LM46001AQPWPRQ1 HTSSOP Cheebtsam Tshiab & Thawj Kev Ntsuas Kev Sib Txuas Hluav Taws Xob IC Chips Electronics
Yam khoom
| HOM | Kev piav qhia |
| Qeb | Integrated Circuits (ICs) PMIC - Voltage Regulators - DC DC Hloov Regulators |
| Mfr | Texas Instruments |
| Series | Automotive, AEC-Q100, SIMPLE SWITCHER® |
| Pob | Daim kab xev & Reel (TR) Daim kab xev (CT) Digi-Reel® |
| SPQ | 250 T&R |
| Yam khoom | Active |
| Muaj nuj nqi | Kauj ruam-down |
| Output Configuration | Qhov zoo |
| Topology | Buck |
| Hom tso zis | Kho tau |
| Number of Outputs | 1 |
| Voltage - Cov tswv yim (Min) | 3.5v ua |
| Voltage - Input (Max) | 60v ua |
| Voltage - Tso zis (Min/Fixed) | 1V |
| Voltage - Tso zis (Max) | 28 v |
| Tam sim no - Tso zis | 1A |
| Zaus - Hloov | 200 kHz ~ 2.2 MHz |
| Synchronous Rectifier | Yog lawm |
| Ua haujlwm kub | -40 ° C ~ 125 ° C (TJ) |
| Mounting Hom | Nto Mount |
| Pob / Case | 16-TSSOP (0.173", 4.40mm Dav) Exposed Pad |
| Cov Khoom Muag Khoom Pob | 16- HTSO |
| Base Product Number | TIAB SA 46001 |
Qhov zoo
Kev sib piv ntawm qhov zoo ntawm cov keyboards integrated thiab lwm cov keyboards rau puck converters
1. Sab nraud tiv thaiv kev sib txuas ua ke.
Muaj ntau qhov sib xyaw ua ke thiab cov keyboards sab nraud hauv cov kev daws teeb meem puck converter, tom kawg feem ntau hu ua step-down lossis puck controllers.Ob hom kev hloov no muaj qhov zoo thiab qhov tsis zoo thiab yog li kev xaiv ntawm lawv yuav tsum tau ua nrog lawv qhov zoo thiab qhov tsis zoo hauv siab.
Ntau cov keyboards sib xyaw ua ke muaj qhov zoo ntawm kev suav cov khoom qis, qhov zoo dua uas tso cai rau cov keyboards no kom muaj qhov me me thiab siv rau hauv ntau daim ntawv thov qis tam sim no.Vim lawv cov xwm txheej sib xyaw ua ke, lawv txhua tus pom zoo EMI kev ua tau zoo thaum raug tiv thaiv qhov kub thiab txias lossis lwm yam cuam tshuam sab nraud uas yuav tshwm sim.Txawm li cas los xij, lawv kuj muaj qhov tsis zoo ntawm kev txwv tam sim no thiab thermal;whereas sab nraud keyboards muab kev yooj yim dua, nrog rau tam sim no tuav peev xwm tsuas yog los ntawm kev xaiv ntawm sab nraud FETs.Ntawm qhov tsis zoo, cov keyboards sab nraud xav tau cov khoom siv ntau dua thiab yuav tsum tau tiv thaiv los ntawm cov teeb meem uas yuav tshwm sim.
Txhawm rau tswj cov khoom siv hluav taws xob siab dua, cov keyboards kuj yuav tsum muaj qhov loj dua, uas ua rau kev sib koom ua ke kim dua vim nws siv qhov chaw muaj txiaj ntsig ntau dua ntawm cov nti thiab yuav tsum muaj lub pob loj dua.Kev siv hluav taws xob kuj yog qhov nyuaj.Yog li ntawd, peb tuaj yeem xaus lus tias rau cov zis ntau dua (feem ntau tshaj 5A), cov keyboards sab nraud yog qhov kev xaiv zoo tshaj.
2. Synchronous piv rau asynchronous rectification
Ib qho asynchronous lossis non-synchronous rectifier puck converter nrog tsuas yog ib qho kev hloov pauv yuav tsum muaj qhov txuas ntxiv diode nyob rau hauv txoj kev qis, whereas nyob rau hauv ib qho synchronous rectifier puck converter nrog ob lub keyboards qhov thib ob hloov pauv cov lus hais saum toj no txuas ntxiv diode.Piv nrog rau cov kev daws teeb meem synchronous, asynchronous rectifiers muaj qhov zoo ntawm kev muab cov tshuaj pheej yig dua, tab sis lawv cov txiaj ntsig tsis yog siab heev.
Siv lub synchronous rectifier topology thiab txuas ib qho sab nraud Schottky diode nyob rau hauv parallel nrog rau qib qis hloov yuav muab qhov ua tau zoo tshaj plaws.Qhov nyuaj dua ntawm qhov kev hloov qis qis no ua rau muaj qhov ua tau zoo vim muaj qhov qis qis qis hauv lub xeev "on" piv rau Schottky diode.Thaum lub sij hawm lub tsev muag khoom (thaum ob lub qhov hluav taws xob tawm), lub sab nraud Schottky diode muaj qhov kev tso tawm qis dua piv rau sab hauv lub rooj vag sab hauv ntawm FET.
3. Sab nraud vs. nyiaj txiag sab hauv
Feem ntau, buck controllers nrog lwm cov keyboards tuaj yeem muab cov nyiaj them rau sab nraud vim lawv tsim nyog rau ntau yam kev siv.Kev them nyiaj sab nraud pab hloov lub voj voog tswj mus rau ntau yam sab nraud xws li FETs, inductors, thiab cov khoom tso tawm.
Rau cov converters nrog kev sib koom ua ke, ob qho tib si sab nraud thiab sab hauv kev them nyiaj feem ntau yog siv.Kev them nyiaj sab hauv ua rau cov txheej txheem kev siv tau sai heev thiab cov tshuaj PCB me me.
Qhov zoo ntawm kev them nyiaj sab hauv tuaj yeem raug suav hais tias yog qhov yooj yim ntawm kev siv (raws li tsuas yog cov zis lim yuav tsum tau teeb tsa), tsim nrawm, thiab cov khoom me me, yog li muab cov tshuaj me me rau cov ntawv thov tam sim no.Qhov tsis zoo yog tias lawv tsis tshua muaj kev hloov pauv thiab cov khoom lim tawm yuav tsum tau subordinated rau kev them nyiaj sab hauv.Kev them nyiaj sab nraud muaj kev hloov pauv ntau dua thiab tuaj yeem hloov kho raws li cov khoom siv lim dej xaiv, thaum cov nyiaj them tuaj yeem yog cov tshuaj me me rau cov dej ntws loj, tab sis daim ntawv thov no nyuaj dua.
4. Tam sim no-hom tswj tiv thaiv voltage-hom tswj
Lub regulator nws tus kheej tuaj yeem tswj tau hauv hom voltage lossis hom tam sim no.Nyob rau hauv voltage hom tswj, qhov tso zis voltage muab thawj lub tswv yim rau lub voj tswj, thiab feedforward them feem ntau yog siv los ntawm kev siv lub input voltage raws li ib tug thib ob tswj voj los txhim khu kev qha cov lus teb;hauv kev tswj hom tam sim no, tam sim no muab cov lus qhia thawj zaug rau lub voj voog tswj.Nyob ntawm kev tswj lub voj, qhov tam sim no tuaj yeem yog cov khoom siv tam sim no, inductor tam sim no, lossis cov zis tam sim no.Qhov thib ob tswj voj yog qhov tso zis voltage.
Kev tswj hom tam sim no muaj qhov zoo ntawm kev muab cov lus teb nrawm nrawm, tab sis yuav tsum tau them nyiaj nqes hav, hloov cov suab nrov lim rau kev ntsuas tam sim no, thiab lub zog poob hauv qhov ntsuas tam sim no.Kev tswj qhov hluav taws xob tsis tas yuav tsum tau them nyiaj nqes nqes thiab muab cov lus teb nrawm nrawm nrog cov nyiaj them poob haujlwm, txawm hais tias cov lus teb hloov pauv tau pom zoo ntawm no los txhim kho kev ua tau zoo, qhov yuam kev amplification Circuit Court yuav xav tau ntau dua bandwidth.
Ob qho tib si tam sim no thiab voltage hom tswj topologies yog tsim nyog rau tuning siv nyob rau hauv feem ntau daim ntaub ntawv.Nyob rau hauv ntau zaus, tam sim no-hom tswj topologies yuav tsum tau ib tug ntxiv tam sim no voj nrhiav kom tau resistor;voltage-hom topologies nrog kev sib koom ua ke pub-forward them ua tiav yuav luag zoo tib yam cov lus teb cov lus teb thiab tsis tas yuav muaj qhov ntsuas tam sim no lub voj voog.Tsis tas li ntawd, kev them nyiaj pub rau pem hauv ntej simplifies kev them nyiaj tsim.Ntau qhov kev txhim kho ib-theem ib zaug tau pom zoo siv voltage-hom tswj topologies.
5. Hloov, MOSFETs thiab MOSFETs
Cov keyboards hauv kev siv niaj hnub no yog txhim kho MOSFETs thiab muaj ntau cov kauj ruam-down/step-down converters thiab controllers uas siv MOSFETs thiab PMOSFET tsav tsheb.MOSFETs feem ntau muab kev ua haujlwm zoo dua li MOSFETs thiab cov tsav tsheb ntawm lub cuab yeej no yog qhov nyuaj dua.Txhawm rau hloov NMOSFET rau thiab tawm, lub rooj vag hluav taws xob ntau dua li qhov hluav taws xob nkag ntawm lub cuab yeej yog xav tau.Cov thev naus laus zis xws li bootstrapping lossis them cov twj tso kua mis yuav tsum tau ua ke, nce tus nqi thiab txo tus nqi pib kom zoo dua ntawm MOSFETs.
Hais txog Khoom
LM46001-Q1 regulator yog ib qho yooj yim-rau-siv synchronous kauj ruam-down DC-DC converter muaj peev xwm tsav mus txog 1 A ntawm load tam sim no los ntawm ib tug input voltage xws li 3.5 V mus rau 60 V. Lub LM46001-Q1 muab tshwj xeeb efficiency, tso zis raug thiab tso tawm voltage nyob rau hauv ib tug heev me me tov loj.Ib tsev neeg txuas ntxiv muaj nyob rau hauv 0.5-A thiab 2-A cov kev xaiv tam sim no hauv cov pob khoom siv tau tus pin-rau-pin.Peak tam sim no hom tswj yog ua hauj lwm kom ua tau yooj yim tswj lub voj kev them nyiaj thiab lub voj voog-los ntawm-lub voj voog tam sim no txwv.Yeem nta xws li programmable switching zaus, synchronization, lub hwj chim-zoo chij, precision enable, sab hauv soft start, expandable soft start, thiab taug qab muab ib tug saj zawg zog thiab yooj yim-rau-siv platform rau ntau yam kev siv.Discontinuous conduction thiab tsis siv neeg zaus txo ntawm lub teeb loads txhim kho lub teeb load efficiency.Tsev neeg xav tau ob peb yam khoom sab nraud thiab kev npaj tus pin tso cai yooj yim, zoo tshaj PCB layout.Cov yam ntxwv kev tiv thaiv muaj xws li thermal shutdown, VCC undervoltage lockout, lub voj voog-los ntawm-lub voj voog tam sim no txwv, thiab kev tiv thaiv luv luv.Cov khoom siv LM46001-Q1 muaj nyob rau hauv 16-pin HTSSOP (PWP) pob (6.6 mm × 5.1 mm × 1.2 mm) nrog 0.65-mm lead suab.Cov cuab yeej yog tus pin-rau-tus pin sib xws nrog LM4360x thiab LM4600x tsev neeg.LM46001A-Q1 version yog optimized rau PFM kev ua haujlwm thiab pom zoo rau cov qauv tshiab.
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