Ts'ebeletso e le 'ngoe ea ho emisa 2022+ in-stock Original&New IC CHIPS Electronics Components LM25118Q1MH/NOPB
Litšobotsi tsa Sehlahisoa
| MOFUTA | TLHALOSO |
| Sehlopha | Lipotoloho tse Kopantsoeng (ICs) PMIC - Voltage Regulators - DC DC Switching Controllers |
| Mfr | Lisebelisoa tsa Texas |
| Letoto | Likoloi, AEC-Q100 |
| Sephutheloana | Tube |
| SPQ | 73Tube |
| Boemo ba Sehlahiswa | E sebetsa |
| Mofuta oa Sephetho | Mokhanni oa Transistor |
| Mosebetsi | Phahamisa, Tloha |
| Tlhophiso ea Sephetho | E ntle |
| Topology | Buck, Matlafatsa |
| Palo ea Litholoana | 1 |
| Mekhahlelo ea Sephetho | 1 |
| Voltage - Phepelo (Vcc/Vdd) | 3V ~ 42V |
| Khafetsa - Ho fetoha | Ho fihlela ho 500kHz |
| Duty Cycle (Boholo) | 75% |
| Synchronous Rectifier | No |
| Sync oache | Ee |
| Li-serial Interfaces | - |
| Laola Likarolo | Noble, Frequency Control, Ramp, Soft Start |
| Mocheso oa ho sebetsa | -40°C ~ 125°C (TJ) |
| Mofuta oa ho Beha | Thaba e kaholimo |
| Sephutheloana / Taba | 20-PowerTSSOP (0.173", 4.40mm Bophara) |
| Sephutheloana sa Sesebelisoa sa Bafani | 20-HTSSOP |
| Nomoro ea Sehlahisoa sa Motheo | LM25118 |
Phapang
A. Phapang ke efe pakeng tsa voltage regulator le booster?
Litaolo tsa motlakase le li-boost, ha e le hantle, li-voltage regulators le booster ha li fapane haholo, 'me li-voltage regulator le li-boost ts'ebetsong le ts'ebelisong, lilaoli tsa motlakase le li-boost li na le phapang e kholo.
Voltage regulator e sebelisoa haholo bakeng sa ho se tsitse ha motlakase, 'me liphetoho tsa motlakase li batla li le kholo, ho feto-fetoha ha motlakase ha li khone ho kopana le ts'ebeliso e tloaelehileng ea litlhoko tsa lisebelisoa tsa motlakase, le taolo ea motlakase, ke ho feto-fetoha ha matla a motlakase, botsitso ba motlakase ho mefuta e itseng ea litekanyetso, ho netefatsa hore lisebelisoa tsa motlakase li ka sebetsa ka mokhoa o tloaelehileng.
Voltage regulator ha e ntse e sebetsa, ho tla ba le voltage e tlase haholo hammoho le voltage e phahameng haholo, ha voltage e le tlase haholo, voltage regulator e tla be e le holim'a mosebetsi oa ho phahamisa mohala, ha motlakase o le holimo haholo, motlakase o le tlase haholo. regulator ke motlakase bakeng sa mosebetsi oa buck.Ho etsa bonnete ba hore motlakase o bonolo.Kahoo motlakase oa motlakase o ka matlafatsoang, le oona o ka ba buck.
Li-boosters, tse tsoang ka lebitso re ka bona ts'ebeliso ea sehlahisoa, ke hore, motlakase oa ho matlafatsa sete ea lisebelisoa, 'me sesebelisoa sena se fana ka mosebetsi oa ho matlafatsa motlakase feela.'Me ke ho fana ka boleng bo tsitsitseng ba booster, joalo ka boleng ba booster boost ke 100V, ha motlakase o tsoang ho 300V ho ea ho 400V, motlakase o tsoang ho 400V ho ea ho 500V, ts'ebeliso ea ts'ebeliso ea ts'ebetso, e ka ntlafatsa feela. motlakase, empa ha o khone ho tsitsisa motlakase, kahoo booster e atisa ho sebelisoa libakeng tseo motlakase o batlang o tsitsitse.Haeba tikolohong ea ho feto-fetoha ha motlakase khafetsa, motlakase o tsoang le ona oa fetoha.
Ha e le hantle, li-booster le li-voltage regulators ho bapisa, hobane mosebetsi oa bobeli ha o khone, tšebeliso ha e sebelisoe, kahoo ka bobeli ba ke ke ba etsa papiso, 'me ba ke ke ba ahlola hore na ke mang ea molemo le ea hobe le ho feta, e lokelang ho ahloloa. ka baka la tikoloho.Ho sebelisa thepa e nepahetseng ho ka phetha karolo, haeba tšebeliso e fosahetseng, joale thepa e ke ke ea sebetsa.
Le hoja tse peli li ke ke tsa ahloloa tse ntle kapa tse mpe, haeba re sa tsebe hantle hore na re tla sebelisa booster kapa voltage regulator, haeba re e-na le chelete e lekaneng bakeng sa tekanyetso, re ka khetha motlakase oa motlakase ka ho toba.Sena se bakoa ke hore motlakase oa motlakase o lumellana hantle le litlhoko tsa booster le mofuta oa mosebetsi oa booster, ho latela tšebeliso ea eona le ts'ebetso ea eona.Ka lebaka la tikoloho le litšebeliso tse fapaneng, molaoli le booster li ke ke tsa bapisoa, kahoo re ke ke ra bolela hore na ke mang ea molemo le ea mobe.
B.Ho boleloa eng ka tokiso e lumellanang?Phapano ke efe lipakeng tsa synchronous le non-synchronous?
Tokiso e tloaelehileng ke tšebeliso ea litšobotsi tsa mokhanni a le mong oa diode ho lokisa hona joale, mokhoa oa ho lokisa ha o hloke taolo ea motho.Hobane sephetho sa hona joale se ka morao, empa hobane diode ka boeona e tla ba le hona joale ka ho theoha ha motlakase, ts'ebetso ea tokiso e tla felloa ke matla, e leng se tla baka mocheso, 'me matla a ho fetola matla a sethala sena sa tokiso a tla theoleloa.
Synchronous rectification e bolela hore ho e-na le ho sebelisa diode karolong ea tokiso, MOS e sebelisoa ho e-na le hoo.Hobane MOS e tsamaisana le khanyetso e nyane haholo, tlhahiso ea mocheso e lahleheloa ke matla a fokolang, kahoo matla a ho fetola matla a eketseha.Mokhoa oa ho lokisa oa synchronous ke oa hore ha ho fetisoa ha matla ho tloha ka lehlakoreng le ka sehloohong ho ea lehlakoreng la bobeli ho hlokahala, tube e lumellanang ea MOS ka lehlakoreng la bobeli e bula 'me e lumella hona joale ho phalla.Ka lehlakoreng le leng, ha phetisetso ea matla e sa hlokehe, tube ea MOS e tima, e thibela hona joale ho phalla.
Ho etsa mohlala, ka ho fofa, ha tube e kholo ea ho fetola e tima, MOS tube ea synchronous rectifier ka lehlakoreng la bobeli e buloa, e lumellang hore hona joale ho phalle.Ha ho buloa tube e kholo ea phetoho, MOS ea synchronous rectifier ea tima ho emisa hona joale hore e se ke ea phalla 'me transformer e boloka matla.Ts'ebetsong ea ho qetela ea synchronous, hoa hlokahala ho laola linako tsa ho bulela le ho tima tsa likarolo tse peli tsa MOS, ho bula le ho koala ka tsela e fapaneng ho theha sebatli sa synchronous, kahoo se bitsoa synchronous rectification.Mokhoa ona o rarahane ho feta ha o bapisoa le tokiso ea diode.
Mabapi le Sehlahisoa
LM25118-Q1 mefuta e mengata ea motlakase ea Buck-Boost switching regulator e na le mesebetsi eohle e hlokahalang ho kenya ts'ebetsong molaoli oa Buck-Boost o sebetsang hantle, o theko e boima o sebelisa bonyane ba likarolo tsa kantle.The Buck-Boost topology e boloka taolo ea motlakase oa tlhahiso ha motlakase o kenang o le ka tlase kapa o moholo ho feta motlakase o tsoang ho o etsa hore o tšoanelehe haholo bakeng sa lits'ebetso tsa likoloi.LM25118 e sebetsa e le molaoli oa buck ha motlakase o kenang o le moholo ka ho lekaneng ho feta motlakase o laoloang 'me butle-butle o fetela mokhoeng oa buck-boost ha motlakase o kenang o ntse o atamela tlhahiso.Mokhoa ona oa mekhoa e 'meli o boloka taolo holim'a mefuta e mengata ea li-voltages tse kentsoeng ka katleho e nepahetseng ea ho fetola ka mokhoa oa buck le tlhahiso e sa hlokeng glitch nakong ea liphetoho tsa mokhoa.Taolo ena e bonolo ho e sebelisa e kenyelletsa bakhanni ba MOSFET ea mahlakore a holimo le MOSFET e matlafatsang lehlakore.Mokhoa oa taolo oa regulator o ipapisitse le taolo ea mokhoa oa hajoale o sebelisa tsela e etsisoang ea hajoale.Taolo ea mokhoa oa hajoale e etsisoang e fokotsa kutloelo-bohloko ea lerata la pulse-width modulation circuit, e lumellang taolo e tšepahalang ea lipotoloho tse nyane haholo tse hlokahalang lits'ebetsong tse phahameng tsa motlakase.Likarolo tse ling tsa ts'ireletso li kenyelletsa moeli oa hajoale, ho koala ha mocheso, le ho kenya letsoho.Sesebelisoa se fumaneha ka har'a sephutheloana sa HTSSOP se matlafalitsoeng ka li-pini tse 20 se nang le "fix attach pad" ho thusa ho tima mocheso.
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