LP87524BRNFRQ1 VQFN-HR26 Zigawo Zatsopano Zoyeserera Zophatikiza Chip IC LP87524BRNFRQ1

1.

Ntchito ya converter

Converter ndi chipangizo chomwe chimasintha chizindikiro kukhala chizindikiro china.Chizindikiro ndi mawonekedwe kapena chonyamulira cha chidziwitso chomwe chilipo, ndipo mu zida zodzitchinjiriza ndi makina owongolera, chizindikirocho nthawi zambiri chimasinthidwa kukhala chizindikiro china chomwe chimafananizidwa ndi kuchuluka kapena kuchuluka kwazomwe zimagwirizanitsa zida ziwirizo, Converter nthawi zambiri imakhala ulalo wapakatikati pakati pa zida ziwiri (kapena zida).

2.

Momwe mungagwiritsire ntchito ma converters

Kutembenuza kwa buck ndi njira yosinthira magetsi, kalasi ya chipangizo chomwe chimakhala ndi chosinthira (nthawi zambiri MOSFET) kuti chitsegule ndikuzimitsa dera, kusintha kumeneku kumatulutsa mafunde apakati, ngati ntchito yosinthira kusinthako yakhazikitsidwa. 50%, mwachitsanzo, kusintha kuli pa 50% ya nthawiyo, pafupifupi voteji idzakhala 50% ya zolowetsa.

Mafunde a square amayenera kusinthidwa kuti apereke mphamvu zothandiza ndipo nthawi zambiri ma inductors ndi ma capacitor amagwiritsidwa ntchito mndandanda kuti akwaniritse ntchitoyi.Kuphatikiza uku kumadziwika ngati fyuluta ya LC low-pass, pomwe mawonekedwe a inductor amawongolera pakali pano ndipo capacitor imakana kusintha kwadzidzidzi kwamagetsi.The ophatikizana zotsatira umabala ndi yosalala voteji linanena bungwe ndi otsika ripple.Mwachitsanzo, ngati magetsi olowera ndi 10V ndipo chosinthira chimagwiritsa ntchito 50% yozungulira, mphamvu yotulutsa idzakhala 5V.

Chigawo china chofunikira chosinthira buck ndi diode kapena chosinthira china cholumikizidwa molumikizana ndi chowongolera.Izi ndizobwezera ntchito ya inductor, pomwe pano mu inductor singasinthidwe nthawi yomweyo, kuteteza machubu osinthira kuti asawonongeke chifukwa chodzaza.

The buck converter ilinso ndi ma circuitry owonjezera kuti atsimikizire kukhazikika kwamagetsi.Chosinthiracho chimagwiritsa ntchito dongosolo lotsekeka lokhala ndi malingaliro oyipa kuti ayang'anire kutulutsa kwamagetsi ndikusintha mwachangu kayendetsedwe ka ma switch kuti azitha kuyendetsa magetsi.

3.

Zolinga zopangira ma converters a buck

otembenuza buck ndiwothandiza kwambiri, pomwe zida zina zimachita bwino kwambiri kuposa 95%.

zosinthira buck zimakhala zotsika mtengo kuposa zowongolera mzere pamilingo yayikulu yamagetsi, pomwe mtengo woziziritsa wa chowongolera chowongolera ungakhale wotsika kuposa mtengo wogwiritsa ntchito chosinthira chandalama.

zotulutsa za buck converter zimakhala ndi phokoso, zomwe zikutanthauza kuti kutulutsa kwa mzere wowongolera kumakhala kokhazikika komanso koyenera kugwiritsa ntchito zomwe zimafuna phokoso lochepa.

owongolera liniya amatha kuyankha mwachangu pazosintha ndi zotuluka poyerekeza ndi otembenuza a tona.