I-LM25118Q1MH/NOPB I-Circuit Ehlanganisiwe Ehlanganisiwe ye-IC REG CTRLR BUCK 20TSSOP Ic Chip LM25118Q1MH/NOPB

1. Ukubhuqa okuhambisanayo

Izinzuzo.

Ukusebenza kahle okuphezulu: ukumelana kwangaphakathi kwe-mos tube kuncane kakhulu futhi ukwehla kwamandla kagesi aku-state kuncane kakhulu kunokwehla kwe-voltage ye-Cosmos eya phambili ye-Schottky diode.

Ukubi.

Ukuzinza okunganele: isidingo sokuklama isifunda sedrayivu, futhi ugweme ishubhu ephezulu nephansi ngesikhathi esifanayo, isifunda siyinkimbinkimbi, okuholela ekuzinzeni okwanele.

2. Imbaza engavumelani

Izinzuzo.

Ukusebenza kahle okuphansi: Ukwehla kwamandla kagesi e-Schottky diode kukhulu, uma kuqhathaniswa nokusetshenziswa kwamandla okukhiqizwa yi-mos tube

Ukubi.

Ukuzinza okuphezulu: ngeke kube khona ukuqhutshwa ngesikhathi esisodwa kwamashubhu aphezulu naphansi.

1: PFM (indlela yokushintsha imvamisa ye-pulse)

Ukushintsha ububanzi be-pulse kuqinisekile, ngokushintsha imvamisa yokuphuma kwe-pulse, i-voltage ephumayo iyasimama.uhlobo lokulawula lunenzuzo yokusebenzisa amandla aphansi ngisho nalapho isetshenziswe isikhathi eside, ikakhulukazi emithwalweni emincane.

2: PWM (Pulse Width Modulation)

Uhlobo lokulawula lwe-PWM lusebenza kahle kakhulu futhi lunomsindo omuhle ophumayo we-voltage nomsindo.

Ukufingqa: Ngokuvamile, umehluko wokusebenza phakathi kweziguquli ze-DC-DC ezinezindlela ezimbili ezihlukene zokuguquguquka, i-PFM ne-PWM, imi kanje.

Imvamisa ye-PWM, indlela yokukhetha umjikelezo womsebenzi we-PFM.Ukulawulwa kohlobo lokuguqulwa kwe-PWM/PFM kwe-PFM emithwalweni emincane nokushintshela ngokuzenzakalelayo ekulawuleni i-PWM emithwalweni esindayo.

3.

Uyini umehluko phakathi kwe-synchronous boost ICs nama-ICs asynchronous boost?

Umehluko omkhulu phakathi kwama-IC wokuthuthukisa i-synchronous nama-asynchronous boost umehluko wezindlela zokulungisa.

Isekhethi ye-IC ye-synchronous boost isebenzisa i-MOS ngoba amashubhu e-MOS anokumelana okuphansi kakhulu kwangaphakathi endaweni evulekile futhi ukulahlekelwa enqubweni yokulungisa kuphansi kakhulu, ngakho ukusebenza kahle kwe-synchronous boost kuphezulu futhi ukukhiqizwa kokushisa kuphansi.Ingasetshenziselwa izinhlelo zokusebenza zokuthuthukisa amandla aphezulu.

Amasekhethi e-IC akhuthazayo asebenzisa ama-diode ukulungisa.Ama-Diode anokwehla kwamandla kagesi enqubweni yokulungisa.Uma iphezulu yamanje enqubweni yokulungisa, kuyanda ukulahlekelwa.Ngokuvamile, amandla awakwazi ukuba amandla aphezulu.