Yekutanga & Nyowani ic LMR14030SDDAR switching regulator yakabatanidzwa chip Electronics Curcuits

tsananguro pfupi:

Iyo LMR14030 ndeye 40 V , 3.5 Nhanho pasi regulator ine yakabatanidzwa yakakwirira-parutivi MOSFET.Iine hupamhi hwekupinza kubva ku4 V kusvika ku40 V, inokodzera akasiyana maapplication kubva kumaindasitiri kuenda kumotokari yemagetsi emagetsi kubva kune asina kudzorwa.Theregulators quiescent current is 40 UA in Sleep-mode, iyo inokodzera bhatiri powered systems.Anultra-yakaderera 1 WA ikozvino mukuvhara mode inogona kuwedzera hupenyu hwebhatiri.Iyo yakakura inogadziriswa switchingfrequency renji inobvumira kana kushanda zvakanaka kana extemalcomponent saizi kuti igadziriswe.Yemukati loopcompensation inoreva kuti mushandisi haana basa rinonetsa rekugadzira loop muripo.Izvi zvinoderedzawo zvinhu zvekunze zvemudziyo .Aprecision inogonesa kupinza inobvumira kurerutsa kweregulator kutonga uye system simba kuteedzera.Chishandiso ichi zvakare chine yakavakirwa-mukati maficha senge cycle-by-cycle yazvino muganho, kupisa kunzwa uye kudzima nekuda kwekunyanya kuparara kwemagetsi, uye kubuda kwekudzivirira kwakawandisa.

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Product Detail

Product Tags

Product Attributes

TYPE	DESCRIPTION
Category	Integrated Circuits (ICs) PMIC - Voltage Regulators - DC DC Switching Regulators
Mfr	Texas Instruments
Series	SIMPLE SWITCHER®
Package	Tepi & Reel (TR) Cheka Tape (CT) Digi-Reel®
SPQ	75Tube
Product Status	Active
Basa	Nhanho-Pasi
Output Configuration	Positive
Topology	Buck
Output Type	Adjustable
Nhamba Yezvinobuda	1
Voltage - Input (Mini)	4V
Voltage - Input (Max)	40V
Voltage - Kubuda (Mini/Yakagadziriswa)	0.8V
Voltage - Kubuda (Max)	28V
Zvazvino - Output	3.5A
Frequency - Kuchinja	200kHz ~ 2.5MHz
Synchronous Rectifier	No
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Nyaya	8-PowerSOIC (0.154", 3.90mm Upamhi)
Supplier Device Package	8-SO PowerPad
Base Product Number	LMR14030

Musiyano

Musiyano uripo pakati peDC inodzorwa switching magetsi emagetsi uye linear magetsi emagetsi netsanangudzo
Musiyano wavo wakakura ndeye mutsara wakadzorwa magetsi ekupa muchubhu (ingave bipolar kana MOSFET) inoshanda mumutsara mamiriro, nepo switching magetsi muchubhu inoshanda munzvimbo inochinja.
1. Tsanangudzo yeDC yakadzora kushandura magetsi
Iko kushandiswa kwemagetsi kunoenderana nemagetsi emagetsi.Kuchinja kwemagetsi kuri kuburikidza nedunhu rekutonga switching chubhu yeyakakwira-kumhanya chiteshi kupfuura uye kucheka-kudzima.DC simba mune yakakwira-frequency AC simba kune transformer yekushandura voltage, nekudaro ichigadzira inodiwa seti kana boka remagetsi!Kuti uzvitaurire zviri nyore, simba rekushandura magetsi ndiro transformer.Kuchinja kwemagetsi kunowanikwa ne: kugadziridzwa kuita DC - inverted muinodiwa voltage AC (kunyanya kugadzirisa voltage) - yozogadziridzwa kuita DC voltage kubuda.

2. Tsanangudzo yemagetsi emagetsi
Mutsetse wemagetsi wemagetsi ishanduro inotanga kudzikisa voltage amplitude yealternating current uye yozoigadzirisa kuburikidza nerectifier circuit kuti iwane pulsed yakananga ikozvino.Inobva yasefa kuti iwane DC voltage ine diki ripple voltage.Kuti uwane yakakwirira chaiyo DC voltage, inofanirwa kudzorwa nevoltage regulator wedunhu.
Chechipiri, mutsauko uripo pakati peiyo inoshanda musimboti weDC inodzorwa switching magetsi uye mutsara magetsi

Nheyo yekushanda yekushandura magetsi.
1. AC simba rekuisa rakasefa nekugadzirisa kuita DC;
2. Kuburikidza nepamusoro-frequency PWM (pulse width modulation) kana pulse frequency modulation (PFM) control switching tube, iyo DC ichawedzerwa kune yekutanga yekushandura transformer;
3. Chechipiri chekushandura transformer inokonzera high-frequency voltage, iyo inogadziriswa uye inonatswa kumutoro;
4. Chikamu chinobuda chinodyiswa zvakare kudunhu rekutonga kuburikidza neimwe dunhu kuti ridzore PWM duty cycle kuti iwane yakagadzikana kubuda.

Nheyo yekushanda yemagetsi emagetsi.
1.Linear simba rekupa rinonyanya kusanganisa frequency transformer, inobuda rectifier sefa, control circuit, protection circuit, etc...
Iyo mutsara magetsi emagetsi ndiyo yekutanga AC simba kuburikidza netransformer voltage, uyezve kuburikidza neinogadzirisa rectifier rectifier sefa kuti uwane iyo isina kugadzikana DC voltage.Kuti uwane yakanyanya kurongeka DC voltage, iyo inobuda voltage inofanirwa kugadziridzwa nevoltage mhinduro.Iyi tekinoroji yemagetsi yakakura kwazvo uye inogona kuwana kugadzikana kwepamusoro nekunyanya kuderera uye pasina kukanganiswa uye ruzha rune magetsi ekuchinja.Nekudaro, chakashata chayo ndechekuti inoda hombe uye yakakura transformer, vhoriyamu uye huremu hweinodiwa sefa capacitor zvakare yakakura kwazvo, uye voltage mhinduro yedunhu iri kushanda mumutsara mamiriro, saka pane imwe voltage inodonha pakugadzirisa. chubhu, mukubuda kweiyo yakakura kushanda ikozvino, zvichiita kuti simba rekushandisa rekugadzirisa chubhu yakakura kwazvo, yakaderera shanduko inoshanda, asiwo kuisa hombe yekupisa singi.Iri magetsi haakodzeri makomputa uye zvimwe zvinodiwa zvemidziyo, zvishoma nezvishoma zvichatsiviwa nekuchinja magetsi.

DC yakadzora switching magetsi uye mutsara magetsi ekupa mune hunhu hwemutsauko.
Izvo zvakakosha uye zvisingabatsiri zvekuchinja magetsi
Mabhenefiti: Saizi diki, huremu (vhoriyamu uye huremu hwe20-30% chete yemagetsi mutsara), kugona kwakanyanya (kazhinji 60-70%, nepo linear magetsi ari 30-40% chete, yavo inopesana nekupindira. , huwandu hwakawanda hwekubuda kwemagetsi, modularity.
Zvakaipa: Nekuda kweiyo yakakwira-frequency voltage inogadzirwa muinverter wedunhu, pane imwe chiyero chekuvhiringidza kune yakatenderedza midziyo.Kudzivirira kwakanaka uye pasi kunodiwa.

Linear magetsi ekupa zvinhu.
Kugadzikana kwepamusoro, diki ripple, kuvimbika kwepamusoro, nyore kugadzira kuita yakawanda-nzira inobuda inoramba ichigadziriswa magetsi.Izvo zvinokanganisa ndezvekuti dzakakura, dzakakura, uye hadzina kunyatsoshanda.Iyi mhando yemagetsi akadzorwa uye kune akawanda marudzi, kubva kumhando yekubuda inogona kukamurwa kuita yakagadziriswa magetsi magetsi, yakadzorwa magetsi emagetsi uye seti yevoltage, iko kudzikamiswa mumhepo yakagadzikana, uye ikozvino (yakagadzikana-yakagadzikana) magetsi.Iko kukosha kwekubuda kunogona kukamurwa kuita yakagadziriswa goho remagetsi, bhendi switch yekugadziridza mhando, uye potentiometer inoramba ichichinjika akati wandei.Kubva pane zvakabuda, chiratidzo chinogona kukamurwa kuita pointer chiratidzo chemhando uye yedhijitari yekuratidzira mhando.

Musiyano uripo pakati peDC-inodzorwa switching magetsi emagetsi uye linear magetsi emagetsi muchikamu chekushandisa
1. Kushandura simba rekupa huwandu hwekushandisa
Kuchinja kwemagetsi emagetsi akazara, hapana mutsauko voltage, unogona kushandisa akasiyana wedunhu topology kuti uwane zvakasiyana zvinobuda zvinodiwa.Iyo yekugadziridza mwero uye yekubuda ripple haina kukwirira semagetsi emagetsi emagetsi, uye kunyatsoita kwakakwira.Inoda akawanda peripheral components uye high cost.Dunhu racho rinenge rakaoma.Kuchinjisa DC-inodzorwa magetsi emagetsi anonyanya kubhururuka-kunopera imwe chete-inopera kumberi, hafu-zambuko, kusunda-kudhonza, uye yakazara-bhiriji redunhu marudzi.Musiyano wakakosha pakati payo uye mutsara wakadzorwa magetsi emagetsi ndewekuti transformer iri mudunhu haishande pakushanda frequency asi pamakumi akati wandei e kilohertz kune akati wandei megahertz.Iyo chubhu yemagetsi haishande munharaunda yemutsara, asi munzvimbo yekuzadza uye yekucheka-kubvisa, kureva mukuchinja mamiriro;iyo switching type DC inodzorwa magetsi inopihwa saka inodanwa.
2. Chiyero chekushandiswa kwemutsara wemagetsi
Linear-regulated magetsi emagetsi anowanzo shandiswa mune yakaderera-voltage application, senge maLDO anoda kusangana neimwe voltage musiyano.Iyo yakabuda voltage regulation rate uye ripple zviri nani, kushanda kwacho kwakadzikira, kudiwa kwezvikamu zveparipheral kushoma, uye mutengo wakaderera.Dunhu iri nyore.

About Product

Iyo LMR14030 ndeye 40 V, 3.5 Nhanho pasi regulator ine yakabatanidzwa yakakwirira-parutivi MOSFET.Iine huwandu hwakakura hwekuisa kubva ku4 V kusvika ku40 V, inokodzera akasiyana maapplication kubva kumaindasitiri kuenda kumotokari yekugadzira magetsi kubva kune asina kudzorwa masosi.Iyo regulator's quiescent current ndeye 40 µA muKurara-modhi, iyo inokodzera bhatiri powered masisitimu.Iyo yakanyanya-yakaderera 1 µA ikozvino mukuvhara mode inogona kuwedzera hupenyu hwebhatiri.Iyo yakakura inogadziriswa switching frequency renji inobvumira ingave inoshanda kana yekunze chikamu saizi kuti igadziriswe.Muripo wemukati weloop zvinoreva kuti mushandisi haana basa rinonetesa rekugadzira loop muripo.Izvi zvinoderedzawo zvikamu zvekunze zvechigadzirwa.Iyo chaiyo inogonesa yekuisa inobvumira kurerutsa yekudzora kudzora uye sisitimu simba kutevedzana.Chishandiso ichi zvakare chine yakavakirwa-mukati maficha senge kutenderera-ne-kutenderera ikozvino muganho, kupisa kunzwa uye kudzima nekuda kwekunyanya kuparara kwesimba, uye kubuda overvoltage kudzivirira.

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