d d d d d d d dвodes (xws li Clamp Voltage tsawg dua los yog sib npaug rau 6v.
Transformer theem nrab: kev sib xyaw ua ke Tube (GDT) thiab PTC tus kheej foll kom ua tiav paluing surge tiv thaiv.
Cable Xaus: Nruab nrog RJ45 interface thiab ua - hauv kev tiv thaiv module, txhawb 8kV tiv tauj tawm.
3. Wireless Kev Sib Txuas Lus Module
5G module kev tiv thaiv yuav tsum tau them sai sai rau siab - cov yam ntxwv:
Kav hlau txais xov chaw nres nkoj: Siv Ultra - Tsawg Capacitance Schottky Diodes (xws li ib lub tshav dav hlau cap5nc) nrog ib lub tshav dav hlau capacitance ntawm tsawg dua los yog sib npaug rau 0.8PF.
Lub Hwj Chim PIN: Xa ib Zener Diode (xws li 1n4733a) kom muaj 5.1v voltage stabilization.
Cov tsheb npav: Siv siab - ceev esd array (xws li ESD5z5.0t1g), lub sijhawm teb<1ns.
4, cov ntsiab lus ntsiab lus tseem ceeb hauv kev xyaum engineering
1. PCB cov qauv ua kom zoo
Kev Siv Hluav Taws Xob: Cov cuab yeej tiv thaiv yuav tsum muab tso rau ze rau ntawm lub interface, thiab qhov sib txawv hauv cov xov hluav taws xob ntev yuav tsum tsawg dua lossis sib npaug nrog 5mL.
Kev Kho Av: Lub hnub qub zoo li lub hauv paus yog siv, thiab cov khoom tiv thaiv av tiv thaiv tau txuas nrog lub teeb liab hauv av los ntawm 0 ω resistor.
Thermal tsim: Cov Khoom Siv Hluav Taws Xob Cov Hluav Taws Xob (xws li DW24P4N3-s rau kev teeb tsa 150A Surges of Ringle thiab Kub Kev Tswj Xyuas Kub 150 Qib.
2. Kev sim thiab cov qauv pov thawj
ESD kev kuaj: Tshawb Xyuas Siv Tib Neeg Lub Cev Qauv (HBM) ± 8KV thiab tshuab qauv (hli) ± 200v.
Surge Kuaj: Raws li IEC 61000-4-5 tus qauv, thov ib 1.2 / 50 μ S willetform los sim qhov tsis ua haujlwm ntawm cov khoom siv tiv thaiv.
Kev ntsuas kev ncaj ncees: los ntawm cov duab kos duab duab, kom Jitter<50ps and error rate<10 ^ -12.
