LITLHAKISO TSA ANALOG LT8625SP Silent Switcher e nang le Reference ea Lerata le tlase
TLHALOSO
Pontšo ea potoloho ea 3002A ke 18V, 8A mohato o tlase o lumellanang oa Silent Switcher® 3 o nang le lerata le phahameng haholo, ts'ebetso e phahameng haholo le letsoalo la matla le nang le LT®8625SP. Kenyelletso voltage fapaneng DC3002A ke 2.7V ho 18V. Setlhophiso sa boto ea demo ea kamehla ke 1V ho 8A palo e phahameng ea tlhahiso ea DC hajoale. LT8625SP ke compact, lerata le phahameng haholo, tlhahiso e phahameng haholo, ts'ebetso e phahameng le lebelo le phahameng la synchronous monolithic step-down switching regulator. Motsoako o entsoeng ka mokhoa o ikhethileng oa referense ea lerata e phahameng haholo le meralo ea Silent Switcher ea moloko oa boraro e nolofalletsa LT8625SP ho fihlela ts'ebetso e phahameng le ts'ebetso e ntle ea lerata le pharaletseng. Nako e fokolang ea nako ea 15ns e lumella VIN e phahameng ho fetola VOUT ka maqhubu a phahameng.
Maqhubu a ho fetoha a LT8625SP a ka hlophisoa ka sehanyetsi sa oscillator kapa oache ea kantle ho feta 300kHz ho isa ho 4MHz. Maqhubu a kamehla a potoloho ea demo 3002A ke 2MHz. Pin ea SYNC ho boto ea demo e thehiloe ka ho sa feleng bakeng sa ts'ebetso e tlase ea ripple pulse skip mode. Ho amahanya oache ea kantle, isa JP1 ho SYNC 'me u sebelise oache ea kantle ho terminal ea SYNC. E qobelloang ho Tsoela Pele (FCM) e ka khethoa ka ho tsamaisa JP1 shunt. Setšoantšo sa 1 se bonts'a katleho ea potoloho ka ho kenya letsoho ho 5V le ho kenya letsoho 12V ts'ebetsong ea mokhoa o tsitsitseng o qobelloang (ho kenya letsoho ho tloha VIN terminal). Setšoantšo sa 2 se bontša mocheso oa LT8625SP o nyolohang ho boto ea demo ea DC3002A tlas'a maemo a 6A le 8A a mojaro.
Boto ea demo e kentsoe sefahla sa EMI. Sefahla sena sa EMI se ka kenyelletsoa ka ho sebelisa matla a ho kenyatage boemelong ba VIN_ EMI. Ts'ebetso ea EMI ea boto e bontšoa ho Setšoantšo sa 3. Mohala o mofubelu ho Radiated EMI Performance ke moeli oa CISPR32 Sehlopha sa B. Ntle le ts'ebetso e ntle ea EMI, molaoli o boetse o na le lerata le phahameng haholo ho feta mefuta e mengata ea maqhubu, joalo ka ha ho bonts'itsoe ho Setšoantšo sa 4.
Lethathamo la lintlha tsa LT8625SP le fana ka tlhaloso e felletseng ea karolo e kenyeletsang ts'ebetso le tlhaiso-leseling ea ts'ebeliso. Leqephe la data le tlameha ho baloa hammoho le bukana ena ea demo bakeng sa potoloho ea demo 3002A. LT8625SP e bokelloa ka har'a sephutheloana sa 4mm × 3mm LQFN se nang le mapheo a pepenene le lefu le pepesitsoeng bakeng sa ho hanyetsa mocheso o tlase. Litlhahiso tsa moralo bakeng sa ts'ebetso ea EMI e tlase le ts'ebetso e phahameng ea mocheso li fumaneha karolong ea leqephe la data Layout e tlase ea EMI PCB le Lintlha tsa Thermal.
Moralo files bakeng sa boto ena ea potoloho li fumaneha.
TS'EBETSO TS'OANE
| PARAMETER | MAEMO | MIN | TYP | MAX | LIEKETSENG |
| Keletso Voltage Range VIN | 2.7 | 18 | V | ||
| Khumo Voltage | 0.992 | 1.0 | 1.008 | V | |
| Maqhubu a Fetohang a ho Fetola | 1.93 | 2.0 | 2.07 | MHz | |
| Boholo ba Tlhahiso ea Hona joale | Ho fokotseha hoa hlokahala bakeng sa maemo a itseng a VIN le Thermal | 8 | A | ||
| Katleho | VIN = 12V, fSW = 2MHz, VOUT = 1V ho IOUT = 8A | 75 | % | ||
TS'EBETSO TS'OANE
Setšoantšo sa 1. LT8625SP Demo Circuit DC3002A
Katleho vs Moroalo oa Hona Joale (Kenyo e tsoang ho VIN Terminal)
Setšoantšo sa 2. Mocheso o Phahamisang vs VIN
Setšoantšo sa 3. LT8625SP Demo Circuit DC3002A EMI Performance
(12V Kenyo ho 1.0V Output ho 3A, fSW = 2MHz)
Radiated EMI Performance
(CISPR32 Radiated Emission Test with Class B Limits)
Setšoantšo sa 4. LT8625SP Demo Circuit DC3002A Lerata
Spectral Density (12V Kenyo ho 1.0V Output, fSW = 2MHz)
Lerata la Spectral Density
TSELA E QALANG HO QALA
Pontšo ea potoloho ea 3002A e bonolo ho e hlophisa ho lekola ts'ebetso ea LT8625SP. Ka kopo sheba Setšoantšo sa 5 bakeng sa ho hlophisa lisebelisoa hantle 'me u latele mekhoa ea tlhahlobo e ka tlase:
HLOKOMELA: Ha o metha phallo kapa phallo ea matlatage ripple, ho lokela ho nkoa ka hloko ho qoba sebaka se selelele sa pele ho probe ea oscilloscope. Lekanya tlhahiso ea matlatage ripple ka ho ama ntlha ea probe ka ho toba ho pholletsa le capacitor ea tlhahiso. For input voltage ripple le remote output voltage ripple, li ka boela tsa lekanyetsoa ka lihokelo tsa SMA ka VIN_SENSE le VO_SENSE. Setšoantšo sa 7 se bonts'a sekhahla sa tlhahisotage ripple e lekantsoeng ho capacitor ea C20 ka sehokelo sa VO_SENSE SMA.
- Beha JP1 boemong ba FCM.
- Ha motlakase o tima, hokela phepelo ea motlakase ho VIN_EMI (E1) le GND (E2). Haeba filthara ea EMI e sa batloe, hokela phepelo ea motlakase lipakeng tsa VIN (E17) le GND (E18) turrets.
- Ha motlakase o tima, hokahanya mojaro ho tloha VOUT (E19) ho ea ho GND (E20).
- Hokela DMM lipakeng tsa lintlha tsa tekolo: VIN_ SENSE (E3) le SENSE_GND (E4) ho beha leihlo matla a ho kenyatage. Hokela DMM lipakeng tsa VO_SENSE (E10) le SENSE_GND (E11) ho beha leihlo matla a tlhahiso.tage.
- Bulela phepelo ea motlakase nakong ea ho kenya. ELA HLOKO: Etsa bonnete ba hore tlhahiso ea voltage ha e fete 18V.
- Hlahloba sephetho se nepahetseng sa voltage (VOUT = 1V)
HLOKOMELA: Haeba ho se na tlhahiso, khaola moroalo ka nakoana ho etsa bonnete ba hore mojaro ha oa beoa holimo haholo. - Hang ha ho kenya le ho hlahisa voltagli-es li thehiloe hantle, lokisa mojaro oa hona joale ka har'a sebaka sa ts'ebetso sa 0A ho isa ho 8A max ka mocha. Ela hloko tlhahiso ea matlatage regulation, tlhahiso voltage ripples, switching node waveform, mojaro karabelo ea nakoana le likarolo tse ling.
- Oache ea kantle e ka eketsoa ho terminal ea SYNC ha ts'ebetso ea SYNC e sebelisoa (JP1 sebakeng sa SYNC). RT resistor (R4) e lokela ho khethoa ho beha LT8625SP switching frequency bonyane 20% ka tlase ho SYNC frequency e tlase.
LIEKETSENG TŠEBELETSO E TLOAELEHANG
Setšoantšo sa 6. LT8625SP Demo Circuit DC3002A Output Voltage Ripple Measuren through J6 (12V Input, IOUT = 8A, Full BW)
Setšoantšo sa 7. Thermal Performance ho VIN = 12V, fSW = 2MHz, VOUT = 1.0V, ILOAD = 8A, TA = 25 ° C
Setšoantšo sa 8. Likarabo tsa Nakoana ka Mehato ea Mojaro 0A ho isa ho 4A ho 0A ho dl/dt = 4A/µs
MAHLOMOLA LEROTHA
| ITEM | QTY | TŠEBELETSO | KAROLO TLHALOSO | MOHLAHLI/KAROLO YA KAROLO |
| Likarolo tse Hlokehang tsa Potoloho |
| 1 | 1 | C1 | CAP., 1µF, X7R, 25V, 10%, 0603 | TAIYO YUDEN, TMK107B7105KA-T |
| 2 | 1 | C2 | CAP., 2.2µF, X7S, 25V, 10%, 0603 | MURATA, GRM188C71E225KE11D |
| 3 | 2 | C3, C6 | CAP., 22µF, X7R, 25V, 10%, 1210 | Tlhaloso: AVX 12103C226KAT2A |
| 4 | 1 | C4 | CAP., 100µF, ALUM ELECT, 25V, 20%, 6.3mm × 7.7mm, CE-BS SERIES | SUN ELECTRONIC INDUSTRIES CORP, 25CE100BS |
| 5 | 1 | C5 | CAP., 4.7µF, X7S, 50V, 10%, 0805 | MURATA, GRM21BC71H475KE11K |
| 6 | 0 | C7, C9, C12, C13, C16, C22 | CAP., KHETHO, 0603 | |
| 7 | 1 | C8 | CAP., 0.01µF, X7R, 50V, 10%, 0603 | Tlhaloso: AVX 06035C103KAT2A |
| 8 | 1 | C10 | CAP., 0.1µF, X7R, 25V, 10%, 0603 | Tlhaloso: AVX 06033C104KAT2A |
| 9 | 1 | C11 | CAP., 82pF, X7R, 50V, 10%, 0603 | KEMET, C0603C820K5RAC7867 |
| 10 | 3 | C14, C18, C19 | CAP., 2.2µF, X7S, 4V, 10%, 0603 | TDK, CGB3B1X7S0G225K055AC |
| 11 | 1 | C15 | CAP., 22µF, X7R, 4V, 10%, 1206, AEC-Q200 | TAIYO YUDEN, AMK316AB7226KLHT |
| 12 | 1 | C20 | CAP., 100µF, X5R, 4V, 20%, 1206 | TAIYO YUDEN, AMK316BJ107ML-T |
| 13 | 1 | C21 | CAP., 10µF, X7S, 4V, 20%, 0603 | TDK, C1608X7S0G106M080AB |
| 14 | 2 | C23, C24 | CAP., 4.7µF, FEEDTHRU, 10V, 20%, 0805, 3-TERM, SMD, EMI FILTER, 6A | MURATA, NFM21PC475B1A3D |
| 15 | 11 | E1-E6, E8-E12 | NTLHA YA TEKO, KOPANANA YA BORSE, TIN PLATING, 2.00mm
× 1.20mm × 1.40mm, VERT, SMT, TLHAHO |
HARWIN, S2751-46R |
| 16 | 4 | EA-17-E20 | NTLHA YA TEKOLO, SILVER PLATE, PHOSPHOR BRONZE, 3.81mm × 2.03mm, 2.29mm H, SMT | KEYSTONE, 5019 |
| 17 | 1 | FB1 | IND., 60Ω AT 100MHz, PWR, FERRITE BEAD, 25%, 5100mA, 15mΩ, 0603 | WURTH ELEKTRONIK, 74279228600 |
| 18 | 2 | J5, j6 | CONN., RF/COAX, SMA JACK, FEMALE, 1 PORT, VERT, ST, SMT, 50Ω, Au | MOLEX, 0732511350 |
| 19 | 2 | JP1, JP2 | CONN., HDR, MALE, 2 × 3, 2mm, VERT, ST, THT | WURTH ELEKTRONIK, 62000621121 |
| 20 | 1 | L2 | IND., 1µH, PWR, SHIELDED, 20%, 4A, 52.5mΩ, 1616AB, IHLP-01 SERIES | Setšoantšo sa IHLP1616ABER1R0M01 |
| 21 | 0 | L3 | IND., KHETHO | |
| 22 | 1 | L4 | IND., 0.3µH, PWR, SHIELDED, 20%, 18.9A, 3.1mΩ, 4.3mm × 4.3mm, XEL4030, AEC-Q200 | Tlhaloso: COILCRAFT XEL4030-301MEB |
| 23 | 4 | MP1-MP4 | STANDOFF, NYLON, SNAP-ON, 0.375 ″ | KEYSTONE, 8832 |
| 24 | 1 | R1 | RES., 499Ω, 1%, 1/10W, 0603, AEC-Q200 | VISHAY, CRCW0603499RFKEA |
| 25 | 1 | R2 | RES., 1Ω, 1%, 1/10W, 0603, AEC-Q200 | Setšoantšo sa CRCW06031R00FKEA |
| ITEM | QTY | REFERENCE | PART TLHALOSO | MANUFACTURER/PARTNUMBER |
| 26 | 2 | R3. R12 | RES., 100k, 1%, 1/10W, 0603, AEC- 0200 | VISHAYC, RCW0603100KFKEA |
| 27 | 1 | R4 | RES., 47.Sk, 1%,1/10W. 0603 | VISHAYC. RCW060347K5FKEA |
| 28 | 0 | RS, R13·R17 | RES., KHETHO, 0603 | |
| 29 | 1 | R6 | RES., 10k, 1%.1/10W, 0603, AEC-0200 | VISHAYC. RCW060310KOFKEA |
| 30 | 1 | R8 | RES., OQ, 3/4W, 1206, PULSE PROOF, HIGH PWR, AEC·0200 | VISHA,YCRCWl206COOOZOEAHP |
| 31 | 2 | Rl 0, R11 | RES., 49.9k,1%,1/1OW, 0603 | VISHAYC. RCW060349K9FKEA |
| 32 | 1 | LIKHOPO | RES., OQ, 1/10W, 0603, AEC·0 200 | VISHAYC, RCW06030000ZOEA |
| 33 | 1 | Ul | IC, SYN. MOHATO · TLAS'A Silent Switcher. LOFN•20 | LITŠOANTŠISO TSA ANALOGE, LT8625SPJVIRTMPBF |
| 34 | 2 | XJP1, XJP2 | CONN.. TSOELA. MOSALI. 2 POS, 2mm | WURTH ELEKTRONIK, 60800213421 |
SETSEKI SEKEMO
TS'ELISO TS'OANE
| TŠEPO | LETSATSI | TLHALOSO | LEQEPHE NUMBER |
| A | 5/24 | Tokollo ea pele | — |
Tlhokomeliso ea ESD
ESD (electrostatic discharge) sesebelisoa se hlokolosi. Lisebelisoa tse lefshoang le liboto tsa potoloho li ka tsoa ntle le ho lemoha. Leha sehlahiswa sena se na le dipalo tse nang le tokelo ya molao kapa tsa tshireletso, tshenyo e ka nna ya hlaha ho disebediswa tse nang le matla a phahameng a ESD. Ka hona, mehato e nepahetseng ea ESD e lokela ho nkuoa ho qoba ho senyeha ha ts'ebetso kapa tahlehelo ea ts'ebetso.
Melao le Maemo a Molao
Ka ho sebelisa boto ea tlhahlobo eo ho buisanoang ka eona mona (hammoho le lisebelisoa life kapa life, litokomane tsa likarolo kapa lisebelisoa tsa ts'ehetso, "Evaluation Board"), o lumela ho tlamahanngoa le lipehelo le lipehelo tse boletsoeng ka tlase ("Tumellano") ntle le haeba o rekile Boto ea Tlhahlobo, moo Melao le Maemo a Thekiso a Thekiso ea Analog a tla laola. Se ke oa sebelisa Boto ea Tlhahlobo ho fihlela u balile le ho lumellana le Tumellano. Tšebeliso ea hau ea Boto ea Tlhahlobo e tla bontša ho amohela Tumellano ea hau. Tumellano ena e entsoe ke uena (“Customer”) le Analog Devices, Inc. ("ADI"), e nang le sebaka sa eona sa mantlha sa khoebo ho One Technology Way, Norwood, MA 02062, USA. Ho ipapisitsoe le lipehelo le lipehelo tsa Tumellano, ADI ka hona e fa Moreki laesense ea mahala, e lekanyelitsoeng, ea botho, ea nakoana, e sa khetheheng, e ke keng ea fetisetsoa, le e ke keng ea fetisetsoa ho sebelisa Boto ea Tlhahlobo BAKENG SA TŠEBELETSO FEELA. Moreki o utloisisa le ho lumela hore Boto ea Tekolo e fanoe ka sepheo se le seng le se ikhethileng se boletsoeng ka holimo, 'me e lumela ho se sebelise Boto ea Litlhahlobo molemong ofe kapa ofe. Ho feta moo, laesense e fanoeng e etsoa ka mokhoa o hlakileng ho ipapisitse le meeli e latelang: Moreki ha a na ho (i) hira, ho hirisa, ho hlahisa, ho rekisa, ho fetisa, ho abela, ho fana ka lengolo la tumello, kapa ho aba Boto ea Tlhahlobo; le (ii) ho dumella Mokga ofe kapa ofe wa Boraro ho fihlella Boto ya Tlhatlhobo. Joalo ka ha le sebelisitsoe mona, lentsoe "Mokha oa Boraro" le kenyelletsa mokhatlo ofe kapa ofe ntle le ADI, Moreki, basebetsi ba bona, basebetsi le baeletsi ba ka tlung. Boto ea Tlhahlobo HA E rekisetsoe Moreki; litokelo tsohle tse sa fanoang ka ho hlaka mona, ho kenyeletsoa beng ba Boto ea Tlhahlobo, li bolokiloe ke ADI. TIISETSO. Tumellano ena le Boto ea Tlhahlobo kaofela li tla nkoa e le litaba tsa lekunutu le tsa botho tsa ADI. Moreki a ka se senole kapa a fetisetsa karolo efe kapa efe ea Boto ea Tekolo ho motho ofe kapa ofe ka lebaka lefe kapa lefe. Ha ho khaotsoe ho sebelisa Boto ea Tlhahlobo kapa Tumellano ena e felisitsoe, Moreki o lumela ho khutlisetsa Boto ea Tlhahlobo ho ADI hang-hang. KEKELETSO LITHIBELO. Moreki ha a lokela ho qhaqholla, ho qhaqholla kapa ho kgutlisetsa morao ditjhepisi tsa moenjinere ho Boto ya Tekolo. Moreki o tla tsebisa ADI ka tšenyo leha e le efe e etsahetseng kapa liphetoho leha e le life kapa liphetoho tseo e li etsang ho Boto ea Tlhahlobo, ho kenyeletsoa empa e sa felle feela ka ho rekisa kapa ntho leha e le efe e amang litaba tsa Boto ea Tlhahlobo. Litokiso ho Boto ea Litlhahlobo li tlameha ho ikamahanya le molao o sebetsang, ho kenyeletsoa empa eseng feela ho RoHS Directive. PHEELLO. ADI e ka emisa Tumellano ena ka nako efe kapa efe ha e fana ka tsebiso e ngotsoeng ho Moreki. Moreki o lumela ho khutlela ho ADI Boto ea Tlhahlobo ka nako eo. MOELI MOLIMELO. LEBOTO LA HO HLAHLOBA LE FUMANETSOENG MONA KATLASE LE FUMANA “JOALOKAHA LE TENG” MME ADI HA E ETSE LITIISETSO KAPA LITEMELO TSA MOFUTA OFE KA HLOKO HO LONA. ADI HAHOLO E HLOKOMELA LITEMELETSO, LITUMELO, LITIISETSO, KAPA LITIISETSO, TSE BONANG KAPA TSE FIHLENG, TSE Amanang le LEBOTO LA TLHOKOMELISO, EMPA HA LI TLALETSOE, TIISETSO E FUMANEHILENG EA MERCHANTABILITY, MERCHANTABILITY, MERCHANTABILITY, HO SA NYATSOE LITOKELO TSA LERUTO LA MAHLALE. HA HO TSAMAYA ADI LE BA LASESESENSE BA YONA BA TLA BA MOIKARATO OA KETSAHALO EFE KAPA EFE, E KHETHEHILENG, E TSAMAEA, KAPA E TLA LATELANG HO HLAHALA KA THOO EA MOREEKI KAPA TŠEBELISO EA LEBOTO LA TLHOKOMELISO, HO kenyeletsoa EMPA E SA LEKELETSO EA LITEFELETSO TSA TAHLEHELO, LITEFO. THABELO MOLEMO. MOLATO OA KAOFELA OA ADI HO TSOA MANG KAPA MANG LE LIBAKA TSOHLE E TLA LEKELISOA HO BOLELLO EA LIKERERA TSE LE LEKOELENG ($100.00). THEKISO. Moreki o dumela hore e ka se romele Boto ya Ditekolo ka kotloloho kapa ka tsela e sa tobang naheng e nngwe, le hore e tla ikamahanya le melao le melawana e sebetsang ya United States e amanang le thomelontle. TS'ELISO MOLAO. Tumellano ena e tla laoloa le ho hlalosoa ho ea ka melao ea motheo ea Commonwealth ea Massachusetts (ho sa kenyelelitsoe likhohlano tsa melao ea molao). Mehato efe kapa efe ea molao mabapi le Tumellano ena e tla mameloa makhotleng a mmuso kapa a mmuso a nang le matla a ho laela Suffolk County, Massachusetts, 'me Moreki o ipeha tlas'a bolaoli le sebaka sa makhotla a joalo.
Litokomane / Lisebelisoa
 |
LITLHAKISO TSA ANALOG LT8625SP Silent Switcher e nang le Reference ea Lerata le tlase [pdf] Buka ea Taelo LT8625SP Silent Switcher e nang le Reference ea Low Noise Reference, LT8625SP, Silent Switcher e nang le Reference Low Noise Reference, Switcher e nang le Reference ea Lerata le tlase, Reference ea Lerata le tlase, Reference ea Lerata, Reference |