Izingxenye ze-elekthronikhi I-IC chip LM25118Q1MH/NOPB

Isilawuli se-Buck-Boost switching se-LM25118 esibanzi sobubanzi bamandla kagesi sihlanganisa yonke imisebenzi edingekayo ukuze kusetshenziswe isilawuli se-Buck-Boost esisebenza kahle, esingabizi kakhulu sisebenzisa ubuncane bezingxenye zangaphandle.I-Buck Boost topology igcina ukulawulwa kwamandla kagesi okukhiphayo lapho i-voltage yokufaka ingaphansi noma inkulu kune-voltage ephumayo iyenza ifaneleke ikakhulukazi izinhlelo zokusebenza zezimoto.I-LM25118 isebenza njengesilawuli sempunzi kuyilapho i-voltage yokufaka inkulu ngokwanele kune-voltage ephumayo elawulwayo futhi kancane kancane ishintshela kumodi ye-buck-boost njengoba i-voltage yokufaka isondela kokuphumayo.Le ndlela yemodi ekabili igcina umthetho phezu kwebanga elibanzi lama-voltage okokufaka ngokusebenza kahle kokuguqula kumodi yebhakhi kanye nokukhiphayo okungaphazamisi phakathi noshintsho lwemodi.Lesi silawuli esisebenziseka kalula sihlanganisa abashayeli be-MOSFET esezingeni eliphezulu kanye ne-low-side boost MOSFET.Indlela yokulawula yesilawuli isuselwe ekulawuleni imodi yamanje kusetshenziswa irempu yamanje elingisiwe.Ukulawulwa kwemodi yamanje okulingiswayo kunciphisa ukuzwela komsindo wesekethe yokuguquguquka kobubanzi be-pulse, okuvumela ukulawulwa okuthembekile kwemijikelezo yemisebenzi emincane edingekayo ezinhlelweni zokusebenza zamandla kagesi aphezulu.Izici ezingeziwe zokuvikela zifaka umkhawulo wamanje, ukuvala shaqa okushisayo, nokokufaka okunika amandla.Idivayisi itholakala ngamandla athuthukisiwe, iphakheji ye-HTSSOP yamaphini angu-20 ehlanganisa iphedi yokunamathisela okudaye eveziwe ukusiza ukushabalala kokushisa.