MAX5974DETE+T Ukutshintsha iziLawuli eziSebenzayo-eziQinisekileyo, eziSasazwe-Spectrum, Izilawuli ze-PWM zangoku
♠ Inkcazo yeMveliso
| Uphawu lweMveliso | Ixabiso lophawu |
| Umenzi: | UMaxim Integrated |
| Udidi lweMveliso: | Ukutshintsha abalawuli |
| RoHS: | Iinkcukacha |
| I-Topology: | - |
| Inani leZiphumo: | 1 Isiphumo |
| Ukutshintsha iFrequency: | 600 kHz |
| Umjikelo woMsebenzi - Ubuninzi: | 82% |
| Igalelo lamandla ombane: | 10.5 V |
| Umbane ophumayo: | - |
| Imveliso yangoku: | 1 mA |
| Ubuncinci bobushushu bokusebenza: | - 40 C |
| Obona bushushu bokusebenza: | + 85 C |
| Isimbo sokuNqamisa: | SMD/SMT |
| Umqulu / Ityala: | TQFN-16 |
| Ukupakishwa: | I-Reel |
| Ukupakishwa: | Sika iTape |
| Ukupakishwa: | MouseReel |
| Uphawu: | UMaxim Integrated |
| Ixesha Lokuwa: | 14 ns |
| Ubonelelo oluSebenzayo lwangoku: | 1.8 mA |
| Umbane woNikezelo oSebenzayo: | 12 V ukuya ku-21 V |
| Uhlobo lweMveliso: | Ukutshintsha abalawuli |
| Ixesha lokunyuka: | 27ns |
| Uthotho: | MAX5974 |
| Ubungakanani bePakethi yoMzi-mveliso: | 2500 |
| Uluhlu olungaphantsi: | I-PMIC - ii-ICs zoLawulo lwaMandla |
| Uhlobo: | Abalawuli bePWM beMode yangoku |
| Inxalenye # Izifakelo: | MAX5974 |
♠I-Active-Clamped, Spread-Spectrum, i-PWM yesiLawuli seMowudi yangoku
I-MAX5974_ ibonelela ngolawulo lwe-wide-input-voltage, i-active-clamped, i-PWM yemo yangoku, abaguquli phambili kwi-Power-over-Ethernet (PoE) powered device (PD) izicelo. I-MAX5974A/MAX5974C ifaneleka kakuhle kwi-universal okanye i-telecom input range, ngelixa i-MAX5974B/ MAX5974D iphinda ifake i-voltage ephantsi yegalelo ukuya kwi-10.5V.
Izixhobo zibandakanya iimpawu ezininzi zokuphucula ukusebenza kakuhle konikezelo. Umqhubi we-AUX uphinda asebenzise irenti ye-magnetizing cur endaweni yokuyichitha kwisekethe ye-clamp ye-dissipative. Ixesha lokufa elicwangcisiweyo phakathi kwe-AUX kunye nomqhubi oyintloko uvumela ukutshintshwa kwe-zero-voltage (ZVS). Ngaphantsi kweemeko zomthwalo wokukhanya, izixhobo zinciphisa ukutshintshwa kwe-fre quency (i-frequency foldback) ukunciphisa ilahleko zokutshintsha.
I-MAX5974A/MAX5974B ibonisa ukujikeleza okukodwa ukufezekisa ummiselo wemveliso ngaphandle kokusebenzisa i-optocoupler, ngelixa i-MAX5974C/MAX5974D isebenzisa indlela yempendulo ye-optocoupler. I-amplifier yephutha yangaphakathi kunye ne-reference ye-1% iluncedo kakhulu kwi-design nonisolated, ukuphelisa imfuno yomlawuli wangaphandle we-shunt.
Izixhobo zibonakalisa i-fid-forward ubuninzi bomjikelo wokubamba umjikelo owona mgangatho uphezulu we-volt ye-volt ngexesha leemeko zexeshana ezizimeleyo kumbane wombane, ovumela ukusetyenziswa kombane we-MOSFET onamandla ombane wokuqhekeka. I-programmable frequency dithering feature ibonelela nge-EMI ephantsi, i-spread-spectrum operation.
I-MAX5974_ ifumaneka kwi-16-pin TQFN-EP yobudala bepakethe kwaye ilinganiswe ukusebenza ngaphezu kwe -40 ° C ukuya + 85 ° C kunye -40 ° C ukuya + 125 ° C iqondo lokushisa.
● Ulawulo lweNdlela ePhakamileyo yangoku, Umlawuli we-PWM oSebenzayo oBanjelwe Phambili
● Ummiselo Ngaphandle kwe-Optocoupler (MAX5974A/ MAX5974B)
● Ngaphakathi 1% I-Error Amplifier
● 100kHz ukuya 600kHz Programmable ±8% Ukutshintshela Frequency, Ungqamaniso Ukuya kwi-1.2MHz
● Programmable Frequency Dithering for Low-EMI, Spread-Spectrum Operation
● Ixesha lokuFa eliCwangcisiweyo, i-PWM Soft-Start, iMbuyekezo ye-Slope yangoku
● Programmable Feed-Forward Maximum Duty-Cycle Clamp, 80% Maximum Limit
● I-Frequency Foldback ye-High-Efficiency Light-Load Operation
● I-Bootstrap yangaphakathi ye-UVLO ene-Hysteresis enkulu
● 100μA (uhlobo) Ubonelelo lweNqalo lwangoku
● Umjikelo oKhawulezayo-ngoMjikelo weNcopho yangoku-uMda, i-35ns yokuLibazisa okuQhelekileyo
● 115ns Current-Sense Internal Leading-Edge Blanking
● Imveliso yoKhuselo lweSekethe eMfutshane ngeMowudi yeHiccup
● Ukubuyisela umva uMda wangoku ukuNqanda uShishino lwesiguquli ngenxa yokuBuyiswa kwangoku
● I-18V ye-Zener Clamp yangaphakathi kwi-Supply Input
● 3mm x 3mm, Lead-Free, 16-Pin TQFN-EP
● I-PoE IEEE® 802.3af/at Powered Devices
● High-Power PD (Ngaphaya kwe-802.3af/kuMgangatho)
● I-Active-Clamped Forward DC-DC Converters
● Iifowuni ze-IP
● IiNdawo zoFikelelo ezingenazingcingo
● Iikhamera zoKhuseleko
