AN3468
Ho theha Mofuta oa 1/2 802.3 kapa HDBaseT Type 3 Powered
Sesebelisoa sa Front-End se Sebelisa PD702x0 le PD701x0 ICs
Selelekela
Lethathamo lena la kopo le fana ka litataiso tsa ho rala sistimi ea Power over Ethernet (PoE) Powered Device (PD) bakeng sa IEEE® 802.3af, IEEE 802.3at, HDBaseT (PoH), le lits'ebetso tsa Universal Power Over Ethernet (UPoE) ka ho sebelisa lelapa la Microchip le ka pele. -qeta PD lipotoloho tse kopantsoeng. Tafole e latelang e thathamisa lihlahisoa tsa Microchip PD.
Letlapa la 1. Linyehelo tsa Lihlahisoa tsa Lisebelisoa tsa Microchip Powered
| Karolo | Mofuta | Sephutheloana | IEEE® 802.3af |
IEEE 802.3 ho |
HDBaseT (PoH) |
UPoE |
| PD70100 | Qetellong ea bokapele | 3 limilimithara × 4 limilimithara 12L DFN | x | — | — | — |
| PD70101 | Karolo e ka pele + PWM | 5 limilimithara × 5 limilimithara 32L QFN | x | — | — | — |
| PD70200 | Qetellong ea bokapele | 3 limilimithara × 4 limilimithara 12L DFN | x | x | — | — |
| PD70201 | Karolo e ka pele + PWM | 5 limilimithara × 5 limilimithara 32L QFN | x | x | — | — |
| PD70210 | Qetellong ea bokapele | 4 limilimithara × 5 limilimithara 16L DFN | x | x | x | x |
| PD70210A | Qetellong ea bokapele | 4 limilimithara × 5 limilimithara 16L DFN | x | x | x | x |
| PD70210AL | Qetellong ea bokapele | 5 limilimithara × 7 limilimithara 38L QFN | x | x | x | x |
| PD70211 | Karolo e ka pele + PWM | 6 limilimithara × 6 limilimithara 36L QFN | x | x | x | x |
| PD70224 | Borokho bo loketseng ba diode | 6 limilimithara × 8 limilimithara 40L QFN | x | x | x | x |
Microchip e fana ka lisebelisoa tsa PD tse ikemetseng tse hlokang PWM IC ea kantle ho fetolela molumo o phahameng oa PoE.tage theohetse ho phepelo e laoloang voltage sebelisoa ke kopo. Ho feta moo, Microchip e fana ka lisebelisoa tsa PD tse kopanyang PD ea pele le PWM ka har'a sephutheloana sa sehlahisoa. Bophahamo ba molaetsa ona oa ts'ebeliso ke ho hlalosa moralo oa PoE PD o ka pele o sebelisa lihlahisoa tsa pele-pele tsa Microchip (PD701x0 le PD702x0). Tokomane ena e boetse e kenyelletsa tlhaloso ea likarolo tsa bohlokoa le mesebetsi ea lihlahisoa tsa Microchip's PD, ka bokhuts'oaneview ea ts'ebetso ea PoE, litekanyetso le lintlha tsa bohlokoa tsa tekheniki bakeng sa moralo oa PoE PD.
Lihlahisoa tse ka pele tsa PD li fana ka tlhahlobo e hlokahalang, lihlopha, mesebetsi ea matla, le maemo a hona joale a sebetsang a lumellanang le litekanyetso tse thathamisitsoeng.
Microchip e fana ka sehlahisoa se tlatselletsang bakeng sa lits'ebetso tsa PoE PD, PD70224 Ideal Diode Bridge, e leng sebaka sa tahlehelo e tlase ho borokho ba diode tse peli bakeng sa ts'ireletso ea polarity.
Microchip e fana ka liphutheloana tse felletseng tsa moralo oa litšupiso le Boto ea Tlhahlobo (EVBs). Bakeng sa ho fihlella liphutheloana tsena tsa moralo, maqephe a data a sesebelisoa, kapa lintlha tsa ts'ebeliso, ka kopo ikopanye le Mookameli oa Kopano ea Client oa sebakeng sa heno oa Microchip kapa etela rona. website at www.microchip.com/poe.
Bakeng sa tšehetso ea tekheniki, ikopanye le Embedded Solutions Engineers ea sebakeng sa heno kapa u ee ho microchipsupport.force.com/s/.
Microchip PoE Front-End PD Controller Lintlha tsa bohlokoa
Lintlha tse latelang ke likarolo tse tloaelehileng tsa Microchip PoE eohle
- Balaoli ba PD.
- Letšoao la ho lemoha PD
- Signature e hlophisitsoeng ea PD
- Fetoha e kopantsoeng ea ho itšehla thajana
- 24.9 k ho khaoha ha sehano sa motekeno oa tekeno ha motlakase o buletsoe, bakeng sa ho boloka matla
- Tekanyetso ea hajoale ea Inrush (qalo e bonolo)
- Phaello ea phepelo e kopaneng ea 10.5V bakeng sa li-converter tsa DC-DC
- Tšireletso e feteletseng
- Li-circuits tsa ho ntša metsi ka hare ho DC-DC bulk capacitor
- Mocheso o pharalletseng o sebetsang ke 40 °C ho isa ho 85 °C
- Tšireletso ea mocheso oa On-Chip
Tafole e latelang e thathamisa likarolo tse fapaneng ho balaoli ba PoE PD.
Letlapa la 2. Microchip PoE Front-End PD Controller Lintlha tsa Bohlokoa
| Nomoro ea Karolo | Mofuta oa IC | Litekanyetso | Max. Matla (W) |
Max. Hona joale (A) |
Max. Khanyetso (Ω) |
LIFOLATSA 1 | WA Ea pele Pina ea 2 |
VAUX |
| PD70100 | Qetellong ea bokapele | IEEE 802.3af | 15.4 | 0.45 | 0.6 | MONATE | Che | Ee |
| PD70200 | Qetellong ea bokapele | IEEE 802.3af IEEE 802.3at |
47 | 1.123 | 0.6 | THABANG PGOOD 2-ketsahalo |
Che | Ee |
| PD70210A/AL | Qetellong ea bokapele | IEEE 802.3af IEEE 802.3at PoH UPoE |
95 | 2 | 0.3 | KA 4P_AT HD 4P_HD Ketsahalo ea 2/3 |
Ee | Ee |
| PD70210 | Qetellong ea bokapele | IEEE 802.3af IEEE 802.3at PoH UPoE |
95 | 2 | 0.3 | KA 4P_AT HD 4P_HD MONATE Ketsahalo ea 2/3 |
Che | Ee |
| PD70224 | Diode e ntle Borokho |
IEEE 802.3af IEEE 802.3at PoH UPoE |
95 | 2 | 0.76 | N/A | N/A | N/A |
- Bakeng sa litlhaloso tse qaqileng, sheba 4. Khopolo-taba ea Ts'ebetso e Akaretsang.
a. AT-AT folakha
b. 4P_AT—4-pair ea AT folakha
c. Folakha ea HD-HDBaseT
d. 4P_HD—4-pair HDBaseT
e. PGOOD-Power Good folakha - Pini ea bohlokoa ea WA e laola ts'ehetso ea ts'ebetso ea adaptara ea lebota mme e tiisa bohlokoa ba phepelo e thusang ho fana ka matla ho mojaro o tsoang mohloling o kantle oa DC.
PoE Overview
PoE e na le mohloli oa matla, o bitsoang Power Source Equipment (PSE), thapo ea Ethernet kapa Network (eo hangata e nang le meaho) e bolelele ba limithara tse 100, le Sesebelisoa sa Powered (PD) se amohelang data le matla a tsoang ho. Sesebelisoa sa Matla (PI) sa thapo ea Ethernet. PI hangata ke sehokelo sa mofuta oa RJ45 oa pini e robeli. PSE hangata e lula ho Ethernet Switch kapa Midspan. PD e lula sebakeng seo ka linako tse ling se bitsoang Data Terminal Equipment (DTE). Lipalo tse latelang li bontša litšoantšo tsa tokisetso ena.
Setšoantšo sa 1-1. Matla a lipara tse peli holim'a Data-Alternative A
Setšoantšo sa 1-2. Matla a lipara tse peli holim'a Spare-Alternative B
Setšoantšo sa 1-3. Setšoantšo sa motheo sa PD Block
PD e fana ka mesebetsi e latelang.
- Tšireletso ea polarity–voltagpolarity ho PI ha e tiisetsoe ke litekanyetso. Ka hona, borokho ba diode bo sebelisoa ho netefatsa polarity e nepahetseng ho kenyelletsong ea PD. Bakeng sa tahlehelo ea matla e ntlafalitsoeng le sebaka sa PCB, sebelisa Microchip PD70224 Ideal Diode Bridge. Ho ka boela ha sebelisoa marokho a tloaelehileng a diode.
- Ho sibolloa - ho fana ka signature bakeng sa ho lemoha.
- Classification-e fana ka li-signature bakeng sa li-signature tsa lihlopha.
- Ho qala-ka mor'a ho lemoha le ho hlophisoa, ho fana ka ts'ebeliso ea matla e laoloang.
- Ho itšehla thajana- sebaka sa PoE se tlameha ho ba le 1500 VAC ho itšehla thajana ho tloha lefats'eng le ho tloha likarolong tse fumanehang habonolo. Ho khothaletsoa ho fana ka ho itšehla thajana ka sesebelisoa se ikhethileng sa DC/DC. Ka meralo e sa ikhethileng, kopo ea ho qetela e tlameha ho fana ka ho itšehla thajana hona. Ho na le maikutlo a hore moralo o sa ikhethileng o boloka litšenyehelo, empa ha e le hantle sena ha se nnete hobane o ntse o hloka ho fana ka leeme la molaoli ka mor'a ho qala ho qala, ho bolelang "inductor ea tloaelo e nang le mapheo a thusang a bootstrap.
- VAUX– leeme bakeng sa ho qala ha DC/DC. Li-IC tsohle tsa Microchip PoE PD li na le matla a fumanehang a laoloangtage output, VAUX, e tla sebelisoa haholo-holo e le phepelo ea ho qala bakeng sa molaoli oa kantle oa DC/DC. VAUX ke tlhahiso e tlase ea hona joale, e tlase ea mosebetsi, e fanang ka hona joale ka nakoana ho fihlela phepelo ea bootstrap ea kantle e ka nka sebaka.
- PWM Controller le DC/DC–converter high PoE voltage theohetse ho phepelo e laoloang voltage sebelisoa ke kopo. PWM e ka ba sesebelisoa sa Microchip sa kantle kapa se kopantsoe ka har'a sephutheloana sa Microchip PD.
Litafole tse latelang li bapisa maemo a PoE bakeng sa PSE le PD. Tekanyetso ea HDBaseT (PoH) e latela mefuta ea lithapo tsa IEEE 802.3at mofuta oa 2. Leha ho le joalo, ka lebaka la ts'ehetso ea hona joale e phahameng, e fokotsa palo ea likhoele ka har'a bongata ba cable e le 'ngoe.
Lethathamo la 1-1. IEEE 802.3af, 802.3at, le Litekanyetso tsa HDBaseT tsa PSE
| Litlhoko tsa PSE | IEEE® 802.3af kapa IEEE 802.3at Mofuta oa 1 | IEEE 802.3 mofuteng oa 2 | 2-Pair HDBaseT Mofuta oa 3 | 4-Pair HDBaseT Mofuta oa 3 |
| Guaranteed matla at Tlhahiso ea PSE |
15.4W | 30W | 47.5W | 95W |
| PSE tlhahiso voltage | 44V ho isa ho 57V | 50V ho isa ho 57V | 50V ho isa ho 57V | 50V ho isa ho 57V |
| Guaranteed current at | 350 mA DC e nang le holimo | 600 mA DC e nang le holimo | 950 mA DC e nang le holimo | 2x 950 mA DC e nang le |
| Tlhahiso ea PSE | ho fihlela ho 400 mA litlhōrō | ho fihlela ho 686 mA litlhōrō | ho fihlela ho 1000 mA litlhōrō | ho fihlela ho 2000 mA litlhōrō |
| Boholo ba khanyetso ea loop ea cable | 200 | 12.50 | 12.50 | 12.50 |
| Sehlopha sa 'mele | Taba ea boikhethelo | E tlamehang | E tlamehang | E tlamehang |
| Lihlopha tse tšehelitsoeng tsa 'mele | Sehlopha sa 0 ho isa ho sa 4 | Sehlopha sa 4 se tlamang | Sehlopha sa 4 se tlamang | Sehlopha sa 4 se tlamang |
| Sehlopha sa lihokelo tsa data | Taba ea boikhethelo | Taba ea boikhethelo | Taba ea boikhethelo | Taba ea boikhethelo |
| 2-Liketsahalo tsa sehlopha | Ha ho hlokahale | E tlamehang | Ha ho hlokahale | Ha ho hlokahale |
| 3-Liketsahalo tsa sehlopha | Ha ho hlokahale | Ha ho hlokahale | E tlamehang | E tlamehang |
| 4-para ho fepa ka matla | Ha ea lumelloa | Dumelletsoe | NA | Dumelletsoe |
| Puisano | 10/100 BaseT | 10/100/1000 BaseT | 10/100/1000/ | 10/100/1000/ |
| Puisano tshehelitsoe |
10/100 BaseT (Midspan) 10/100/1000 BaseT (swicha) |
10/100/1000 BaseT ho akarelletsa le Midspans (Ka bobeli mofuta oa 1 le mofuta oa 2) |
10/100/1000/ 10000 BaseT |
10/100/1000/ 10000 BaseT |
Lethathamo la 1-2. IEEE 802.3af, 802.3at, le HDBaseT Maemo a PD
| Litlhoko tsa PD | IEEE 802.3af kapa IEEE 802.3at Mofuta oa 1 |
IEEE 802.3 mofuteng oa 2 | Mofuta oa 3 oa HDBaseT |
| Matla a tiisitsoeng ho PD ho kenya ka mor'a cable ea 100 m | 12.95W | 25.50W | 72.40W |
| PD input voltage | 37V ho isa ho 57V | 42.5V ho isa ho 57V | 38.125V ho isa ho 57V |
| Boholo ba DC hajoale ho PD input | 350 mA | 600 mA | 1.7A |
| Sehlopha sa 'mele | E tlamehang (Ha ho sehlopha= Sehlopha sa 0) |
E tlamehang | E tlamehang |
| Lihlopha tse tšehelitsoeng tsa 'mele | Sehlopha sa 0 ho isa ho sa 4 | Sehlopha sa 4 se tlamang | Sehlopha sa 4 se tlamang |
| Sehlopha sa lihokelo tsa data | Taba ea boikhethelo | Taba ea boikhethelo | Taba ea boikhethelo |
| 2-Liketsahalo tsa sehlopha | Ha ho hlokahale | E tlamehang | Taba ea boikhethelo |
| Ho amohela matla a 4-pair | Dumelletsoe | Dumelletsoe | Tšehetsa |
| Puisano e tsheheditswe | 10/100 BaseT (Midspan) 10/100/1000 BaseT (swicha) |
10/100/1000 BaseT ho kenyelletsa le Midspans (mofuta oa 1 le mofuta oa 2 ka bobeli) | 10/100/1000/10000 BaseT |
DC voltage ka li-wire pairs e ka ba ea polarity. Ho amohela mefuta eohle e ka bang teng ea matla a PoE a fumanehang ho PI, ho hlokahala tšebeliso ea PD70224 Ideal Diode Bridge kapa marokho a mabeli a diode ka lehlakoreng la PD.
Mokhahlelong oa ho lemoha, litekanyetso li hlalosa mekhoa ea ho khetholla hore na thapo e hokahane le PD e lumellanang le maemo, e leng sesebelisoa se khonang ho fumana matla, se kopantsoeng le sesebelisoa sa bokhoni ba ho amohela matla kapa se khaotsoe.
Litekanyetso tsena li boetse li hlalosa mekhoa ea ho khetholla litlhoko tsa matla kapa hore na PD e lumellanang le PoE e khona ho amohela matla a makae le mekhoa eo PD e ka lekanyetsang boemo ba matla bo tšehetsoang ke PSE. Sena se bitsoa mokhahlelo oa lihlopha.
PSE e lumellanang ha e sebelise matla a ho sebetsa ho PI ho fihlela e atlehile ho lemoha PD e lumellanang le PoE. Nakong ea mohato oa ho lemoha, PSE e sebelisa letoto la matla a tlaasetage lekola maqhubu a pakeng tsa 2.80V le 10.0V. Ho arabela ho li-pulses tsena, PD e lumellanang le PoE e tlameha ho fana ka signature e nepahetseng, e hlokang ho hanyetsa phapang pakeng tsa 23.7 k le 26.3 k le bokhoni ba ho kenya pakeng tsa 50 nF le 120 nF. Ho fana ka khanyetso e nepahetseng ea ho lemoha, balaoli bohle ba Microchip PoE PD ba hloka mohanyetsi oa kantle oa 24.9 k. Mohanyetsi ona o hokahane lipakeng tsa VPP ea sesebelisoa sa PD le liphini tsa RDET. Ha molaoli oa Microchip PD a bona tlhahiso ea voltage sebakeng sa ho lemoha 2.7V ho 10.1V, ka hare e kopanya mohanyetsi ona ho PI. Ka mor'a hore karolo ea ho lemoha e felile, molaoli oa Microchip o itokolla ka bohona mochine o thibelang ho lemoha ho qoba tahlehelo e eketsehileng ea matla. 100V ceramic capacitor e tlameha ho hokahanngoa pakeng tsa VPP le VPN ka lithakhisa tsa sesebelisoa sa PD ho fana ka bokhoni bo nepahetseng ba ho lemoha (litekanyetso tse khothalelitsoeng 82 nF ho 100 nF).
Ka mor'a hore ho fumanoe signature e nepahetseng, PSE e ka qala mokhahlelo oa lihlopha. Khethollo ke khetho bakeng sa 802.3af le 802.3at mofuta oa 1 PSEs le PDs; 'me e tlama bakeng sa 802.3at mofuta oa 2 le PoH. PSE e eketsa molumotage kena ka voltage fapaneng ea 15.5V ho 20.5V bakeng sa nako e behiloeng ea nako. Sena se bitsoa monoana oa lihlopha. Haeba ho hlokahala menoana e fetang e le 'ngoe, menoana ea lihlopha e aroloa ka seo ho thoeng ke letšoao la voltage, moo PSE e theolang voltage ho sebaka se pakeng tsa 6.3V le 10.1V, hape ka nako e itseng.
Ha a ntse a classification voltage kapa monoana oa sehlopha o sebelisoa, PD joale e tlameha ho hula hona joale ho bontša sehlopha sa eona. Ho li-microchip controller signature ea lihlopha e hlophisoa ke RCLS e hanyetsanang e hokahaneng pakeng tsa lisebelisoa tsa PD RCLS le VPN ka liphini. Ha ho kenya voltage sebakeng sa lihlopha, PD e hula hona joale e hlophisitsoeng ke RCLS.
IEEE 802.3at mofuta oa 2 PD e lumellanang e hlokeha ho lemoha lihlopha tsa liketsahalo tse 2 le ho fana ka lipotoloho tse ka hare letšoao la folakha ea AT le bontšang PD e hokahane le PSE e lumellanang le mofuta oa AT 2.
Ho hlokahala PD e lumellanang le mofuta oa 3 bakeng sa ho lemoha lihlopha tsa liketsahalo tse 3 le ho fana ka lipotoloho tsa ka hare letšoao la folakha ea HDBaseT le bontšang hore PD e hokahane le PSE ea mofuta oa 3 e lumellanang le HDBaseT.
Haeba kou voltage teng ho theolelo ea PI e ka tlase ho 2.8V, li-reset tsa tlhahisoleseling tsa sehlopha sa PSE mme PD e tlameha ho seta folakha e itšetlehileng ka sehlopha.
Li-Microchip PoE PDs li na le sesebelisoa se ikhethileng se arolang lehlakore le khutlang la PD ho tloha ho PI nakong ea mekhahlelo ea ho lemoha le ho arola, kapa nakong ea tahlehelo ea matla le boima bo feteletseng. PD e bulela switch ea ho itšehla thajana ho PI voltage maemong a 42V kapa ho feta ebe o tima switch ea ho itšehla thajana ho PI voltage ka tlase ho 30.5V. Ba boetse ba beha moeli oa hona joale nakong ea ho qala ho fihla ho 350 mA kapa ka tlase.
Lipalo tse latelang li bonts'a ponelopele ea PoE ea mantlha, ho hlopha, le tatelano ea matla bakeng sa mofuta oa 1 IEEE 802.3af le mofuta oa 2 IEEE 802.3at, ka ho latellana. Maemo a sehlopha, maqhubu a bona a tsamaisanang, le bahanyetsi ba RCLS ba khothaletsoang ba thathamisitsoe ho Lethathamo la 1-3.
Setšoantšo sa 1-4. Tekanyetso ea PoE ea Motheo, Tlhophiso, le Tatelano ea Matla a Matla bakeng sa IEEE 802.3af Standard
Setšoantšo sa 1-5. Ho fumanoa ha PoE ea Motheo, Khethollo, le Tatelano ea Matla a Matla bakeng sa 802.3at Standard
Lethathamo la 1-3. Litlhaloso tsa Hona Joale Litlhaloso le Li-Resistors tse Hlokehang tsa Sehlopha
| Sehlopha | Draw ea Hona joale ea PD Nakong ea ho Khetholla | Maemo a Khanyetso a RCLASS, Ω | ||
| Min | Lebitso | Max. | ||
| 0 | 0 mA | NA | 4 mA | Ha ea kengoa |
| 1 | 9 mA | 10.5 mA | 12 mA | 133 |
| 2 | 17 mA | 18.5 mA | 20 mA | 69.8 |
| 3 | 26 mA | 28 mA | 30 mA | 45.3 |
| 4 | 36 mA | 40 mA | 44 mA | 30.9 |
Hlokomela: PD input voltage nakong ea mekhahlelo ea lihlopha ke 14.5V ho 20.5V.
Ho sebelisa PD702x0 le PD701x0 ICs
PD702x0 le PD701x0 ICs li ka sebelisoa bakeng sa litsamaiso tsa 2-pair le 4-pair, joalo ka ha ho bonts'itsoe setšoantšong se latelang. Se hlahisoang ke marokho a mabeli a diode a kopantsoe le VPP (bese e ntle) le VPNIN (bese e mpe). Likhokahano tse hlahisoang ho converter/application ea DC/DC li entsoe lipakeng tsa VPP le VPNOUT. Setšoantšo sa 2-1. Tlhophiso e tloahelehileng ea 2- kapa 4-Pair e nang le PD70210/A/AL IC e le 'Ngoe
Ntle le likhokahano tsa mantlha tsa ho kenya / sephetho, likarolo tse latelang tsa kantle lia hlokahala bakeng sa ts'ebeliso e tloaelehileng:
- Mohanyetsi oa ho lemoha: Kopanya sehanyetsi sa 24.9 k ± 1% pakeng tsa VPP le phini ea RDET. Mohanyetsi ona o sebelisetsoa ho fana ka signature ea ho lemoha. Wat e tlasetagmofuta oa e o ka sebelisoa kaha ho na le khatello ea maikutlo e ka tlase ho 7 mW holim'a mohanyetsi ona ha karolo ea ho lemoha e ntse e sebetsa, 'me sehanyetsi se khaotsoe ka mor'a hore matla a sebetse.
- Reference resistor: Mohanyetsi o beha leeme la hajoale bakeng sa potoloho ea kahare e tlameha ho hokahanngoa lipakeng tsa RREF pin le VPNIN. Hokela sehanyetsi sa 60.4 k ±1% bakeng sa PD70210/A/AL ICs le 240 k ±1% bakeng sa PD70100/PD70200. Mohanyetsi ona o tlameha ho ba haufi le IC. Wat e tlasetagmofuta oa e ka sebelisoa (ho felloa ke matla ho ka tlase ho 1 mW).
- Mohanyetsi oa hona joale oa Classification: Boleng ba mohanyetsi o hokahantsoeng pakeng tsa phini ea RCLASS le VPNIN e etsa qeto ea hore na PD e tla hula joang nakong ea karolo ea lihlopha. Litekanyetso tse tsamaellanang le maemo a IEEE a lumellanang li fanoe tafoleng e fetileng.
- Capacitor ea ho kenya: IEEE e hloka bokhoni pakeng tsa 50 nF le 120 nF ho ba teng pakeng tsa VPP le VPNIN bakeng sa tekeno e nepahetseng ea ho lemoha. Bakeng sa tshebetso e ntle ka ho fetisisa le ho sireletsa chip ho tswa ho voltagka nakoana, Microchip e khothaletsa ho sebelisa ceramic capacitor 82 nF ho 100 nF ka 100V. E tlameha ho behoa haufi le ts'ebetso ea chip.
- Kenya TVS: Haeba marokho a diode a sebelisoa, bakeng sa ts'ireletso ea mantlha khahlanong le boemo ba mantlha ba voltage transients (<1 kV), ka bobeli 10×700 µS kapa 1.2×50 µS, 58V TVS (e kang SMBJ58A kapa e lekanang le eona) e tlameha ho hokeloa pakeng tsa phini ea VPP le VPNIN. Haeba borokho bo sebetsang ba PD70224 bo sebelisoa kapa bo kopana le litlhoko tsa surge tsa IEC/EN 61000-4-5 (2014 Ed.3), ITU-T K21, le GR-1089, joale bona Tlhaloso ea kopo ea Microchip AN3410.
- SUPP_S1 le likenyelletso tsa SUPP_S2 (PD70210/A/AL feela): Lihanyetsi tse 10 k li tlameha ho hokeloa ka tatellano ho e 'ngoe le e 'ngoe ea lithakhisa tsa SUPP_S1 le SUPP_S2. Lipontšo tsa lithakhisa tsena li tsoa ho lithakhisa tse tsamaellanang tsa borokho bo sebetsang PD70224, kapa ho tsoa ho sesebelisoa se thusang haeba ho sebelisoa marokho a tloaelehileng a diode joalo ka ha ho bontšitsoe setšoantšong se fetileng. Kenyelletso ena ho PD70210/A/AL e lumella ho beha lifolakha tsa AT le 4-para AT tse nang le li-midspan tse 4 tsa lefa tse fanang ka sekhahla se le seng sa sehlopha ho sete ka 'ngoe. Haeba SUPP_S1 le SUPP_S2 liphini li siiloe li butsoe, boemo ba lifolakha ho PD70210/A/AL bo ka har'a tafole e latelang.
Lethathamo la 2-1. Boemo ba Lifolakha tsa PD70210/A/AL ha SUPP_S1 le SUPP_S2 Pins li sa Hokahane
| Nomoro ea Menoana (N-Ketsahalo Sehlopha) |
AT Flag | Letšoao la HDBaseT | 4-Pair AT Flag | 4-Pair HDBaseT Flag |
| 1 | Lumela Z | Lumela Z | Lumela Z | Lumela Z |
| 2 | 0 V | Lumela Z | Lumela Z | Lumela Z |
| 3 | 0 V | 0 V | Lumela Z | Lumela Z |
| 4 | 0 V | 0 V | 0 V | Lumela Z |
| 5 | 0 V | 0 V | 0 V | Lumela Z |
| 6 | 0 V | 0 V | 0 V | 0 V |
- Power good (PD70100, PD70200, le PD70210 feela): Lets'oao le bulehileng la ho hula matla le fumaneha ho phini ea PGOOD. Kamora ho qala, folakha ea PGOOD e hlahisa molumo o tlasetage mabapi le VPNOUT ho tsebisa ts'ebeliso hore liporo tsa motlakase li se li lokile. Ho hula-holimo voltage pineng ena e lekanyelitsoe ho 20V bakeng sa PD70210 le ho VPP voltage bakeng sa PD7010x/PD7020x. Matla a matla a ka boela a huloa ke "bootstrap winding output" ea DC-DC, moo e lokelang ho aroloa ka Schottky diode ho tloha VAUX ho thibela ho hula ho eketsehileng ho tloha VAUX nakong ea ho qala.
Tlhokomeliso: Haeba PGOOD e sebelisoa ho qala ts'ebeliso ea kantle, kopo e tlameha ho fana ka 80 ms inrush ho tieho ea boemo ba ts'ebetso e hlokoang ke IEEE 802.3. - Lifolakha tse tlalehang mofuta oa PSE: Lifolakha tsena li ka ba sampe etelletsoeng pele ke kopo ea ho etsa qeto ea matla a phahameng a ho sebelisa. Lifolakha tsena kaofela ke li-drain pins tse bulehileng. Ho hula-holimo voltage ho lithakhisa tsena kaofela e lekanyelitsoe ho 20V bakeng sa PD70210/A/AL, le ho VPP voltage bakeng sa PD70200/PD70100. Lifolakha li ka huleloa ke "bootstrap winding output" ea DC-DC, moo e lokelang ho aroloa ka Schottky diode ho tloha VAUX. Boemo ba lifolakha bo beoa hanngoe feela ha boema-kepe bo qala 'me bo tiisetsoa ka tieho e ka bang 80 ms ho bontša hore ts'ebeliso ea hore tieho ea boemo ba ts'ebetso e felile. Haeba SUPP_S1 le SUPP_S2 liphini li ntse li fetoha ka mor'a hore port e buletsoe, lifolakha ha li fetohe ka tsela e nepahetseng.
- AT_FLAG (e fumaneha ho PD70210/A/AL le PD70200): Folakha ena e theoha haholo ha Mofuta oa 2 oa PSE le PD li kopana ka ho arola.
- HD_FLAG (e fumaneha ho PD70210/A/AL): Folakha ena e theoha haholo ha HDBaseT PSE le PD li tsebahatsa ka ho khethollana.
- 4P_AT_FLAG (e fumaneha ho PD70210/A/AL): Folakha ena e ea tlase ha mofuta oa li-4-pair tsa PSE le PD li khethollana ka ho arola.
- 4P_HD_FLAG (e fumaneha ho PD70210/A/AL): Folakha ena e ea tlase ha 4-pair (Twin) HDBaseT PSE
le PD ba tsebahatsana ka ho khethollana.
- Tlhahiso ea VAUX: VAUX ke tlhahiso e laoloang ea matla a tlaase e fumanehang bakeng sa ho sebelisoa e le phepelo ea ho qala bakeng sa molaoli oa kantle oa DC-DC converter. Ka mor'a ho qala, VAUX e tlameha ho tšehetsoa ho tsoa ho "bootstrapped" e thusang ea converter ea DC-DC. Tlhahiso ea VAUX e hloka hore capacitor ea ceramic ea bonyane 4.7 µF e hokahane ka kotloloho lipakeng tsa VAUX pin le VPNOUT pin ebe e behoa haufi le sesebelisoa.
Ts'ebetso ka Mohloli oa kantle oa DC
Lisebelisoa tsa PD tse sebelisang PD70210A/AL IC li fana ka ts'ebetso ea mantlha ea mohloli oa matla a thusang (DC wall adapter). Ka kakaretso, ho na le mekhoa e meraro ea ho fana ka matla ka mohloli o kantle:
- Mohloli oa kantle o hokahane ka kotloloho ho PD input (VPP ho VPNIN). Sena se hloka tlhahiso ea kantle ea mohloli oa voltage ho ba 42V bonyane ho se na mojaro le ho feta 36V ka mojaro o moholo. Adapter e tlameha ho aroloa ho VPP kapa VPNIN ka diode ea OR-ing. Tlhophiso ena ha e fane ka lintho tse tlang pele ho adaptara mme e ka sebelisoa le PD70210, PD70100, le PD70200.
- Mohloli oa kantle o hokahane ka kotloloho le tlhahiso ea PD (pakeng tsa VPP le VPNOUT). Mohloli oa kantle o tlameha ho aroloa ho VPP kapa VPNOUT ka diode ea OR-ing. Bakeng sa adaptara e tlang pele, ke PD70210A/AL feela e lokelang ho sebelisoa.
- Mohloli oa kantle o hokahane ka kotloloho le molumo o tlase oa kopotage phepelo ea liporo (se hlahisoang ke DC-DC converter). Mohloli o kantle o tlameha ho qheleloa ka thoko ho phepelo ea motlakase ea ts'ebeliso ebang ke ka khokahanyo e fetotsoeng, diode, kapa taolo e arohaneng eo mehloli ea eona e leng teng feela (e sa tebang hajoale).
Lipalo tse tharo tse latelang li bontša mohlalaampLes of PD70210A/AL e hlophisitsoeng ka adaptara ea kantle ea lebota. Bakeng sa lintlha tse ling le boleng bo khothalelitsoeng ba voltage dividers, bona AN3472: Ho kenya Tšebetsong Matla a Thuso ho PoE. Setšoantšo sa 3-1. Motlakase oa Matla o Hoketsoe ho PD70210 Input
Setšoantšo sa 3-1. Motlakase oa Matla o Hoketsoe ho PD70210 Input
Setšoantšo sa 3-2. Motlakase oa Matla o Hoketsoe ho PD70210A Output
Setšoantšo sa 3-3. Motlakase oa Matla o Hoketsoeng ho Phepelo ea Kopo
Khopolo ea Ts'ebetso e Akaretsang
Event Thresholds
PD ICs e fetoha lipakeng tsa linaha tse fapaneng ho latela bophahamo ba modumotage pakeng tsa VPP le VPNIN phini.
- VPPVPNIN= 1.3V ho isa ho 10.1V (ho phahama ha molumotage): RDET ea ho hanyetsa e hokahane pakeng tsa VPP le VPNIN.
- VPPVPNIN= 10.1V ho isa ho 12.8V (ho phahama ha molumotage): RDET e thibelang ho lemoha e khaotsoe VPNIN.
- VPPVPNIN= 11.4V ho isa ho 13.7V (ho phahama ha molumotage): Mohloli oa hona joale oa lihlopha o hokahane pakeng tsa VPP le VPNIN. Boemo bona bo theha sekhahla se hlophisitsoeng sa hajoale se behiloeng ke RCLASS. Boholo ba hajoale bo beha boemo ba sehlopha ho latela maemo a IEEE 802.3at le HDBaseT. Mosebetsi ona ke oa boikhethelo bakeng sa li-PD tse lumellanang le IEEE 802.3af 'me o tlamehile bakeng sa IEEE 802.3at le li-PD tse lumellanang le HDBaseT. Mohloli oa hona joale oa Classification o ntse o hokahane nakong ea VPP e ntseng e phahamatagho fihlela ho 20.9V.
- VPPVPNIN= 20.9V ho isa ho 23.9V (ho phahama ha molumotage): Mohloli oa hona joale oa Classification o khaotsoe. Ho na le hysteresis e itseng lipakeng tsa ho nolofalletsa le ho tima menyako ea mohloli oa hona joale oa sehlopha.
- VPPVPNIN= 4.9V ho isa ho 10.1V (fall voltage): Ena ke letšoao voltage range. IC e tla lemoha VPPVPNIN voltage oela ho tsoa ho sehlopha sa mohloli oa hona joale hokela moeli ho tšoaea moeli e le ketsahalo e le 'ngoe ea tekeno ea likarolo tse peli tsa liketsahalo. Palo ea sehlopha ho tšoaea liketsahalo tsa boemo bo tla etsa hore IC e behe lifolakha tse amehang maemong a bona a tlase.
- VPPVPNIN= 36V ho isa ho 42V (ho phahama ha molumotage): Sesebelisoa sa ho itšehla thajana se tlositsoe ho tloha Off state ho ea ho Inrush Current Limit (Soft Start) mode. Ka mokhoa ona, sesebelisoa sa ho itšehla thajana se fokotsa DC ea hona joale ho 240 mA (e tloaelehileng). Moeli oa hona joale oa potoloho nakong ea mokhoa o bonolo oa ho qala o hlokomela voltagPhapang ka har'a sesebelisoa sa ho itšehla thajana (VPNOUTVPNIN) mme e boloka inrush hajoale. Nakong ea "inrush" moeli oa hajoale, MOSFET e sebetsa ka mokhoa o tšoanang.
Ha VPNOUTVPNIN e theohela ho 0.7V kapa ka tlase, moeli oa ho itšehla thajana oa ho itšehla thajana o holofetse, VAUX e nolofalitsoe, sesebelisoa sa ho itšehla thajana se buletsoe ka botlalo ka 2.2A (boholo) holim'a tšireletso ea hona joale le lifolakha tse amehang li tiisetsoa ka mor'a ho lieha ho otla, e leng bonyane 80. Mof. - VPPVPNIN= 30.5V ho isa ho 34.5V (fall voltage): Sesebelisoa sa ho itšehla thajana se koetsoe, ho theha tšitiso e phahameng pakeng tsa VPNIN le VPNOUT. Tshebetso ya ho ntshitsa ha Bulk capacitor e a kgoneha mme e dula e le teng ha feela phapang pakeng tsa voltages VPP le VPNOUT li lula li le lipakeng tsa 30V le 7V. Haeba mohloli oa matla a thusang o sebelisoa, matla a oonatage tlameha ho ba ka holimo ho 34.5V, kapa diode ea ho itšehla thajana e tlameha ho eketsoa pakeng tsa VPNOUT le ho khutla ha mohloli oa matla a thusang ho thibela ho phalla ha hona joale.
- VPPVPNIN= 2.8V ho isa ho 4.85V (fall voltage): RDET e thibelang ho sibolla e hokahantsoe hape moeling ona. RDET e khaotsoe ha VPPVPNIN voltage theoha ka tlase ho 1.1V.
Inrush Current Limit
Moeli oa hona joale oa Inrush oa hlokahala bakeng sa ho fokotsa hona joale nakong ea tefiso ea pele ea li-capacitor tse ngata ha sistimi e qala mme e hlokoa ke litekanyetso tsa PoE. Maqhubu a maholo a inrush a ka etsa voltage sags ho PI, e leng eona e ka etsang hore lits'ebetso tsa sistimi li hokahane le menyako ea liketsahalo (joalo ka AT_FLAG) ho khutlela maemong a bona a pele. Moeli oa hona joale oa Soft Start o tla fokotsa haholo voltage ile ea theoha ha e qala.
Ho qala ka har'a capacitor ea bongata e felletseng ho fella ka ho felloa ke matla ho hoholo ha sesebelisoa sa ho itšehla thajana ka nako e itseng ho ipapisitse le boholo ba matla a mangata. Boholo ba qalong voltagHo theoha ha switjha ea ho itšehla thajana ho ka ba 42V. Matla a phahameng a felisitsoeng ke sesebelisoa sa ho itšehla thajana a fokotseha ha litefiso tse ngata tsa capacitor li ntse li tjhaja, 'me qetellong li fokotsehile ho ea ho phepelo e tloaelehileng ea matla a ho sebetsa ha sesebelisoa se BUTSE ka botlalo. Nako ea nako e hlokahalang ho tloha ho Soft Start mode ho ea ho mokhoa o tloaelehileng oa ts'ebetso e ka baloa ka mokhoa o latelang:
T = ((V 0.7) × C) / I
Moo:
I= IC ea hona joale nakong ea ho qala ha bonolo (hangata 240 mA)
C= Kakaretso ea matla a ho kenya ka bongata
V= Ea pele VPNOUTVPNIN voltage qalong ea ho qala ha bonolo (VMAX = VPP)
Boleng bo phahameng ba capacitor ea bongata ke 240 μF.
Ho tlosoa ha Bulk Capacitor
PD70210/A/AL ICs e fana ka tlhahiso ea capacitor e ngata ea kopo ha VPPVPNIN falling vol.tage theolela ka tlas'a konopo ea ho itšehla thajana. Tšobotsi ena e etsa bonnete ba hore bokhoni ba bongata ba kopo ha bo tsoe ka mochine oa ho lemoha, e leng se ka etsang hore ho saena ha ho lemoha ho hlolehe le ho thibela PSE ho qala PD. Ha e ntse e nolofalitsoe, ts'ebetso ea ho ntša metsi e fana ka bonyane bo laoloang ba hona joale ba 22.8 mA, bo phallang ka VPP pin, ka hare ka ho itšehla thajana ea 'mele oa MOSFET, le ho tsoa ka VPNOUT pin. Discharge circuitry monitors voltage phapang lipakeng tsa VPPVPNOUT, 'me e lula e sebetsa ha phapang e ntse e le tengtage ke 7V (VPPVPNOUT) 30V. Sebelisa equation e latelang ho bala nako e telele ea ho qeta:
T = ((V 7V) × C)/0.0228
Moo:
C= Kakaretso ea matla a ho kenya ka bongata
V= Ea pele ea VPPVPNOUT voltage ha o le mong, o tima
Example: Bakeng sa capacitor ea pele voltage ea 32V, ho nka 240 ms bakeng sa 220 µF capacitor ho tsoa boemong ba 7V.
Ts'ebetso ea ho lahla e na le sebali sa nako mme e sebetsa bonyane 430 ms.
Moqtage–VAUX
Li-Microchip PD IC tsohle li na le matla a fumanehang a laoloangtage output, VAUX, e tla sebelisoa haholo-holo e le phepelo ea ho qala bakeng sa molaoli oa kantle oa DC/DC. VAUX ke tlhahiso e tlase ea hona joale, e tlase ea mosebetsi, e fanang ka hona joale ka nakoana ho fihlela phepelo ea bootstrap ea kantle e ka nka sebaka. Bakeng sa ts'ebetso e tsitsitseng, kopanya 4.7 F kapa capacitor e kholoanyane pakeng tsa VAUX le lithapo tsa fatše tsa matla.
Tlhahiso ea VAUX e laoloa ka lebitso la 10.5V, 'me e fana ka lebelo le phahameng la 10 mA bakeng sa 10 ms. (5 ms. bakeng sa PD70200/ PD70100). Nako e tsoelang pele ke 4 mA bakeng sa PD7021x le 2 mA bakeng sa PD7020x/PD7010x. Ka tloaelo, tlhahiso ea VAUX e hokahane le phepelo ea bootstrapped ea matla a holimotage (joalo ka tlhahiso e thusang e lokisitsoeng ho tsoa ho sesebelisoa sa converter sa DC/DC se ka thoko). Tlhahiso ea VAUX ha e tebele hona joale. Hang ha bootstrapped voltage feta phallo ea VAUX voltage, tlhahiso ea VAUX ha e sa tla fana ka hona joale 'me e tla ba pepeneneng ts'ebetsong ea converter ea DC-DC. Ho khothalletsoa ho rala sehlahisoa se lokisitsoeng sa bootstrapped tlasa maemo ohle a ts'ebetso bakeng sa bonyane ba tlhahiso ea voltagea 12.5v.
Nakong ea Soft Start mode kapa ha switch ea ho itšehla thajana e tima, tlhahiso ea VAUX e holofatsoa ke VPP e oang.
PGOOD Sephetho
PD70210, PD70100, le PD70200 ICs li fana ka phallo e bulehileng e bonts'ang boemo bo botle ba matla. Sehlahisoa sena se fana ka tlhahiso e tlase e sebetsang ha voltage pakeng tsa VPP le VPNOUT e fihla hoo e ka bang 40V. Ha ho khothaletsoa, tlhahiso ea PGOOD e fetohela fatše ka sink ea hajoale ea 5 mA. Ha VPPVPNIN voltage oela ka tlase ho moeli oa ho tima switch ea ho itšehla thajana, tlhahiso ea PGOOD e khutlela boemong bo phahameng ba ho impedan.
Sephetho sena se ka sebelisoa ho lemoha ha PI voltage sebakeng sa ts'ebetso.
PD70210A/AL ha e na tlhahiso ea PGOOD. Haeba ts'ebetso e joalo e hlokahala, tlhahiso ea VAUX e ka sebelisoa e le khetho. Haeba u tlamella VAUX hekeng ea lets'oao le lenyenyane la kantle la N-channel FET, 'me mohloli oa eona ho VPNOUT, drain ea FET ena e ka sebelisoa e le phetisetso ea PGOOD.
Maikutlo a WA_EN (PD70210A/AL Feela)
Pin ena ea ho kenya e sebelisoa bakeng sa khokahanyo ea kantle ea matla pakeng tsa VPP le VPNOUT. Sheba Setšoantšo sa 3-1. Mohatelli oa R1 le R2 o hokahane pakeng tsa VPP le VPNOUT. Lihanyetsi tsena li behile moeli oa ho bulela P-channel FET. Keiti ea FET ea 100V e nang le lets'oao le tlase le mohloli li tlameha ho hokeloa ho R1. P-ch drain e hoketsoe ho kenya WA_EN ka sehanyetsi sa R3. R4 resistor e hoketsoe lipakeng tsa WA_EN le VPNIN. R3 le R4 li behile boemo boo ho bona tlhahiso e nepahetseng ea WA e fumanoang. Ho kenya WA_EN ho hloka boemo bo tlwaelehileng ba kelello. Ha tlhahiso ea WA_EN e phahame, switch ea PD70210A/AL ea ho itšehla thajana ea tima 'me lifolakha tsohle lia tiisetsoa-li fetoleloa boemong bo tlase. Tataiso ea khetho ea mohanyetsi e hlalositsoe lengolong la kopo AN3472: Matla a Thusang bakeng sa li-PD.
SUPP_S1 le SUPP_S2 Inputs (PD70210A/AL Feela)
Litlhahiso tsa SUPP_S1 le SUPP_S2 li thusa PD ho lemoha mohloli oa matla hore na ke data, lipara tse ling, kapa ka bobeli. E 'ngoe le e' ngoe ea lintho tsena e hloka hore ho be le diode e tloaelehileng ea cathode hore e hokahane le para e loketseng, haeba sesebelisoa sa PD se s.ampka tlase ho boemo bo phahameng ba 35V le ka holimo ho kenyelletso ena e bala para ena e le para e sebetsang. Litlhahiso tsena li sebelisoa ha ho sebetsa le PSE e khethehileng e nang le ho lemoha le ho arola lihlopha tse peli feela empa e na le matla ka lipara tse 'nè. Litlhahiso tsa SUPP_S1 le SUPP_S2 li tlameha ho ba le 10k resistor e hoketsoeng ka serial ho e 'ngoe le e 'ngoe ea tsona. Ha mesebetsi ena e sa sebelisoe, lithakhisa tsa SUPP_S1 le SUPP_S2 li ka khaoloa ho lipotoloho tse kantle 'me tsa hokela ho VPNIN ho kenya kapa ho tloheloa ho phaphamala.
Liphetho tsa Phatlalatso ea Mofuta oa PSE
PD702x0 le PD701x0 ICs li fana ka lits'oants'o tse bulehileng tse bonts'ang mofuta oa PSE ka mokhoa oa eona oa ho khetholla. Sehlahisoa se boemong bo phahameng ba ho itšireletsa ho fihlela sesebelisoa sa ho itšehla thajana se tloha ho Soft Start Current Limit mode ho ea ho mokhoa o tloaelehileng oa ts'ebetso. Joale e tla boleloa e le tlaase, ho itšetlehile ka mokhoa oa ho arola o ileng oa hlokomeloa. Kamora ho tiisa, tlhahiso ea lifolakha e fetohela fatše e nang le sink ea hajoale ea 5 mA. Lipontšo tsa tlhahiso ea lifolakha li khutlela boemong bo phahameng ba impedance ha VPPVPNIN voltage oela ka tlas'a ho itšehla thajana ha ho tima. Lifolakha li thusa moqapi oa PD ho sebetsa le folakha e amanang le kopo. Bakeng sa matla a mang le a mang a bonoang, lifolakha tsohle tse tlase tsa matla le tsona lia tiisetsoa (IE AT_FLAG e tiisitsoe boemo ba AT le maemo ohle a matla a kaholimo ho AT). Boemo ba matla bo teng bo hlalositsoe ho Lethathamo la 2. Joalokaha ho boletsoe tafoleng, PD e bala ketsahalo ea menoana ea lihlopha 'me ka palo ea eona e lemoha mofuta oa PSE. SUPP_S1 le SUPP_S2 li nolofalletsa PD ho lemoha PSE e khethehileng ea AT e nang le lihlopha tse peli feela empa e na le matla ka lipara tse 'nè. Ka hona, haeba menoana e 'meli e tsejoa, joale sesebelisoa sa PD samptse tlase tsa SUPP_S1 le SUPP_S2 mme haeba bobeli ba tsona li phahame, joale matla a fanoa ho lipara tse 'ne mme folakha ea 4P_AT e tiisitsoe.
Lethathamo la 5-1. E fumaneha PD Power Level le Flag Pontšo
| Palo ea Menoana ea Sehlopha | SUPP_S1 | SUPP_S2 | PGOOD_ FALAKA |
AT_ FALAKA |
HD_ FALAKA |
4P_AT_ FALAKA |
4P_HD_ FALAKA |
Boemo ba Matla bo fumanehang |
| 1 | X | X | 0 V | Lumela Z | Lumela Z | Lumela Z | Lumela Z | 802.3 AF boemo/ 802.3 AT Mofuta oa 1 boemo |
| 2 | H | L | 0 V | 0 V | Lumela Z | Lumela Z | Lumela Z | 802.3 AT Mofuta oa 2 boemo |
| 2 | L | H | 0 V | 0 V | Lumela Z | Lumela Z | Lumela Z | 802.3 AT Mofuta oa 2 boemo |
| 2 | H | H | 0 V | 0 V | Lumela Z | 0 V | Lumela Z | Boemo ba Dual 802.3 AT Type 2 |
| 3 | L | H | 0 V | 0 V | 0 V | Lumela Z | Lumela Z | Mofuta oa 3 oa HDBaseT |
| 3 | H | L | 0 V | 0 V | 0 V | Lumela Z | Lumela Z | Mofuta oa 3 oa HDBaseT |
| 3 | H | H | 0 V | 0 V | 0 V | 0 V | Lumela Z | Mofuta oa 3 oa HDBaseT |
| 4 | X | X | 0 V | 0 V | 0 V | 0 V | Lumela Z | Boemo ba Dual 802.3 AT Type 2 |
| 5 | X | X | RETS'ELISITSOE LEBAKA | NA | ||||
| 6 | X | X | 0 V | 0 V | 0 V | 0 V | 0 V | Mofuta oa 3 oa mafahla a mafahla a HDBaseT |
Tšireletso ea Mocheso
PD702x0 le PD701x0 ICs li fana ka tšireletso ea mocheso. Li-sensor tse kopaneng tsa mocheso li lekola mocheso o kahare oa sesebelisoa sa ho itšehla thajana le mohloli oa hona joale oa sehlopha. Haeba moeli oa mocheso o feteletseng oa sensor e 'ngoe le e' ngoe o feta, potoloho e fapaneng ea sensor e tla tima.
Ho netefatsa ts'ebetso e se nang mathata, ho bohlokoa ho etsa bonnete ba hore PD IC's pad e pepesitsoeng e behiloe sebakeng sa koporo ho PCB e fanang ka sink e lekaneng ea mocheso.
Litaelo tsa sebopeho sa PCB
Litekanyetso tsa IEEE 802.3at le HDBaseT li totobatsa litlhoko tse itseng tsa ho itšehla thajana tse tlamehang ho finyelloa ke lisebelisoa tsohle tsa PoE. Ho itšehla thajana ho hlalositsoe bonyane 1500 VRMS lipakeng tsa data e kenang le lithapo tsa motlakase, le lets'oao lefe kapa lefe, matla, kapa khokahano ea chassis e ka kopanang le mosebelisi kantle ho ts'ebeliso. Ho FR4 PCB e tloaelehileng, tlhoko ena e khotsofatsoa ka kakaretso ka ho theha mokoallo oa ho itšehla thajana oa bonyane 0.080 inch (2 mm) lipakeng tsa mesaletsa e haufi e hlokang ho aroloa ha 1500 VRMS.
Fana ka moralo oa PCB tlhokomelo e khethehileng ho fana ka mocheso o lekaneng oa ho teba ha pad e pepesitsoeng (VPNOUT). Liphutheloana tsohle tsa Microchip PD IC li sebelisa pad e pepesitsoeng ho fana ka pholiso e futhumetseng ea sephutheloana, 'me ka hona e hloka hore moralo oa PCB o kenyelle sebaka se lekaneng sa koporo se khomaretsoeng ho pad e pepesitsoeng. Bakeng sa liboto tsa multilayer, ho ka sebelisoa li-vias tse tsamaisang sefofane se haufi. Hopola hore pad e pepesitsoeng e hoketsoe ka motlakase VPNIN 'me e tlameha ho aroloa ka motlakase ho tloha VPNOUT.
Ha u sebelisa vias ho fana ka conductivity ea mocheso pakeng tsa lera la sefofane le pad e pepesitsoeng, libarele li tlameha ho ba 12 ms bophara le (moo ho khonehang) li behoe ka mokhoa oa marang-rang. Likoti tsa meqomo li tlameha ho hokeloa kapa ho koaheloa bakeng sa tokollo e nepahetseng ea pente ea solder. Ha ho sebelisoa masoba a nang le litente, sebaka sa ho kenyeletsoa ha maske sa solder se tlameha ho ba kholoanyane ka 4 mils (0.1 mm) ho feta ka barrel.
Bakeng sa mapolanka a le mong kapa a mabeli, sebelisa lisebelisoa tse kholo tsa koporo ka ho toba le pad e pepesitsoeng. Botenya ba koporo ba 2 oz bo ntlafatsa ts'ebetso ea mocheso. Haeba o sebelisa mesaletsa ea koporo e ka tlase ho 2 oz, ho khothaletsoa ho eketsa botenya ka kakaretso ka ho eketsa solder ho latela libaka moo ho loketseng.
Moralo oa PCB o tlameha ho fana ka mesaletsa ea koporo e pharaletseng, e boima bakeng sa lithapo tsa motlakase tse phahameng. PD ea 4-pair, e atolositsoeng ea matla e ka ba le maqhubu a mangata a 2A bakeng sa liteishene tsa VPP le VPN. Melato e jereng hona joale bakeng sa VPP, VPNIN, le VPNOUT e tlameha ho lekanngoa ho fana ka mocheso o tlaase ka ho fetisisa o sebetsang ka nako e phahameng ka ho fetisisa. Bakeng sa mohlalaample, bonyane ba 15 mils bophara 2 oz koporo e amohela ho fihla ho 1.6A hajoale ka ho phahama ho hoholo ha mocheso oa 10 °C. Haeba ho sebelisoa mesaletsa ea koporo e ka tlase ho 2 oz, eketsa bophara ba bonyane ho amohela boholo ba hajoale le ho phahama ho hoholo ha mocheso.
Lipontšo tsa PoE li na le voltagho fihlela ho 57 VDC. Karolo ea ho sebetsa voltage tlameha ho shejoa, 'me likarolo li behoe ka tsela e nepahetseng. Li-resistors tsa Surface Mount ke mohlala o motleampLe: 0402 resistors na le tloaelehileng palo e kahodimodimo ho sebetsa voltagLitlhaloso tsa 50V, athe 0805 resistors hangata e hlalositsoe ho 150V.
Ha e sebelisoa le PD702x0 le PD701x0 ICs, mohanyetsi oa ho lemoha RDET o hokahantsoe feela ho PoE vol.tage fihla ho 12.8V, 'me e khaotsoe ho seng joalo, kahoo e ka ba molumo o tlasetagmofuta oa e (0402).
Hlokomela: Bakeng sa lintlha tse qaqileng tsa litataiso tsa sebopeho, bona Tlhokomeliso ea Kopo ea Microchip AN3533.
Litlhaloso tsa EMI
Ho fokotsa tlhahiso e tsamaisoang le e nang le mahlaseli a kotsi, le ho "roala" li-loops tse ka khonehang tsa fatše, ho kgothaletswa ho beha (kapa ho tlohela litokisetso bakeng sa) filthara ea EMI. Setlhopha sena hangata se beoa lipakeng tsa borokho ba ho lokisa lintho le selaoli sa PoE PD 'me se kenyelletsa mokhoa o tloaelehileng oa ho choke le li-capacitor tse 2 kV tse tloaelehileng, joalo ka ha ho bonts'itsoe setšoantšong se latelang. ExampLe ea ts'ebetsong e sebetsang ea filthara e joalo e fanoe ho PD7211EVB72FW-12 Bukana ea Mosebelisi ea Boto ea Tlhahlobo. Ho example, likarolo tse latelang li sebelisoa sefang:
- Mokhoa o tloaelehileng o bipetsa Pulse pan P0351
- Li-capacitor tsa mokhoa o tloaelehileng Novice pan 1812B682J202NXT
Setšoantšo sa 8-1. Phallo ea Matla ka Mokhoa o Tloaelehileng oa PD70211
Litokomane tsa Litšupiso
Litokomane tsohle tsa Microchip li fumaneha inthaneteng ho www.microchip.com/poe.
- IEEE 802.3at-2015 e tloaelehileng, Karolo ea 33 (DTE Power ka MDI)
- Tlhaloso ea HDBaseT
- Lethathamo la lintlha tsa PD70210/PD70210A/PD70210AL
- Lethathamo la lintlha tsa PD70211
- Lethathamo la lintlha tsa PD70100/PD70200
- Lethathamo la lintlha tsa PD70101/PD70201
- Lethathamo la lintlha tsa PD70224
- Moralo oa AN3410 bakeng sa PD System Surge Immunity PD701xx_PD702xx
- AN3472 Ho Sebelisa Matla a Thuso ho PoE
- AN3471 Ho Rala Mofuta oa 1/2 802.3 kapa HDBaseT Mofuta oa 3 PD Front End Sebelisa PD702x1 le PD701x1 ICs
- AN3533 PD70210(A), PD70211 Tataiso ea Sebopeho sa Sisteme
Nalane ea Phetoho
| Khatiso | Letsatsi | Tlhaloso |
| B | 04/2022 | E latelang ke kakaretso ea liphetoho tse entsoeng tokisong ena: • Lethathamo la 1 le ntlafalitsoeng. • E ntlafalitsoe 7. PCB Layout Guidelines: Ho tlositsoe ho buuoa ka 0603 resistors. E kentse molaetsa. • E ekelitsoe 8. Lintlha tsa EMI. • E ntlafalitsoe 9. Litokomane tsa Reference. |
| A | 06/2020 | Ena ke taba ea pele ea tokomane ena. Ho rala Type1/2 802.3 kapa HDBaseT Type 3 Powered Device Front End Ho Sebelisa PD702x0 le PD701x0 ICs ho ne ho hlalositsoe litokomaneng tse latelang: • AN209: Ho Rala Mofuta oa 1/2 802.3 kapa HDBT Mofuta oa 3 PD Ho Sebelisa PD70210/ PD70210A ICs • AN193: Ho Rala Mofuta oa 1/2 IEEE 802.3at/af Powered Device Front End Sebelisa PD70100/PD70200 |
Microchip Websebaka
Microchip e fana ka tšehetso ea inthaneteng ka rona website at www.microchip.com/. Sena websebaka se sebedisoang ho etsa files le tlhahisoleseding e fumaneha habonolo ho bareki. Tse ling tsa litaba tse fumanehang li kenyelletsa:
- Tšehetso ea Sehlahisoa - Lipampiri tsa data le errata, lintlha tsa kopo le sample mananeo, lisebelisoa tsa moralo, litataiso tsa basebelisi le litokomane tsa tšehetso ea hardware, lintlafatso tsa morao-rao tsa software le li-archived software
- Tšehetso e Akaretsang ea Tekheniki - Lipotso Tse Botsoang Khafetsa (FAQs), likopo tsa tšehetso ea tekheniki, lihlopha tsa lipuisano tsa inthaneteng, lethathamo la litho tsa lenaneo la balekane ba Microchip
- Khoebo ea Microchip - Mokhethoa oa lihlahisoa le litataiso tsa ho odara, likhatiso tsa morao-rao tsa khatiso tsa Microchip, lethathamo la lithupelo le liketsahalo, lethathamo la liofisi tsa thekiso ea Microchip, barekisi le baemeli ba feme.
Ts'ebeletso ea Tsebiso ea Phetoho ea Sehlahisoa
Ts'ebeletso ea tsebiso ea phetoho ea sehlahisoa sa Microchip e thusa ho boloka bareki ba le teng ka lihlahisoa tsa Microchip. Ba ngolisitseng ba tla fumana tsebiso ea lengolo-tsoibila neng kapa neng ha ho na le liphetoho, lintlafatso, lintlafatso kapa liphoso tse amanang le sehlahisoa se itseng sa lelapa kapa sesebelisoa sa ntlafatso sa thahasello.
Ho ngodisa, eya ho www.microchip.com/pcn mme o latele ditaelo tsa ngodiso.
Tšehetso ea Bareki
Basebelisi ba lihlahisoa tsa Microchip ba ka fumana thuso ka likanale tse 'maloa:
- Morekisi kapa Moemedi
- Ofisi ea Thekiso ea Lehae
- Embedded Solutions Engineer (ESE)
- Tšehetso ea tekheniki
Bareki ba lokela ho ikopanya le mofani oa bona oa thepa, moemeli kapa ESE bakeng sa tšehetso. Liofisi tsa thekiso ea lehae le tsona li teng ho thusa bareki. Lethathamo la liofisi tsa thekiso le libaka li kenyelelitsoe tokomaneng ena. Tšehetso ea tekheniki e fumaneha ka ho websebaka ho: www.microchip.com/support
Karolo ea Tšireletso ea Khoutu ea Lisebelisoa tsa Microchip
Hlokomela lintlha tse latelang tsa ts'ireletso ea khoutu ho lisebelisoa tsa Microchip:
- Lihlahisoa tsa Microchip li kopana le litlhaloso tse fumanehang ho Microchip Data Sheet ea tsona.
- Microchip e lumela hore lelapa la eona la lihlahisoa ke le leng la malapa a sireletsehileng ka ho fetisisa a mofuta oa lona 'marakeng kajeno, ha a sebelisoa ka mokhoa o reriloeng le tlas'a maemo a tloaelehileng.
- Ho na le mekhoa e sa tšepahaleng le mohlomong e seng molaong e sebelisoang ho tlola tšobotsi ea ts'ireletso ea khoutu. Mekhoa ena kaofela, ho ea ka tsebo ea rona, e hloka ho sebelisa lihlahisoa tsa Microchip ka mokhoa o kantle ho lintlha tsa ts'ebetso tse fumanehang ho Microchip's Data Sheets. Ho ka etsahala hore ebe motho ea etsang joalo o utsoa thepa ea bohlale.
- Microchip e ikemiselitse ho sebetsa le moreki ea amehileng ka botšepehi ba khoutu ea bona.
- Ha ho Microchip kapa moetsi ofe kapa ofe oa semiconductor ea ka netefatsang ts'ireletso ea khoutu ea bona. Tšireletso ea khoutu ha e bolele hore re tiisa sehlahisoa e le "se ke keng sa robeha."
Tšireletso ea khoutu e lula e fetoha. Rona ba Microchip re ikemiselitse ho tsoela pele ho ntlafatsa likarolo tsa ts'ireletso ea khoutu ea lihlahisoa tsa rona. Boiteko ba ho senya ts'ireletso ea khoutu ea Microchip e kanna ea ba tlolo ea Molao oa Millennium Copyright Act. Haeba liketso tse joalo li lumella phihlello e sa lumelloeng ho software ea hau kapa mosebetsi o mong o nang le litokelo tsa molao, u ka ba le tokelo ea ho qosa bakeng sa phomolo tlasa Molao oo.
Tsebiso ea Molao
Lintlha tse hlahang khatisong ena mabapi le lits'ebetso tsa lisebelisoa le tse ling tse joalo li fanoe molemong oa hau feela 'me li ka nkeloa sebaka ke lintlafatso. Ke boikarabello ba hau ho netefatsa hore kopo ea hau e kopana le litlhaloso tsa hau. MICROCHIP HA E ETSE LITLHAKISO KAPA LITIISETSO TSA MOFUTA OFE kapa O Mong, Ebang E BONAHALA KAPA E BONAHALA, E NGOLOA KAPA MOLOMO, MOLAO KAPA TSE FELENG, TSE Amanang le TSEBISO, HO kenyeletsoa EMPA E SA LEkanyetsoa MAEMO A YONA, BOTHO, BOHLOKO, BOEMO BA HAO. Microchip e hanela melato eohle e hlahang tlhahisoleseling ena le ts'ebeliso ea eona. Tšebeliso ea lisebelisoa tsa Microchip ts'ehetso ea bophelo le/kapa lits'ebetso tsa ts'ireletso e kotsing ea moreki, 'me moreki o lumela ho sireletsa, ho qosa le ho boloka Microchip e se nang kotsi ho tsoa lits'enyehelo tsohle, likopo, lisutu, kapa litšenyehelo tse bakoang ke ts'ebeliso e joalo. Ha ho lilaesense tse fetisoang, ka mokhoa o hlakileng kapa ka tsela e 'ngoe, tlasa litokelo life kapa life tsa thepa ea mahlale a Microchip ntle le ha ho boletsoe ka tsela e ngoe.
Matšoao a khoebo
Lebitso la Microchip le logo, logo ea Microchip, Adaptec, AnyRate, AVR, logo ea AVR, AVR Freaks, Bes Time, Bit Cloud, chip KIT, logo ea chip KIT, Crypto Memory, Crypto RF, ds PIC, Flash Flex, flex PWR, HELDO, IGLOO, Jukebox, Kilo, Kleber, LAN Check, Link MD, maX Stylus, maX Touch, Media LB, mega AVR, Micro semi, Micro semi logo, MOST, MOST logo, MPLAB, Opto Lyzer, PackerTime, PIC, pico Matla, PICSTART, PIC32 logo, Polar Fire, Prochip Designer, QTouch, SAM-BA, Sen Genuity, SpyNIC, SST, SST Logo, SuperFlash, Symmetricom, Sync Server, Tachyon, Temp Trackr, TimeSource, tinyAVR, UNI/O, Vectron , le XMEGA ke matshwao a kgwebo a ngodisitsweng a Microchip Technology Incorporated USA le dinaheng tse ding.
APT, ClockWorks, The Embedded Control Solutions Company, Ether Synch, Flash Tec, Hyper Speed Control, Hyper Light Load, Bintelli MOS, Libero, motor Bench, touch, Powermite 3, Precision Edge, ProASIC, ProASIC Plus, Pro ASIC Plus logo, Quiet-Wire, SmartFusion, Sync World, Timex, Time Cesium, Time Hub, Time Pictra, TimeProvider, Vite, WinPath, le ZL ke matshwao a kgwebo a ngodisitsweng a Microchip Technology Incorporated USA.
Khatiso e Haufi ea Key Key, AKS, Analog-for-the-Digital Age, Any Capacitor, Any In, Any Out, Blue Sky, Body Com, Code Guard, Netefatso ea Crypto, Crypto Automotive, Crypto Companion, Crypto Controller, spiced, dsPICDEM.net , Dynamic Average Matching, DAM, ECAN, Ether GREEN, In-Circuit Serial Programming, ICSP, INI Cnet, Inter-Chip Connectivity, Jitter Blocker, Kleber Net, Kleber Net logo, mem Brain, Mindi, Mi Wi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, Multi TRAK, Net Detach, Omniscient Code Generation, PICDEM, PICDEM.net, PI Chit, PI Tail, Power Smart, Pure Silicon, Matrix, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-IS, SQI, Super Switcher, Super Switcher II, Total Endurance, TSHARC, Tlhahlobo ea USB, Vary Sense, View Span, Wiper Lock, Wireless DNA, le ZENA ke matshwao a kgwebo a Microchip Technology Incorporated USA le dinaheng tse ding.
SQTP ke letšoao la ts'ebeletso la Microchip Technology Incorporated USA
Letšoao la Adaptec, Frequency on Demand, Silicon Storage Technology, le Symmcom ke matšoao a ngolisitsoeng a khoebo a Microchip Technology Inc. linaheng tse ling.
GestIC ke letshwao la kgwebo le ngodisitsweng la Microchip Technology Germany II GmbH & Co. KG, e leng lekala la Microchip Technology Inc., dinaheng tse ding.
Matšoao a mang kaofela a boletsoeng mona ke thepa ea lik'hamphani tse fapaneng.
© 2022, Microchip Technology Incorporated, E hatisitsoeng USA, Litokelo Tsohle Li Sirelelitsoe.
ISBN: 978-1-6683-0205-7
Tsamaiso ea Tsamaiso ea Boleng
Ho fumana leseli mabapi le Tsamaiso ea Tsamaiso ea Boleng ea Microchip, ka kopo etela www.microchip.com/quality.
Lithekiso le Tšebeletso ea Lefatše Lohle
Ofisi ea Khoebo
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Mohala: 480-792-7200
Fax: 480-792-7277
Tšehetso ea tekheniki: www.microchip.com/support
Web Aterese: www.microchip.com
© 2022 Microchip Technology Inc.
le litsi tsa eona Tsebiso ea Kopo
DS00003468B
Litokomane / Lisebelisoa
 |
MICROCHIP AN3468 HDBaseT Type 3 Powered Device Front-End [pdf] Buka ea Mong'a AN3468 HDBaseT Type 3 Powered Device Front-End, AN3468, HDBaseT Type 3 Powered Device Front-End, Powered Device Front-End, Front-End |
