Otu ọrụ nkwụsị 2022+ in-stock Original&New IC CHIPS Electronics Components LM25118Q1MH/NOPB
Njirimara ngwaahịa
| Ụdị | Nkọwa |
| Otu | Sekit jikọtara ọnụ (ICs) PMIC - Ndị na-achịkwa voltaji - DC DC ndị na-ahụ maka mgbanwe |
| Mfr | Ngwa Texas |
| Usoro | Ụgbọ ala, AEC-Q100 |
| ngwugwu | Tube |
| SPQ | 73 Tube |
| Ọnọdụ ngwaahịa | Na-arụ ọrụ |
| Ụdị mmepụta | Onye na-anya transistor |
| Ọrụ | Nkwụghachi-elu, mgbada-ala |
| Nhazi mmepụta | Nke dị mma |
| Topology | Buck, kwalite |
| Ọnụọgụ nke mmepụta | 1 |
| Usoro mmepụta | 1 |
| Voltaji - Ntinye (Vcc/Vdd) | 3V ~ 42V |
| Ugboro - Ịgbanwe | Ruo 500kHz |
| Usoro ọrụ (Max) | 75% |
| Ihe nrụpụta mmekọrịta | No |
| Mmekọrịta elekere | Ee |
| Oghere Usoro Interface | - |
| Njirimara njikwa | Kwado, njikwa ugboro ugboro, Ramp, Soft Start |
| Okpomọkụ na-arụ ọrụ | -40°C ~ 125°C (TJ) |
| Ụdị nkwụnye | Ugwu elu |
| Ngwungwu / Akpa | 20-PowerTSSOP (0.173 ", obosara 4.40mm) |
| Ngwungwu ngwaọrụ ndị na-eweta ihe | 20-HTSSOP |
| Nọmba ngwaahịa ntọala | LM25118 |
Ọdịiche
A. Gịnị bụ ihe dị iche n'etiti voltaji regulator na a booster?
Ndị na-ahụ maka voltaji na ndị na-ebuli elu, n'ụkpụrụ, ndị na-ahụ maka voltaji na ndị na-ebuli elu adịghị iche, na ndị na-ahụ maka voltaji na ndị na-eme ka ọrụ na-arụ ọrụ na ojiji, ndị na-ahụ maka voltaji na ndị na-ebuli elu nwere nnukwu ọdịiche.
Voltage regulator bụ tumadi ji voltaji akwusighi ike, na voltaji fluctuations bụ dịtụ nnukwu, ya voltaji fluctuations ike izute nkịtị ojiji nke eletriki akụrụngwa chọrọ, na voltaji regulator, bụ fluctuation nke ibu, voltaji stabilization, voltaji kwụsie ike na a. ụfọdụ ụkpụrụ, iji hụ na akụrụngwa eletrik nwere ike ịrụ ọrụ nke ọma.
Onye na-ahụ maka voltaji na-arụ ọrụ na-arụ ọrụ, a ga-enwe oke voltaji yana oke voltaji, mgbe voltaji dị oke ala, onye na-ahụ maka voltaji ga-adị n'elu ọrụ nkwalite eriri voltaji, mgbe voltaji dị elu, voltaji dị elu. regulator bụ voltaji maka ọrụ ego.Iji hụ na voltaji dị nro.Ya mere, voltaji regulator nke nwere ike ịkwalite, nwekwara ike ịbụ nnukwu ego.
Boosters, site na aha anyị nwere ike ịhụ ojiji nke ngwaahịa, ya bụ, voltaji na-ebuli set nke akụrụngwa, na ngwá ọrụ a na-enye naanị voltaji na-arụ ọrụ.Na bụ inye a ofu nkwado uru, dị ka booster booster uru bụ 100V, mgbe voltaji si 300V ka 400V, mmepụta voltaji nke booster ga-abụkwa si 400V ka 500V, booster na ojiji nke usoro, ike naanị welie. voltaji ahụ, mana enweghị ike ime ka voltaji kwụsie ike, yabụ a na-ejikarị ihe nkwalite na ebe voltaji ahụ kwụsiri ike.Ọ bụrụ na gburugburu ebe obibi nke mgbanwe voltaji ugboro ugboro, voltaji mmepụta na-agbanwekwa.
N'ezie, boosters na voltaji regulators iji tụnyere, n'ihi na ọrụ nke abụọ enweghị ike, ojiji na-adịghị eji, n'ihi ya, ma na-apụghị ime a ntụnyere, na-apụghị ikpe onye ka mma na onye ka njọ, nke kwesịrị ikpe ikpe. n'ihi gburugburu ebe obibi.Iji ngwá ọrụ kwesịrị ekwesị nwere ike ịrụ ọrụ, ọ bụrụ na iji ihe na-ezighị ezi, mgbe ahụ, akụrụngwa agaghị arụ ọrụ.
Ọ bụ ezie na a pụghị ikpe abụọ ahụ nke ọma ma ọ bụ ihe ọjọọ, ma ọ bụrụ na anyị ejighị n'aka ma a ga-eji ihe nkwalite ma ọ bụ voltaji regulator, ma ọ bụrụ na anyị nwere ego zuru ezu maka mmefu ego, anyị nwere ike họrọ kpọmkwem voltaji regulator.Nke a bụ n'ihi na onye na-ahụ maka voltaji dabara nke ọma na ihe achọrọ nke nkwalite na ọdịdị nke ọrụ nkwalite, n'ihe gbasara ojiji na arụmọrụ ya.N'ihi gburugburu ebe dị iche iche na ojiji, a pụghị iji ya tụnyere onye na-ahụ maka nchịkwa na onye na-akwalite, n'ihi ya, anyị enweghị ike ikwu onye dị mma na onye dị njọ.
B.Kedu ihe ndozi synchronous pụtara?Kedu ihe dị iche n'etiti synchronous na enweghị mmekọrịta?
Ndozi a na-emebu bụ iji njirimara otu onye na-eduzi diode iji mezie ihe dị ugbu a, usoro nhazi ahụ anaghị achọ nchịkwa mmadụ.N'ihi na nke ugbu a na-aga n'ihu, reverse cut-off, ma n'ihi na diode n'onwe ya ga-enwe ugbu a site na voltaji dobe, na rectification usoro ga-efunahụ ike, na-akpata okpomọkụ, na ike ntughari arụmọrụ nke a rectification ogbo ga-akwatu ala.
Ndozi mmekọrịta pụtara na kama iji diode na ngalaba mmezi, a na-eji MOS kama.N'ihi na MOS na-eduzi na obere nguzogide, ọgbọ okpomọkụ dị ntakịrị ike na-efunahụ ya, ya mere a na-abawanye arụmọrụ ntụgharị ike.Usoro mmezi nke mmekọrịta dị otú ahụ na mgbe a na-achọgharị ike site na isi akụkụ gaa n'akụkụ nke abụọ, MOS tube kwekọrọ na akụkụ nke abụọ na-emepe ma na-enye ohere ugbu a ka ọ gafere.N'aka nke ọzọ, mgbe a na-achọghị ịnyefe ike, a na-agbanyụ tube MOS, na-egbochi ugbu a ka ọ na-asọ.
Iji maa atụ, na nfegharị azụ, mgbe agbanyụrụ isi ihe na-agbanwe tube, a na-agbanye tube rectifier MOS nke dị n'akụkụ nke abụọ, na-enye ohere ka ọ na-agba ọsọ.Mgbe isi ngbanwe tube meghere, a na-agbanye MOS synchronous rectifier ka ọ kwụsị ugbu a ka ọ na-agafe na ihe ntụgharị na-echekwa ike.N'ime usoro mmecha synchronous, ọ dị mkpa ijikwa oge ọkụ na nkwụsị nke akụkụ MOS abụọ ahụ, na-emeghe ma na-emechi ha ka ọ bụrụ ihe nrụpụta synchronous, n'ihi ya, a na-akpọ ya rectification synchronous.Usoro a dị mgbagwoju anya ma e jiri ya tụnyere mmezi diode.
Banyere ngwaahịa
LM25118-Q1 obosara voltaji nke Buck-Boost switching regulator njikwa na-egosipụta ọrụ niile dị mkpa iji mejuputa nnukwu arụmọrụ Buck-Boost na-arụ ọrụ nke ọma site na iji opekempe nke mpụga mpụga.Topology Buck-Boost na-edobe ụkpụrụ voltaji mmepụta mgbe ntinye voltaji ma ọ bụ karịa ma ọ bụ karịa voltaji mmepụta na-eme ka ọ dabara adaba maka ngwa ụgbọ ala.LM25118 na-arụ ọrụ dị ka onye na-ahụ maka ego ebe voltaji ntinye aka zuru oke karịa voltaji mmepụta a na-ahazi wee jiri nwayọọ nwayọọ na-atụgharị gaa na ọnọdụ buck-boost ka voltaji ntinye na-abịaru nso na mmepụta.Uzo uzo abuo a na-edobe iwu n'ofe oke ntinye voltaji nwere ntughari kacha mma na onodu buck na ihe na-adighi nma n'oge mgbanwe onodu.Ihe njikwa a dị mfe iji gụnyere ndị ọkwọ ụgbọ ala maka MOSFET dị elu yana nkwalite MOSFET dị ala.Usoro njikwa nke onye na-ahụ maka njikwa dabere na njikwa ọnọdụ ugbu a site na iji mgbanaka dị ugbu a agbakwunyere.Njikwa ọnọdụ ugbu a na-emulated na-ebelata mmetụta mkpọtụ nke sekit modulation n'obosara, na-enye ohere njikwa ntụkwasị obi nke obere obere ọrụ ọrụ dị mkpa na ngwa ntinye voltaji dị elu.Atụmatụ nchebe agbakwunyere gụnyere oke ugbu a, nkwụsị ọkụ, yana ntinye aka.Ngwaọrụ dị na ngwungwu HTSSOP 20-pin emelitere ike na-egosipụta pad na-egbu egbu ekpughere ekpughere iji nyere aka mgbasa ọkụ.
