I-TPS23861PWR Yangempela Shintsha I-TSSOP-28 Sport Integrated Circuit Chip IC Electronic Components

incazelo emfushane:

I-TPS23861 iyisixazululo esisebenziseka kalula, esivumelana nezimo, se-IEEE802.3at PSE.Njengoba ithunyelwe, iphatha ngokuzenzakalelayo izimbobo ezine ze-802.3at ngaphandle kwesidingo sokulawula kwangaphandle.
I-TPS23861 ithola ngokuzenzakalelayo Amadivayisi Anamandla (ama-PD) anesiginesha evumelekile, inquma izidingo zamandla ngokuya ngezigaba futhi isebenzisa amandla.Ukuhlukaniswa kwemicimbi emibili kusekelwa uhlobo-2 PD.I-TPS23861 isekela ukunqanyulwa kwe-DC kanye nezakhiwo ze-FET zangaphandle zivumela abaklami ukuthi balinganisele usayizi, ukusebenza kahle kanye nezidingo zezindleko zesixazululo.

Thumela i-imeyili kithi Landa i-Datesheet

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

I-voltage regulator yangaphakathi ivumela ukusebenza kwesitimela esisodwa.Izithuthukisi zenziwe ku-HRPWM ukuze kuvunyelwe ukulawula okukabili (i-frequency modulation).Iziqhathaniso ze-analogi ezinezithenjwa zangaphakathi ze-10-bit zengeziwe futhi zingahanjiswa ngokuqondile ukuze kulawulwe imiphumela ye-PWM.I-ADC iguqula isuka ku-0 iye ku-3.3-V yebanga lesilinganiso esigcwele esigxilile futhi isekela amareferensi we-ratio-metric VREFHI/VREFLO.Isixhumi esibonakalayo se-ADC senzelwe i-overhead ephansi nokubambezeleka.

Izimfanelo Zomkhiqizo

UHLOBO	DESCRIPTION
Isigaba	Izifunda Ezihlanganisiwe (ICs) PMIC - Power Over Ethernet (PoE) Controllers
Mfr	Texas Instruments
Uchungechunge	-
Iphakheji	I-Tape & Reel (TR) Cut Tape (CT) I-Digi-Reel®
Isimo Sengxenye	Iyasebenza
Uhlobo	Isilawuli (PSE)
Inombolo Yeziteshi	4
Amandla - Max	25.5 W
I(izi)shitshi zangaphakathi	No
I-Axiliary Sense	No
Amazinga	802.3at (PoE+), 802.3af (PoE)
I-Voltage - Ukunikezwa	44V ~ 57V
Okwamanje - Ukunikezela	3.5mA
Izinga Lokushisa Lokusebenza	-40°C ~ 85°C
Uhlobo Lokukhweza	INtaba Engaphezulu
Iphakheji / Ikesi	28-TSSOP (0.173", 4.40mm Ububanzi)
Iphakheji Yedivayisi Yomhlinzeki	28-TSSOP
Inombolo Yomkhiqizo Eyisisekelo	I-TPS23861

I-PoE & PSE

I-PoE yaziwa nangokuthi Amandla phezu kwe-Ethernet (PoL, Power over LAN) noma i-Active Ethernet, noma ngezinye izikhathi nje ngokuthi Amandla phezu kwe-Ethernet.
Izinhlelo zokusebenza ezijwayelekile ze-PoE zifaka ukuqapha kwezokuphepha, i-IP telephony, kanye nezindawo zokufinyelela okungenantambo (WAPs).Umsingathi noma idivayisi emaphakathi ne-span esetshenziselwa ukunikeza amandla okokusebenza okuphakela amandla (PSE).Umthwalo oxhunywe kusixhumi se-Ethernet idivayisi yokuphakela amandla (PD).
Iphrothokholi ye-PoE yokulawula amandla omthwalo phakathi kwe-PSE ne-PD ichazwa yizinga le-IEEE 802.3bt.I-transformer iyadingeka embobeni yokusingatha ye-Ethernet, i-midspan, nezindawo zehabhu ukuletha idatha kukhebuli.Ngaphezu kwalokho, i-voltage ye-DC ingasetshenziswa empompini ophakathi nendawo we-transformer ngaphandle kokuthinta isignali yedatha.Njenganoma yimuphi ulayini wokudluliswa kwamandla, lobu buchwepheshe busebenzisa amandla kagesi aphezulu uma kuqhathaniswa (cishe ama-50V) ukuze kugcinwe amandla amanje aphansi futhi kunciphise umphumela wokwehla kwamandla kagesi e-IR kulayini, ngaleyo ndlela kugcinwe ukulethwa kwamandla emgqeni.I-PoE evamile yezintambo ezingu-2 iletha cishe u-13W kuma-PD Ekilasi 1 futhi cishe angu-25.5W kuma-PD Ekilasi 2, kuyilapho i-PoE evamile yezintambo ezingu-4 izokwazi ukuletha cishe u-51W kuma-PD Ekilasi 3 kanye nama-PD acishe abe ngu-71W Ekilasini lesi-4.

Amazinga

Amazinga amathathu okunikezwa kwamandla kwe-PoE
1. EEE802.3af Amapharamitha wokuphakelwa kwamandla amakhulu.
I-DC voltage phakathi kuka-44 no-57V, inani elijwayelekile lingu-48V.ukusebenza kwamanje okujwayelekile kungu-10 kuye ku-350mA, amandla okukhiphayo ajwayelekile: 15.4W.ukutholwa kokugcwala ngokweqile kungu-350 kuya ku-500mA.ngaphansi kwezimo zokungalayishi, inani eliphezulu elidingekayo lamanje ngu-5mA.Amaleveli Ekilasi amane ezicelo zamandla kagesi ukusuka ku-3.84 ukuya ku-12.95W anikezwa amadivayisi e-PD.
IEEE802.3af amapharamitha wokuhlukaniswa.
Amadivayisi e-Class0 adinga amandla amakhulu okusebenza angu-0 kuye ku-12.95W.
Amadivayisi e-Class1 adinga amandla amakhulu okusebenza angu-0 ukuya ku-3.84W.
Amadivayisi e-Class2 adinga amandla okusebenza aphakathi kuka-3.85W no-6.49W.
Amadivayisi e-Class3 adinga ububanzi bamandla obungu-6.5 ukuya ku-12.95W.
2. IEEE802.3at (PoE+) Imingcele yokuphakelwa kwamandla amakhulu.
I-DC voltage iphakathi kuka-50 no-57V, inani elijwayelekile lingu-50V.Ukusebenza kwamanje okujwayelekile kungu-10 kuye ku-600mA, amandla okukhiphayo ajwayelekile: ngu-30W.I-PD yedivayisi enikwe amandla isekela ukuhlukaniswa kwe-Class4.

IEEE802.3bt (PoE++)

Ukucaciswa kwe-802.3bt kwethula izigaba ezine ze-PD zamandla aphezulu (Ikilasi), okuletha inani eliphelele lamakilasi esici esisodwa kuya kweyisishiyagalolunye.I-Class5 kuya ku-8 masha kuzinga le-PoE futhi ihumushela kumazinga wamandla e-PD angu-40.0W kuya ku-71W.

I-802.3bt ibuyela emuva ihambisana ne-802.3at kanye ne-802.3af.Amandla aphansi angu-802.3at noma angu-802.3af PD angaxhunywa kumandla aphezulu angu-802.3bt PSE ngaphandle kwezinkinga.Futhi uma amandla aphakeme angu-802.3bt PD exhunywe kumandla aphansi angu-802.3at noma angu-802.3af PSE, ama-PD adinga nje ukuthi akwazi ukusebenza ezifundeni zawo zamandla aphansi, okubizwa ngokuthi "ukuwohloka".

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