I-LINEAR TECHNOLOGY LT1913EMSE Isilawuli Sokushintsha Isinyathelo-phansi

Ulwazi Lomkhiqizo

Igama Lomkhiqizo	I-LT1913EMSE 3.5A,25V Isilawuli sokushintshela phansi esine-SYNC Umsebenzi
Incazelo	Isekethe ye-Demonstration 1316 iyi-monolithic stepdown DC/DC isilawuli esishintshayo esine-LT1913. I-LT1913 ingaba kuvumelaniswe ngaphezu kuka-250 KHz kuya ku-2 MHz ububanzi. Ibhodi ledemo li yakhelwe okukhiphayo okungu-5V kusuka kokungu-6.5V kuya ku-25V okokufaka. Okokufaka okubanzi Uhlu lwe-LT1913 luvumela imithombo ehlukahlukene yokufaka. Okujwayelekile imithombo amabhethri ezimoto, ama-adaptha odongeni nezimboni izimpahla.
Izimpawu Zokuhweba Ezibhalisiwe	I-LTC ne-LT yizimpawu zokuthengisa ezibhalisiwe ze-Linear Technology Inhlangano. I-ThinSOT ne-PowerPath yizimpawu zokuthengisa ze-Linear Inkampani yezobuchwepheshe.
Isifinyezo sokusebenza	Ubuncane Bokufaka Ivolumutage: 6.5v Ubuningi bokufaka Umqtage: 25v Okukhipha UmqtagI-VOUT: 5V +/- 4% Okukhiphayo Okuphezulu Kwamanje: 3.5A Imvamisa Yokushintsha Okujwayelekile: 800kHz

Imiyalo yokusetshenziswa komkhiqizo

1. 1. Beka i-JP1 endaweni ye-RUN.
   2. Uma ucisha ugesi, xhuma isiphakeli samandla okokufaka ku-Vin ne-GND.
   3. Vula amandla kokokufaka.
   4. Hlola ivolumu efanele yokuphumayotage.

Qaphela: Uma kungekho okukhiphayo, nqamula umthwalo okwesikhashana ukuze uqiniseke ukuthi umthwalo awusethwanga kakhulu.

1. Once okukhiphayo voltagi-e iyasungulwa, lungisa umthwalo ngaphakathi kwebanga lokusebenza bese ubheka ivolumu yokuphumayotage regulation, ripple voltage, ukusebenza kahle, neminye imingcele.
2. Iwashi langaphandle lingangezwa kuphinikhodi SYNC lapho kusetshenziswa umsebenzi we-SYNC. Bheka isigaba sokuvumelanisa kumininingwane yedatha.

Umfanekiso 1. Ukusetha Okufanelekile Kwezisetshenziswa Zokulinganisa

Umfanekiso 2. Ukulinganisa Okokufaka noma I-Ripple Yokukhipha

Umfanekiso 3. Phansi Kwebhodi Ledemo Ngesekhethi Yokuzikhethela kanye Nokusikwa Kokulandelela Kokufaka

DESCRIPTION

Isekethe ye-Demonstration 1316 iyisilawuli esishintshayo se-monolithic DC/DC esifaka i-LT1913.
I-LT1913 ingavunyelaniswa ngobubanzi obungu-250 KHz ukuya ku-2 MHz. Ibhodi ledemo yakhelwe ukuphuma kwe-5V kusuka kokufakiwe okungu-6.5V kuya ku-25V. Uhlu olubanzi lokufakwayo lwe-LT1913 luvumela imithombo ehlukahlukene yokufaka. Imithombo ejwayelekile amabhethri ezimoto, ama-adaptha odongeni kanye nempahla yezimboni.

Isihlungi se-EMC esingazikhethela kokokufaka sinikezwa phansi ebhodini, esinciphisa kakhulu umsindo we-EMI ohlangothini lokokufaka. Amakhasimende angasebenzisa le sekhethi yokuzikhethela ngokusika umkhondo wokufakwayo phansi ebhodini futhi afake izingxenye. Uhlelo lwamanje lokulawula imodi ludala impendulo yesikhashana esheshayo kanye nokuzinza okuhle kwe-loop.
Ukushayela kwesango lokushintsha kwangaphakathi kukhushulelwe ku-voltage ukuthi iphakeme kune-Vin ukuze kuqinisekiswe ukugcwala kwesishintshi. I-LT1913's integrated boost diode inciphisa ukubalwa kwezingxenye. Iphinikhodi ye-RUN/SS ingasetshenziswa ukusetha ingxenye ku-micropower
imodi yokuvala shaqa, yehlisa ukunikezwa kwamandla kube ngaphansi kuka-1uA. Iphinikhodi ye-RUN/SS ingasetshenziswa futhi ukuhlela isiqalo esithambile. Kule modi, iphinikhodi ye-RUN/SS ishayelwa ngesihlungi se-RC sangaphandle ukuze kwakhe ivolumutageramp kuleli phini. Umsebenzi wokuqalisa othambile wehlisa ukukhuphuka kwamanje okokufaka phakathi nokuqaliswa.

Idatha ye-LT1913 inikeza incazelo ephelele yengxenye, ukusebenza kanye nolwazi lohlelo.
Idatha yedatha kufanele ifundwe kanye nalo mhlahlandlela wokuqala osheshayo wesekethe yedemo 1316.

Qaphela: Kungcono ukugxilisa iphinikhodi SYNC uma umsebenzi we-SYNC ungasetshenziswa.
Idizayini files zaleli bhodi lesifunda ziyatholakala.
Shayela imboni ye-LTC.

Isifinyezo Sokusebenza Sesilawuli Sokushintsha Okusuka phansi ( TA = 25oC )

I-PARAMETER FOR IMALI UMLAWULI	ISIMO	VALUE
Ubuncane Bokufaka Ivolumutage		6.5V
Ubuningi bokufaka Umqtage		25V
Okukhipha Umqtage VPHUMA		5V +/- 4%
Okukhiphayo Okuphezulu Kwamanje		3.5A
Imvamisa Yokushintsha Okujwayelekile		800kHz

INQUBO YOKUQALA NGOKUSHESHA

Isekethe ye-Demonstration 1316 kulula ukuyimisa ukuze ihlole ukusebenza kwe-LT1913. Bheka uMdwebo 1 ukuze uthole ukusethwa okufanele kwemishini yokulinganisa bese ulandela inqubo engezansi:

QAPHELA. Uma ukala ivolumu yokufaka noma yokuphumayotage ripple, ukunakekelwa kufanele kuthathwe ukugwema umthofu omude we-oscilloscopeprobe. Linganisa ivolumu yokufaka noma yokuphumayotage ripple ngokuthinta ithiphu ye-probe ngqo kuwo wonke amatheminali e-Vin noma e-Vout kanye ne-GND. Bheka Umfanekiso 2 ukuze uthole inqubo efanele ye-scope probe.

UMYALELO

1. Beka i-JP1 endaweni ye-RUN.
2. Uma ucisha ugesi, xhuma isiphakeli samandla okokufaka ku-Vin ne-GND.
3. Vula amandla kokokufaka.
4. Hlola ivolumu efanele yokuphumayotage.
   QAPHELA. Uma kungekho okukhiphayo, nqamula umthwalo okwesikhashana ukuze uqiniseke ukuthi umthwalo awusethwanga kakhulu.
5. Once okukhiphayo voltagi-e iyasungulwa, lungisa umthwalo ngaphakathi kwebanga lokusebenza bese ubheka ivolumu yokuphumayotage regulation, ripple voltage, ukusebenza kahle kanye neminye imingcele.
6. Iwashi langaphandle lingangezwa kuphinikhodi SYNC lapho kusetshenziswa umsebenzi we-SYNC. Bheka isigaba sokuvumelanisa kumininingwane yedatha.

AMANOTHI: NGAPHANDLE KOKUSHIWO OKUNYE

1. ZONKE AMA-RESISTors AKU-OHMS, 0402.
   WONKE AMA-CAPACITOR ASE-MICROFARADS, 0402.
2. FAKA I-SHUNT KU-JP1 PINS 182.

Amadokhumenti / Izinsiza

I-LINEAR TECHNOLOGY LT1913EMSE Isilawuli Sokushintsha Isinyathelo-phansi [pdf] Umhlahlandlela Womsebenzisi I-LT1913EMSE Isilawuli Sokushintsha Isinyathelo Esiya Phansi, LT1913EMSE, Isilawuli Sokushintsha Isinyathelo Esiya Phansi, Isilawuli Sokushintsha, Isilawuli

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