Ithimba lobuchwepheshe likaSlkor livela eNyuvesi yaseTsinghua. NjengeNkampani Kazwelonke Yobuchwepheshe Obuphezulu, iSlkor yathuthukisa amadivayisi kagesi e-silicon carbide kusenesikhathi futhi isikhule yaba yinkampani ehlanganisa izinsizakalo zobuchwepheshe ze-R&D, ukuklama, ukuthengisa, kanye nezicelo. Isiko layo lenkampani libandakanya wonke umuntu, livulekile, futhi lisungula izinto ezintsha.SLKOR"Umkhiqizo uthole ukuqashelwa nodumo emhlabeni jikelele, isabelo semakethe siqhubeka sikhuphuka, futhi uthole izitifiketi ezifaka phakathi i-ISO9001, i-RoHS, i-REACH, kanye ne-California Proposition 65."

I-Slkor inezikhungo ze-R&D eBeijing naseSuzhou, ene-laboratory kanye nendawo yokugcina impahla endlunkulu yayo yaseShenzhen. Imikhiqizo emikhulu ifaka phakathi ama-diode nama-transistors, amadivayisi kagesi, kanye nama-IC okuphatha amandla. Le nkampani ithuthukisa kancane kancane imikhiqizo emisha efana nezinzwa ze-Hall, ama-ADC, ama-BMS, ama-optocouplers asheshayo, kanye namakristalu angasebenzi. Lokhu kusetshenziswa ezimbonini ezifana nama-smartphone, ama-laptop, amarobhothi, amathuluzi kagesi, izimoto ezixhunyiwe, imikhiqizo yedijithali ye-3C, kanye ne-Internet of Things, isebenzisana nabalingani abangaphezu kwezinkulungwane eziyishumi emhlabeni jikelele!

Iwebhusayithi esemthethweni ye-Slkor ithuthukiswe yaba yipulatifomu yokufunda nokushintshana ngaphakathi kwemboni ye-semiconductor, okudala uhlelo lwezimboni endaweni ye-inthanethi ukuze kusetshenziswe intuthuko yokusebenza kwenkampani. Umbono wenkampani ukuba "uMholi we-Semiconductor" ngeminyaka engamashumi amathathu yomzamo ongapheli wozakwabo!

1.1 Igama: Isixazululo Sesekhethi Yesicelo se-Slkor SL4139 Driver Chip

1.2 Izinhlelo zokusebenza:
Ama-elekthronikhi ezimoto, izinhlelo zokuzulazula ze-GPS, Izidlali Ze-Multimedia Eziphathekayo (i-PMP), amadivayisi aphathwayo, abashayeli bamandla aqhubekayo, izibani zokuhlobisa.

2. Iphakheji: I-chip isebenzisa iphakheji encane ye-SOT23-5.

2.1 Izici zomkhiqizo

I-SL4139 iyi-converter ye-DC/DC boost eyenzelwe ukuhlinzeka ngogesi we-drive oqhubekayo noqondile wama-LED amaningi.
Njengoba imvamisa yokushintsha engaguquki ye-1MHz, i-SL4139 ingasetshenziswa nama-capacitor amancane e-ceramic angaphandle kanye nama-inductor. I-current elungisekayo, esethwe yi-resistor yangaphandle i-R1, ivumela i-SL4139 ukuthi ishayele ama-LED amaningana axhunywe ochungechungeni. I-SL4139 ifanelekela ukushayela ama-LED ohlobo olufanayo, angakwazi ukushayela ama-LED amhlophe afinyelela ku-9 ochungechungeni noma ukuphatha i-voltage ephezulu yokushayela engu-32V.

Ukukhanya kwe-LED kungalungiswa kusetshenziswa i-DC voltage, isignali ye-logic, noma isignali ye-Pulse Width Modulation (PWM). Iphini yokulawula i-Shutdown (SHDN) ivumela idivayisi ukuthi isebenze kwimodi yokuvala ene-quiescent current ephansi kakhulu.

2.2 I-voltage ephezulu yokushayela: 32V; Ukuvikelwa kwe-overvoltage ye-LED evulekile; Ukusebenza kahle kokuguqulwa kwamandla okuphezulu: 90%.

Imvamisa eqondile engu-3.0 1MHz enomsindo ophansi.

3.1 Ugesi wokuvala < 10uA.

3.2 Umkhawulo we-Undervoltage Lockout (UVLO): 3.3V.

3.3 Ububanzi bokushisa bokusebenza: -40℃ kuya ku-+85℃.

4. Isekethe Yesicelo Somshayeli We-LED Omhlophe we-Slkor SL4139

5. Isimiso Sokusebenza

5.1 Amandla anikezwa ngesixhumi se-Kinghelm (KH) esingu-16-pin Type-C, esikhipha i-5V ku-SL4139. Ngemva kokukhulisa i-DC/DC yi-SL4139, kunikezwa ugesi we-LED drive ongaguquki ukuze kukhanyise ama-LED. I-SL4139 iyi-converter ye-fixed-frequency (1MHz), enomsindo ophansi, ekhuthaza ugesi enikeza ugesi ongaguquki onomugqa omuhle kakhulu kanye nokulawulwa komthwalo. Idivayisi isebenzisa i-switch ye-NMOS enamandla aphezulu phakathi kwe-SW pin ne-GND ukushayela i-inductor. Uma i-switch ye-NMOS icishiwe, amandla agcinwe ku-inductor akhishwa aye emthwalweni nge-Schottky diode. Umjikelezo womsebenzi we-switch ye-NMOS ulungiswa ngaphakathi futhi ulawulwa ngokusekelwe kugesi wempendulo ku-FB pin, ekugcineni kulawula ugesi we-FB pin ku-0.3V engaguquki. Ugesi ogeleza ku-LED ulingana ngokuphambene nenani le-resistor (I = 0.3V / R1).

5.2 I-SL4139 ifaka isekethe yokuvikela ukushisa ngokweqile. Lapho izinga lokushisa lokuhlangana lidlula i-150℃, idivayisi iyayeka ukusebenza ngokuzenzakalelayo kuze kube yilapho izinga lokushisa lehla liye ku-130℃, lapho ukusebenza okuvamile kuqala khona.

5.3 Uma kwenzeka isekethe evulekile ye-LED, iluphu yokulawula impendulo iyavuleka, okwenza i-voltage yokuphuma ikhule njalo. Uma i-voltage yokuphuma idlula i-37V, isekethe yokuvikela yangaphakathi iyasebenza, ibeke idivayisi kwimodi yokusebenza ephephile enamandla aphansi.

5.4 I-SL4139 ingasetshenziswa ezinhlelweni zokuzulazula ze-GPS, kubadlali be-multimedia abaphathwayo, kumadivayisi aphathwa ngesandla, ekukhanyeni, kubashayeli bamanje abaqhubekayo, njll.

5.5 Ukuze uthole ireferensi ethile yesicelo, sicela ubheke ibhodi le-DEMO le-Ring Light ngezansi:

6. Iziphakamiso ezivela ku-Slkor Applications for Engineers:

I-SL4139 iyisilawuli sokushintsha imvamisa ephezulu. Ukuze kuncishiswe i-EMI, i-ripple, nomsindo, imikhondo ye-PCB ethwala imikhondo yokushintsha imvamisa ephezulu kumele ibekwe ngokucophelela. Imigqa egqamile esithombeni esingenhla ikhombisa imizila yemikhondo yokushintsha imvamisa ephezulu. Zonke lezi mikhondo kufanele zibe mfushane futhi zibanzi ukuze kuncishiswe ukugeleza kanye nokumelana kwezinambuzane. Esifanekisweni esingezansi, i-Loop ① yindlela yamanje lapho iswishi yangaphakathi ye-SL4139 ivaliwe. I-Loop ② yindlela yamanje lapho iswishi yangaphakathi ye-SL4139 ivuliwe. Izindawo zazo zombili izihibe kufanele zigcinwe zincane ngangokunokwenzeka.

7. Ulwazi lwe-BOM (Bill of Materials) lwebhodi le-DEMO le-Slkor LED Driver Chip SL4139 lulandelayo:

I-Slkor Semiconductor, ukuze kube lula kumakhasimende nabasabalalisi ekusebenziseni imikhiqizo emisha yomkhiqizo we-"slkor" nokuqinisa izinsizakalo zobuchwepheshe ezisekela amakhasimende, inikeza ulwazi oluningiliziwe lomkhiqizo. Sicela uxhumane nabasebenzi bethu!