Thawj TPS23861PWR Hloov TSSOP-28 Kev ua si nawv Integrated Circuit Court Chip IC Electronic Cheebtsam

luv luv piav qhia:

TPS23861 yog ib qho yooj yim-rau-siv, hloov tau, IEEE802.3at PSE tov.Raws li kev xa khoom, nws cia li tswj hwm plaub 802.3at chaw nres nkoj yam tsis tas yuav muaj kev tswj hwm sab nraud.
Lub TPS23861 cia li kuaj pom Powered Devices (PDs) uas muaj daim ntawv kos npe siv tau, txiav txim siab lub zog raws li kev faib tawm thiab siv lub zog.Kev faib tawm ob qhov xwm txheej tau txais kev txhawb nqa rau hom-2 PDs.TPS23861 txhawb nqa DC kev txiav tawm thiab sab nraud FET architecture tso cai rau cov neeg tsim khoom sib npaug, kev ua haujlwm zoo thiab cov nqi daws teeb meem.

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Product Detail

Khoom cim npe

Internal voltage regulator tso cai rau ib leeg-rail khiav lag luam.Kev txhim kho tau ua rau HRPWM tso cai rau kev tswj hwm ob sab (frequency modulation).Analog piv nrog 10-ntsis cov ntaub ntawv tau muab ntxiv thiab tuaj yeem xa ncaj qha los tswj PWM cov zis.ADC hloov los ntawm 0 mus rau 3.3-V tsau tag nrho cov nplai thiab txhawb nqa piv-metric VREFHI / VREFLO cov lus qhia.ADC interface tau ua kom zoo rau cov nyiaj siv ua haujlwm qis thiab latency.

Yam khoom

HOM	Kev piav qhia
Qeb	Integrated Circuits (ICs) PMIC - Fais Fab Tshaj Ethernet (PoE) Cov Tswj
Mfr	Texas Instruments
Series	-
Pob	Daim kab xev & Reel (TR) Daim kab xev (CT) Digi-Reel®
Tshooj xwm txheej	Active
Hom	Controller (PSE)
Tus naj npawb ntawm Channel	4
Lub zog - Max	25.5 wb
Internal Switch(s)	No
Auxiliary Sense	No
Cov qauv	802.3at (PoE+), 802.3af (PoE)
Voltage - Khoom siv	44V ~ 57V
Tam sim no - Khoom siv	3.5mA ua
Ua haujlwm kub	-40 ° C ~ 85 ° C
Mounting Hom	Nto Mount
Pob / Case	28-TSSOP (0.173", 4.40mm Dav)
Cov Khoom Muag Khoom Pob	28- TSO
Base Product Number	TIAB SA 23861

PoE & PSE

PoE tseem hu ua Power over Ethernet (PoL, Power over LAN) lossis Active Ethernet, lossis qee zaum yooj yim li Power over Ethernet.
Cov ntawv thov siv rau PoE suav nrog kev saib xyuas kev nyab xeeb, IP xov tooj, thiab cov ntsiab lus nkag wireless (WAPs).Tus tswv tsev lossis cov khoom siv nruab nrab siv los muab lub zog yog cov khoom siv hluav taws xob (PSE).Cov khoom thauj khoom txuas nrog Ethernet connector yog cov khoom siv hluav taws xob (PD).
Cov txheej txheem PoE rau kev tswj lub zog thauj khoom nruab nrab ntawm PSE thiab PD yog txhais los ntawm IEEE 802.3bt tus qauv.Yuav tsum muaj lub tshuab hloov pauv ntawm Ethernet host chaw nres nkoj, midspan, thiab hub qhov chaw coj cov ntaub ntawv mus rau hauv cable.Tsis tas li ntawd, DC voltage tuaj yeem siv rau hauv nruab nrab kais ntawm lub transformer yam tsis muaj kev cuam tshuam cov ntaub ntawv teeb liab.Raws li nrog rau txhua txoj kab xaim hluav taws xob, cov thev naus laus zis no siv cov hluav taws xob muaj zog (kwv yees li 50V) kom tsis txhob muaj qhov tam sim no qis thiab txo qhov cuam tshuam ntawm IR voltage poob hauv kab, yog li tswj xyuas lub zog xa mus rau lub nra.Tus qauv 2-xaim khub PoE xa kwv yees li 13W rau Chav Kawm 1 PDs thiab kwv yees li 25.5W rau Chav Kawm 2 PDs, thaum tus qauv 4-xaim khub PoE yuav tuaj yeem xa kwv yees li 51W rau Chav Kawm 3 PDs thiab kwv yees li 71W rau Chav Kawm 4 PDs.

Cov qauv

Peb tus qauv ntawm PoE fais fab mov
1. EEE802.3af Main fais fab mov tsis.
DC voltage ntawm 44 thiab 57V, tus nqi raug yog 48V.Kev khiav hauj lwm tam sim no yog 10 txog 350mA, raug tso tawm fais fab: 15.4W.Overload nrhiav tam sim no yog 350 txog 500mA.Nyob rau hauv qhov tsis muaj kev thauj khoom, qhov siab tshaj plaws tam sim no yog 5mA.plaub theem ntawm kev thov hluav taws xob hluav taws xob los ntawm 3.84 txog 12.95W yog muab rau cov khoom siv PD.
IEEE 802.3af kev faib tawm parameters.
Cov khoom siv Class0 xav tau lub zog ua haujlwm siab tshaj plaws ntawm 0 txog 12.95W.
Cov khoom siv Class1 xav tau lub zog ua haujlwm siab tshaj plaws ntawm 0 txog 3.84W.
Cov khoom siv Class2 xav tau lub zog ua haujlwm ntawm 3.85W thiab 6.49W.
Cov khoom siv Class3 xav tau lub zog ntau ntawm 6.5 txog 12.95W.
2. IEEE802.3at (PoE+) Cov khoom siv hluav taws xob tseem ceeb.
DC voltage yog nruab nrab ntawm 50 thiab 57V, tus nqi raug yog 50V.Cov kev khiav hauj lwm tam sim no yog 10 txog 600mA, raug tso tawm fais fab: yog 30W.powered device PD txhawb nqa Class4 kev faib tawm.

IEEE 802.3bt (PoE ++)

802.3bt specification qhia plaub lub zog tshiab PD kev faib tawm (Class), nqa tag nrho cov chav kawm ib leeg rau cuaj.Class5 txog 8 yog tshiab rau tus qauv PoE thiab txhais ua PD zog theem ntawm 40.0W txog 71W.

802.3bt rov qab tau tshaj 802.3at thiab 802.3af.Lub zog qis 802.3at lossis 802.3af PD tuaj yeem txuas nrog lub zog siab dua 802.3bt PSE yam tsis muaj teeb meem.Thiab thaum lub zog siab dua 802.3bt PD txuas nrog lub zog qis 802.3at lossis 802.3af PSE, PDs tsuas yog yuav tsum muaj peev xwm ua haujlwm ntawm lawv lub xeev qis zog, uas yog hu ua "degradation".

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