Ntchito imodzi yoyimitsa 2022+ yomwe ili m'masheya Yoyamba & Yatsopano ya IC CHIPS Zamagetsi Zamagetsi LM25118Q1MH/NOPB
Makhalidwe a Zamalonda
| TYPE | DESCRIPTION |
| Gulu | Magawo Ophatikizana (ICs) PMIC - Voltage Regulators - DC DC Switching Controllers |
| Mfr | Texas Instruments |
| Mndandanda | Magalimoto, AEC-Q100 |
| Phukusi | Chubu |
| SPQ | 73 Tube |
| Mkhalidwe wa Zamalonda | Yogwira |
| Mtundu Wotulutsa | Woyendetsa Transistor |
| Ntchito | Yendani Pamwamba, Yang'anani Pansi |
| Kukonzekera kwa Zotulutsa | Zabwino |
| Topology | Buck, Boost |
| Chiwerengero cha Zotuluka | 1 |
| Zotuluka Gawo | 1 |
| Voltage - Supply (Vcc/Vdd) | 3V ~ 42V |
| pafupipafupi - Kusintha | Mpaka 500 kHz |
| Duty Cycle (Max) | 75% |
| Synchronous Rectifier | No |
| Kulunzanitsa koloko | Inde |
| Zithunzi za seri | - |
| Control Features | Yambitsani, Frequency Control, Ramp, Soft Start |
| Kutentha kwa Ntchito | -40°C ~ 125°C (TJ) |
| Mtundu Wokwera | Surface Mount |
| Phukusi / Mlandu | 20-PowerTSSOP (0.173", 4.40mm M'lifupi) |
| Phukusi la chipangizo cha Supplier | 20-HTSSOP |
| Nambala Yoyambira Yogulitsa | LM25118 |
Kusiyana
A. Kodi pali kusiyana kotani pakati pa voteji regulator ndi booster?
Zowongolera ma voltage ndi ma booster, makamaka, zowongolera ma voltage ndi ma booster sizosiyana kwambiri, ndipo zowongolera ma voliyumu ndi ma booster pakugwira ntchito ndikugwiritsa ntchito, zowongolera ma voliyumu ndi zolimbikitsira zimakhala ndi kusiyana kwakukulu.
Voltage regulator imagwiritsidwa ntchito makamaka pakusakhazikika kwamagetsi, ndipo kusinthasintha kwamagetsi ndikokulirapo, kusinthasintha kwake kwamagetsi sikungakwaniritse zofunikira zamagetsi zamagetsi, komanso magetsi owongolera, ndiko kusinthasintha kwakukulu, kukhazikika kwamagetsi, kukhazikika kwamagetsi mu zina zamtengo wapatali, kuonetsetsa kuti zida zamagetsi zimatha kugwira ntchito bwino.
Voltage regulator ikugwira ntchito, padzakhala voteji yotsika kwambiri komanso voteji yokwera kwambiri, voteji ikakhala yotsika kwambiri, chowongolera voteji chidzakhala pamwamba pa ntchito yokweza voteji, mphamvu ikakwera kwambiri, voteji regulator ndiye voteji ya ntchito ya buck.Kuonetsetsa kuti voteji ndi yosalala.Chifukwa chake chowongolera chamagetsi chomwe chitha kukwezedwa, chingakhalenso ndalama.
Zothandizira, kuchokera ku dzina timatha kuwona kugwiritsidwa ntchito kwa chinthucho, ndiye kuti, magetsi owonjezera zida, ndipo zida izi zimangopereka ntchito yowonjezera mphamvu.Ndipo ndikupereka mtengo wokhazikika wowonjezera, monga 100V, pamene voteji kuchokera ku 300V mpaka 400V, mphamvu yamagetsi yamagetsi idzakhalanso kuchokera ku 400V mpaka 500V, yowonjezera pogwiritsira ntchito ndondomekoyi, imangowonjezera. voteji, koma sangathe kukhazikika voteji, choncho chilimbikitso nthawi zambiri ntchito m'malo voteji ndi wokhazikika.Ngati m'malo osinthasintha pafupipafupi, mphamvu yamagetsi imasinthanso.
Ndipotu, boosters ndi voteji regulators kuyerekeza, chifukwa ntchito ya awiri sangathe, ntchito si ntchito, kotero onse sangakhoze kuchita kuyerekeza, ndipo sangathe kuweruza amene ali bwino ndi amene ali woipa, amene ayenera kuweruzidwa. chifukwa cha chilengedwe.Kugwiritsa ntchito zida zoyenera kungathe kuchitapo kanthu, ngati kugwiritsidwa ntchito molakwika, ndiye kuti zida sizingagwire ntchito.
Ngakhale kuti awiriwo sangaweruzidwe kuti ndi abwino kapena oipa, ngati sitikudziwa ngati tigwiritse ntchito chowonjezera kapena chowongolera magetsi, ngati tili ndi ndalama zokwanira pa bajeti, tikhoza kusankha mwachindunji chowongolera magetsi.Izi ndichifukwa choti chowongolera chamagetsi chimagwirizana bwino ndi zomwe chiwongolerocho ndi momwe zimagwirira ntchito, potengera momwe amagwiritsidwira ntchito komanso momwe amagwirira ntchito.Chifukwa cha madera osiyanasiyana ndi ntchito, wowongolera ndi chilimbikitso sangathe kufananizidwa, kotero sitinganene kuti ndani ali wabwino ndi yemwe ali woyipa.
B.Kodi kukonzanso kofanana kumatanthauza chiyani?Kodi pali kusiyana kotani pakati pa synchronous ndi non-synchronous?
Kukonzanso mwachizolowezi ndikugwiritsa ntchito mawonekedwe a diode amodzi kuti akonzerepo, kukonzanso sikufuna kuwongolera kwamunthu.Chifukwa kutsogolo kwaposachedwa, kudulidwa kosinthika, koma chifukwa diode yokha idzakhala ndi yapano kudzera pakugwetsa voteji, njira yokonzanso idzataya mphamvu, zomwe zimapangitsa kutentha, ndipo mphamvu yosinthira mphamvu ya gawoli yokonzanso idzagwetsedwa.
Kukonzanso kosinthika kumatanthauza kuti m'malo mogwiritsa ntchito diode mu gawo lokonzanso, MOS imagwiritsidwa ntchito m'malo mwake.Chifukwa MOS imachita ndi kukana pang'ono, kutentha kwa kutentha kumakhala kochepa mphamvu, kotero mphamvu yosinthira mphamvu ikuwonjezeka.Njira yosinthira ma synchronous ndiyoti pamene kutengera mphamvu kuchokera ku mbali yoyamba kupita ku gawo lachiwiri kumafunika, chubu chofananira cha MOS chomwe chili mbali yachiwiri chimatseguka ndikulola kuti pakali pano kuyenda.Mosiyana ndi zimenezi, pamene kusamutsa mphamvu sikufunika, chubu cha MOS chimazimitsidwa, kulepheretsa kuti madzi asayende.
Kuti tifotokozere, pobwerera, chubu chachikulu chosinthira chikazimitsidwa, chubu cha synchronous rectifier MOS chomwe chili mbali yachiwiri chimayatsidwa, kulola kuti pakali pano kuyenda.Chubu chachikulu chosinthira chikatsegulidwa, cholumikizira cholumikizira MOS chimazimitsidwa kuti chiyimitse magetsi kuti asadutse ndipo thiransifoma imasunga mphamvu.M'njira yomaliza yolumikizirana, ndikofunikira kuwongolera nthawi yotsegula ndi yotseka magawo awiri a MOS, mosinthana ndikutsegula ndi kutseka kuti apange synchronous rectifier, motero imatchedwa synchronous rectification.Njirayi ndi yovuta kwambiri poyerekeza ndi kukonzanso diode.
Za Mankhwala
The LM25118-Q1 wide voltage range Buck-Boost switching regulator controller imakhala ndi ntchito zonse zofunika kuti akhazikitse zowongolera zapamwamba, zotsika mtengo za Buck-Boost pogwiritsa ntchito zida zochepa zakunja.Buck-Boost topology imasunga malamulo otulutsa magetsi pomwe magetsi olowera amakhala ochepera kapena okulirapo kuposa ma voliyumu otulutsa ndikupangitsa kuti ikhale yoyenera pamagalimoto.LM25118 imagwira ntchito ngati chowongolera chandalama pomwe voteji yolowera ndi yayikulu mokwanira kuposa mphamvu yamagetsi yomwe imayendetsedwa ndipo pang'onopang'ono imasintha kupita ku buck-boost mode pomwe mphamvu yolowera ikuyandikira zomwe zimatuluka.Njira yapawiri iyi imasunga malamulo pama voliyumu osiyanasiyana olowera ndikusintha bwino mumayendedwe a buck komanso kutulutsa kopanda glitch panthawi yakusintha.Chowongolera chosavuta kugwiritsa ntchitochi chimaphatikizapo madalaivala amtundu wapamwamba wa MOSFET ndi MOSFET yotsika kwambiri.Njira yowongolera ya chowongolera imatengera kuwongolera kwakanthawi kogwiritsa ntchito njira yotsatsira.Kuwongolera kwakanthawi koyeserera kumachepetsa kukhudzika kwa phokoso la pulse-width modulation circuit, kulola kuwongolera kodalirika kwamayendedwe ang'onoang'ono omwe amafunikira pama voliyumu apamwamba kwambiri.Zina zowonjezera zachitetezo zikuphatikiza malire apano, kutseka kwamafuta, ndi kuyatsa.Chipangizochi chimapezeka mu phukusi la HTSSOP lowonjezera mphamvu, la pini 20 lokhala ndi cholumikizira chakufa chowonekera kuti chithandizire kutenthedwa.
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