Ngwaọrụ Analog LT8625SP Silent Switcher nwere ntụaka mkpọtụ dị ala
Nkọwa
Ihe ngosi sekit 3002A bụ 18V, 8A synchronous steepụ gbadara Silent Switcher® 3 nwere mkpọtụ ultralow, arụmọrụ dị elu na njupụta ike na-egosipụta LT®8625SP. Ntinye voltage nso nke DC3002A bụ 2.7V ka 18V. Ntọala bọọdụ ngosi ndabara bụ 1V na 8A kacha elu DC ugbu a. The LT8625SP bụ kọmpat, ultralow mkpọtụ, ultralow emission, elu arụmọrụ na elu na-agba synchronous monolithic steepụ mgbada regulator. Ngwakọta ahaziri iche iche nke ntụnye mkpọtụ ultralow na usoro nke atọ Silent Switcher architecture na-enyere LT8625SP aka iru arụmọrụ dị elu yana ọmarịcha mkpọtụ mkpọtụ. Opekempe na oge nke 15ns na-enye ohere VIN dị elu ka ọ bụrụ ntụgharị VOUT dị ala na ugboro dị elu.
Enwere ike ịhazi ugboro ngbanwe LT8625SP site na oscillator resistor ma ọ bụ elekere mpụga karịa 300kHz ruo 4MHz. Oge ndabara nke sekit ngosi 3002A bụ 2MHz. A gbanyere ntụtụ SYNC dị na bọọdụ ngosi site na ndabara maka ịrụ ọrụ ọnọdụ mwụda pulse dị ala. Iji mekọrịta na elekere mpụga, bugharịa JP1 gaa na SYNC wee tinye elekere mpụga na ọdụ SYNC. Enwere ike ịhọrọ ọnọdụ na-aga n'ihu na-amanye (FCM) site na ibugharị JP1 shunt. Ọnụọgụ 1 na-egosi arụmọrụ nke sekit na ntinye 5V na ntinye 12V na arụ ọrụ na-aga n'ihu na-amanye (ntinye sitere na VIN ọnụ). Ọgụgụ 2 na-egosi okpomọkụ LT8625SP na-ebili na bọọdụ ngosi DC3002A n'okpuru ọnọdụ ibu 6A na 8A.
Ihe ngosi ngosi nwere ihe nzacha EMI arụnyere. Enwere ike itinye nzacha EMI a site n'itinye ntinye voltage na ọdụ VIN_EMI. E gosipụtara arụmọrụ EMI nke bọọdụ na eserese 3. Ahịrị uhie na Radiated EMI Performance bụ oke CISPR32 Klas B. Na mgbakwunye na arụmọrụ EMI mara mma, onye na-ahụ maka njikwa na-egosipụtakwa mkpọtụ ultralow n'ọtụtụ oke ugboro, dịka egosiri na eserese 4.
Mpempe akwụkwọ data LT8625SP na-enye nkọwa zuru oke nke akụkụ ahụ gụnyere ozi ọrụ na ngwa. A ga-agụrịrị akwụkwọ data ahụ yana akwụkwọ ntuziaka ngosi maka demo circuit 3002A. A na-agbakọta LT8625SP na ngwugwu 4mm × 3mm LQFN nwere paịlị ekpughere ma kpughee anwụ maka obere nguzogide okpomọkụ. Atụmatụ nhazi maka ịrụ ọrụ EMI dị ala yana ịrụ ọrụ ọkụ kacha dị na ngalaba mpempe akwụkwọ data Low EMI PCB Layout and thermal considerations.
Nhazi files maka bọọdụ sekit a dị.
Nchịkọta arụmọrụ
| PARAMETER | Ọnọdụ | MIN | Ụdị | MAX | UNITS |
| Ntinye Voltagna nso nso VIN | 2.7 | 18 | V | ||
| Mmepụta Voltage | 0.992 | 1.0 | 1.008 | V | |
| Ugboro ngbanwe nke an-kpọ | 1.93 | 2.0 | 2.07 | MHz | |
| Mbupute kacha ugbu a | Derating dị mkpa maka ụfọdụ VIN na okpomọkụ ọnọdụ | 8 | A | ||
| Ịrụ ọrụ | VIN = 12V, fSW = 2MHz, VOUT = 1V na IOUT = 8A | 75 | % | ||
Nchịkọta arụmọrụ
Ọgụgụ 1. LT8625SP ngosi Circuit DC3002A
arụmọrụ vs Ibu Ibu ugbu a (ntinye sitere na VIN Terminal)
Ọgụgụ 2. Ọnọdụ okpomọkụ na-ebili vs VIN
Ọgụgụ 3. LT8625SP ngosi Circuit DC3002A EMI Performance
(Ntinye 12V gaa na 1.0V mmepụta na 3A, fSW = 2MHz)
Arụmọrụ EMI Radiated
(CISPR32 Radiated Emission Ule nwere oke klaasị B)
Ọgụgụ 4. LT8625SP ngosi Circuit DC3002A mkpọtụ
Njupụta Spectral (Ntinye 12V gaa na mmepụta 1.0V, fSW = 2MHz)
Njupụta Spectral Noise
Ngwa ịmalite usoro
Ihe ngosi sekit 3002A dị mfe ịtọlite iji nyochaa arụmọrụ nke LT8625SP. Biko rụtụ aka na foto 5 maka nhazi akụrụngwa kwesịrị ekwesị ma soro usoro nnwale ndị a:
IHE: Mgbe ị na-atụ ntinye ma ọ bụ mmepụta voltage ripple, a ga-akpachapụ anya ka ịzenarị ndu ogologo ala na nyocha oscilloscope. Tule mmepụta voltage ripple site na-emetụ n'ọnụ nyocha ozugbo gafee capacitor mmepụta. Maka ntinye voltage ripple na remote mmepụta voltagE ripple, a nwekwara ike tụọ ha site na njikọ SMA site na VIN_SENSE na VO_SENSE. Ọgụgụ 7 na-egosi mmepụta voltage ripple tụrụ na mmepụta capacitor C20 site na njikọ VO_SENSE SMA.
- Tinye JP1 n'ọkwa FCM.
- Ọ bụrụ na gbanyụọ ọkụ, jikọọ ọkụ ntinye na VIN_EMI (E1) na GND (E2). Ọ bụrụ na achọghị ihe nzacha EMI ntinye, jikọọ ntinye ike n'etiti VIN (E17) na GND (E18) turrets.
- Mgbe agbanyụchara, jikọọ ibu site na VOUT (E19) gaa na GND (E20).
- Jikọọ DMM n'etiti ebe ule ntinye: VIN_ SENSE (E3) na SENSE_GND (E4) ka nyochaa vol.tage. Jikọọ DMM n'etiti VO_SENSE (E10) na SENSE_GND (E11) iji nyochaa mpụta vol.tage.
- Gbanwuo ọkụ ọkụ na ntinye. IHE: Gbaa mbọ hụ na ntinye voltage anaghị agafe 18V.
- Lelee maka mmepụta voltage (VOUT = 1V)
IHE: Ọ bụrụ na enweghị mmepụta, kwụsịtụ ibu ahụ nwa oge ka ijide n'aka na ebughị ibu dị elu. - Ozugbo ntinye na mmepụta voltages na-nke ọma guzosie ike, mezie ibu ugbu a n'ime ọrụ nso nke 0A ka 8A max kwa ọwa. Lelee mmepụta voltage iwu, mmepụta voltage ripples, ịgbanwee node waveform, ibu ihe na-agafe agafe na paramita ndị ọzọ.
- Enwere ike itinye elekere mpụga na ọdụ SYNC mgbe ejiri ọrụ SYNC (JP1 na ọnọdụ SYNC). Ekwesịrị ịhọrọ onye na-emegide RT (R4) ka ịtọọ ugboro ngbanwe LT8625SP ọbụlagodi 20% n'okpuru ugboro SYNC kacha ala.
ÀMMADỤ ỌMỤMỤ ỌMA
Ọgụgụ 6. LT8625SP ngosi Circuit DC3002A mmepụta Voltage Ripple tụrụ site na J6 (Ntinye 12V, IOUT = 8A, BW zuru ezu)
Ọgụgụ 7. Ọrụ okpomọkụ na VIN = 12V, fSW = 2MHz, VOUT = 1.0V, ILOAD = 8A, TA = 25 ° C
Ọgụgụ 8. Nzaghachi na-agafe agafe nwere nzọụkwụ ibu 0A ruo 4A ruo 0A na dl/dt = 4A/µs
ISI NIILE
| ITEM | QTY | Ntụaka | Nkọwa akụkụ | Onye nrụpụta/NỌMBA |
| Ngwa sekit achọrọ |
| 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 | AVX, 12103C226KAT2A |
| 4 | 1 | C4 | CAP., 100µF, ALUM ELECT, 25V, 20%, 6.3mm × 7.7mm, CE-BS Series | Ụlọ ọrụ SUN ELECTRONIC INDUSTRIES CORP |
| 5 | 1 | C5 | CAP., 4.7µF, X7S, 50V, 10%, 0805 | MURATA, GRM21BC71H475KE11K |
| 6 | 0 | C7, C9, C12, C13, C16, C22 | Isi., Nhọrọ, 0603 | |
| 7 | 1 | C8 | CAP., 0.01µF, X7R, 50V, 10%, 0603 | AVX, 06035C103KAT2A |
| 8 | 1 | C10 | CAP., 0.1µF, X7R, 25V, 10%, 0603 | 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 | IHE Nnwale, Kpọtụrụ Brass, TIN Plating, 2.00mm
× 1.20mm × 1.40mm, VERT, SMT, NATURAL |
HARWIN, S2751-46R |
| 16 | 4 | E17-E20 | IHE Nnwale, Efere Ọlaọcha, Ọlaọcha PHOSPHOR, 3.81mm × 2.03mm, 2.29mm H, SMT | Isi okwu, 5019 |
| 17 | 1 | FB1 | IND., 60Ω NA 100MHz, PWR, FERITE Bead, 25%, 5100mA, 15mΩ, 0603 | WURTH ELEKTRONIK, 74279228600 |
| 18 | 2 | NKWO, J5 | CONN., RF/COAX, SMA Jack, nwanyị, 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 Usoro | VISHAY, IHLP1616ABER1R0M01 |
| 21 | 0 | L3 | IND., Nhọrọ | |
| 22 | 1 | L4 | IND., 0.3µH, PWR, SHIELDED, 20%, 18.9A, 3.1mΩ, 4.3mm × 4.3mm, XEL4030, AEC-Q200 | COILCRAFT, XEL4030-301MEB |
| 23 | 4 | MP1-MP4 | STANDOFF, NYLON, SNAP-ON, 0.375 ″ | Isi okwu, 8832 |
| 24 | 1 | R1 | RES., 499Ω, 1%, 1/10W, 0603, AEC-Q200 | VISAY, CRCW0603499RFKEA |
| 25 | 1 | R2 | RES., 1Ω, 1%, 1/10W, 0603, AEC-Q200 | VISAY, CRCW06031R00FKEA |
| ITEM | QTY | REFERENCE | PART Nkọwa | MANUFACTURER/PARTNọmba |
| 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., Nhọrọ, 0603 | |
| 29 | 1 | R6 | RES., 10k, 1%1/10W, 0603, AEC-0200 | VISHAYC. RCW060310KOFKEA |
| 30 | 1 | R8 | RES., OQ, 3/4W, 1206, PULSE PROF, ELU PWR, AEC·0200 | VISHA,YCRCWl206COOOZOEAHP |
| 31 | 2 | Rl 0, R11 | RES., 49.9k,1%,1/1OW, 0603 | VISHAYC. RCW060349K9FKEA |
| 32 | 1 | RIB | RES., OQ, 1/10W, 0603, AEC·0 200 | VISAYC, RCW06030000ZOEA |
| 33 | 1 | Ul | IC, SYN. Ntụpụ ụkwụ · ala mgba ọkụ. LOFN •20 | Ngwaọrụ Analog, LT8625SPJVIRMPBF |
| 34 | 2 | XJP1, XJP2 | CONN.. SHUNT. NWANYI. 2 POS, 2mm | WURTH ELEKTRONIK, 60800213421 |
AKWHEKWỌ DIAGRAM
AKỤKỌ NKWUO
| MKPUGHE | ỤBỌCHỊ | Nkọwa | Nọmba ibe |
| A | 5/24 | Ntọhapụ mbụ | - |
Akpachara anya ESD
ESD (electrostatic drainage) ngwaọrụ nwere mmetụta. Ngwa chaja na bọọdụ sekit nwere ike ịpụpụ na-enweghị nchọpụta. Ọ bụ ezie na ngwaahịa a nwere ikike sekit nchebe ma ọ bụ sekit nchebe, mmebi nwere ike ime na ngwaọrụ ndị nwere ESD ike dị elu. Ya mere, ekwesịrị ịkpachapụ anya ESD kwesịrị ekwesị iji zere mmebi arụmọrụ ma ọ bụ enweghị ọrụ.
Usoro na ọnọdụ iwu
Site na iji bọọdụ nyocha a tụlere ebe a (yana ngwa ọ bụla, akwụkwọ akụrụngwa ma ọ bụ ihe nkwado, “Evaluation Board”), ị na-ekwenye na usoro na ọnọdụ ndị edepụtara n'okpuru (“Agreement”) ga-ejide gị ma ọ bụrụ na ị zụtala ya. Board Evaluation, nke ikpe na ụkpụrụ na ọnọdụ nke ire ihe Analog Devices ga-achị. Ejila Board Evaluation ruo mgbe ị gụrụ ma kwenye na Agreement. Ojiji gị nke Board Evaluation ga-egosi nnabata gị nke Agreement. Emere nkwekọrịta a n'etiti gị ("Onye ahịa") na Ngwaọrụ Analog, Inc. ("ADI"), ya na ebe azụmahịa ya bụ isi na One Technology Way, Norwood, MA 02062, USA. N'okpuru usoro na ọnọdụ nke Agreement, ADI ugbu a na-enye ndị ahịa ihe n'efu, oke, nkeonwe, nwa oge, nke na-abụghị nke a na-apụghị ịgbagha agbagha, ikike enweghị ike ịnyefe iji jiri Board Evaluation for Evaluation PurPOSES NAN. Onye ahịa ghọtara wee kweta na ewepụtara Board Evaluation maka naanị na naanị ebumnuche a kpọtụrụ aha n'elu, ma kweta na ịghara iji Board Evaluation maka ebumnuche ọ bụla ọzọ. Ọzọkwa, akwụkwọ ikike enyere bụ nke enyere n'okpuru oke oke ndị a: Onye ahịa agaghị (i) ịgbazite, ịgbazinye ego, gosipụta, ree, nyefe, kenye, inye ikike, ma ọ bụ kesaa Board Evaluation; na (ii) kwe ka onye nke atọ ọ bụla nweta Board Evaluation. Dị ka e ji mee ihe n'ime ebe a, okwu ahụ bụ "Ndị ọzọ nke atọ" gụnyere ihe ọ bụla ọzọ karịa ADI, ndị ahịa, ndị ọrụ ha, ndị mmekọ na ndị na-ahụ maka ụlọ. A naghị ere Board Evaluation nye onye ahịa; Ikike niile enyeghị nke ọma n'ime ebe a, gụnyere nwe nke Board Evaluation, bụ ADI dobere. Nzuzo. Nkwekọrịta a na Board Evaluation ka a ga-ewere dị ka ozi nzuzo na nke ADI. Onye ahịa enweghị ike igosipụta ma ọ bụ bufee akụkụ ọ bụla nke Board Evaluation na ndị ọzọ ọ bụla maka ihe kpatara ya. Mgbe a kwụsịrị iji Board Evaluation ma ọ bụ nkwụsị nke nkwekọrịta a, onye ahịa kwetara iweghachite Board Evaluation ozugbo na ADI. Mgbochi agbakwunyere. Onye ahịa enweghị ike ịkwasa, chịkọta ma ọ bụ tụgharịa ibe injinia na Board Evaluation. Onye ahịa ga-agwa ADI maka mmebi ọ bụla mebiri ma ọ bụ mgbanwe ọ bụla ma ọ bụ mgbanwe ọ na-eme na Board Evaluation, gụnyere ma ọnweghị oke na ire ere ma ọ bụ ọrụ ọ bụla ọzọ na-emetụta ọdịnaya nke Board Evaluation. Mgbanwe na Board Evaluation ga-agbasorịrị iwu dị mkpa, gụnyere mana ọnweghị oke na ntuziaka RoHS. Nkwụsị. ADI nwere ike ịkwụsị nkwekọrịta a n'oge ọ bụla mgbe inye ndị ahịa ozi ederede. Onye ahịa kwetara ịlaghachi na ADI Board Evaluation n'oge ahụ. MKWU nke ibu. A na-enye bọọdụ nleba anya n'okpuru ebe a “Dị ka ọ dị” yana ADI emeghị ka ọ nweghị akwụkwọ ikike ma ọ bụ nnochite anya nke ụdị ọ bụla na-asọpụrụ ya. ADI KPỌPỌPỤTARA NKỌPỌTA Nnọchiteanya ọ bụla, nkwado, KWESỊRỊ, ma ọ bụ akwụkwọ ikike, KWESỊRỊ ma ọ bụ KWESỊRỊ, metụtara bọọdụ nyocha gụnyere, mana ọnweghị oke na, akwụkwọ ikike ikike nke ụlọ ahịa, Ebumnobi ma ọ bụ enweghị mmegide nke ikike ikike ọgụgụ isi. Ọ BỤGHỊ ihe omume ADI na ndị na-enye ya ikikere ga-akwụ ụgwọ maka mmebi iwu ọ bụla, nke pụrụ iche, nke ezoghị ọnụ, ma ọ bụ nke ga-esi na ya pụta site n'inweta onye ahịa ma ọ bụ iji bọọdụ nyocha, gụnyere achụmnta ego, na-ebunye ego. Ụrụ ọrụ ma ọ bụ mgbaghara nke ọdịmma. Mkpokọta ibu ADI si n'aka ihe ọ bụla na ihe niile ga-echitere ọnụ ahịa otu narị US dollar ($100.00). Mbupu. Onye ahịa kwenyere na ọ gaghị ebupụ Board Evaluation ozugbo ma ọ bụ na-apụtaghị ìhè na obodo ọzọ, yana na ọ ga-agbaso iwu na ụkpụrụ gọọmentị etiti United States niile metụtara mbupụ. IWU NA-ACHỊ. Nkwekọrịta a ga-achị ma tụgharịa ya n'ụzọ kwekọrọ n'ụkpụrụ iwu nke Commonwealth nke Massachusetts (ewezuga iwu esemokwu). A ga-anụ ihe ọ bụla gbasara iwu gbasara nkwekọrịta a na steeti ma ọ bụ ụlọ ikpe gọọmenti etiti nwere ikike na Suffolk County, Massachusetts, na ndị ahịa na-enyefe ikike na ebe ụlọ ikpe dị otú ahụ.
Akwụkwọ / akụrụngwa
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Ngwaọrụ Analog LT8625SP Silent Switcher nwere ntụaka mkpọtụ dị ala [pdf] Akwụkwọ ntuziaka LT8625SP Silent Switcher nwere ntụaka mkpọtụ dị ala, LT8625SP, onye na-agbachi nkịtị nwere ntụaka mkpọtụ dị ala, onye na-atụgharị ụda mkpọtụ dị ala, ntụaka mkpọtụ dị ala, ntụaka mkpọtụ, ntụaka. |