AWỌN ỌRỌ ANALOG LT8625SP Yipada ipalọlọ pẹlu Itọkasi Ariwo Kekere
Apejuwe
Circuit ifihan 3002A jẹ 18V, 8A mimuuṣiṣẹpọ-isalẹ Silent Switcher® 3 pẹlu ariwo ultralow, ṣiṣe giga ati iwuwo agbara ti n ṣafihan LT®8625SP. Awọn igbewọle voltage ibiti o ti DC3002A ni 2.7V to 18V. Eto igbimọ demo aiyipada jẹ 1V ni 8A ti o pọju lọwọlọwọ lọwọlọwọ DC. LT8625SP jẹ iwapọ, ariwo ultralow, itujade ultralow, ṣiṣe giga ati iyara giga amuṣiṣẹpọ monolithic igbese-isalẹ iyipada eleto. Apapọ apẹrẹ ti a ṣe iyasọtọ ti itọkasi ariwo ultralow ati faaji Silent Switcher iran-kẹta n jẹ ki LT8625SP ṣaṣeyọri iṣẹ ṣiṣe giga mejeeji ati iṣẹ ariwo jakejado jakejado. Kere lori akoko ti 15ns ngbanilaaye VIN giga si iyipada VOUT kekere ni awọn igbohunsafẹfẹ giga.
Igbohunsafẹfẹ iyipada LT8625SP le ṣe eto boya nipasẹ resistor oscillator tabi aago ita lori iwọn 300kHz si 4MHz. Awọn igbohunsafẹfẹ aiyipada ti demo Circuit 3002A ni 2MHz. PIN SYNC ti o wa lori igbimọ demo ti wa ni ipilẹ nipasẹ aiyipada fun iṣẹ ipo foo pulse kekere. Lati muṣiṣẹpọ si aago ita, gbe JP1 si SYNC ki o lo aago ita si ebute SYNC. Ipo Itẹsiwaju Fi agbara mu (FCM) le yan nipa gbigbe shunt JP1. olusin 1 fihan awọn ṣiṣe ti awọn Circuit ni 5V input ati 12V input ni fi agbara mu lemọlemọfún mode isẹ (igbewọle lati VIN ebute). olusin 2 fihan iwọn otutu LT8625SP ti o dide lori igbimọ demo DC3002A labẹ awọn ipo fifuye 6A ati 8A.
Igbimọ demo ti fi àlẹmọ EMI sori ẹrọ. Ajọ EMI yii le wa pẹlu nipa lilo voltage ni VIN_ EMI ebute. Išẹ EMI ti igbimọ naa ni a fihan lori Nọmba 3. Laini pupa ni Radiated EMI Performance jẹ opin CISPR32 Class B. Ni afikun si iṣẹ EMI ti o dara julọ, olutọsọna tun ṣe ẹya ariwo ultralow lori iwọn igbohunsafẹfẹ jakejado, bi o ti han lori Nọmba 4.
Iwe data LT8625SP funni ni apejuwe pipe ti apakan pẹlu iṣẹ ṣiṣe ati alaye ohun elo. Iwe data gbọdọ wa ni kika ni apapo pẹlu itọnisọna demo yii fun demo Circuit 3002A. LT8625SP ti pejọ ni 4mm × 3mm LQFN package pẹlu awọn paadi ti o han ati ti o ku fun resistance igbona kekere. Awọn iṣeduro iṣeto fun iṣẹ EMI kekere ati iṣẹ ṣiṣe igbona ti o pọju wa ni apakan iwe data Low EMI PCB Layout ati Awọn ero Gbona.
Apẹrẹ files fun yi Circuit ọkọ wa o si wa.
Akopọ išẹ
| PARAMETER | AWỌN NIPA | MIN | TYP | MAX | UNITS |
| Iṣagbewọle Voltage Range VIN | 2.7 | 18 | V | ||
| O wujade Voltage | 0.992 | 1.0 | 1.008 | V | |
| Aiyipada Yipada Igbohunsafẹfẹ | 1.93 | 2.0 | 2.07 | MHz | |
| O pọju Ijade Lọwọlọwọ | Derating jẹ pataki fun VIN kan ati Awọn ipo Ooru | 8 | A | ||
| Iṣẹ ṣiṣe | VIN = 12V, fSW = 2MHz, VOUT = 1V ni IOUT = 8A | 75 | % | ||
Akopọ išẹ
olusin 1. LT8625SP Ririnkiri Circuit DC3002A
Iṣiṣẹ ati Ikojọpọ lọwọlọwọ (Igbewọle lati Terminal VIN)
olusin 2. Awọn iwọn otutu nyara vs VIN
olusin 3. LT8625SP Ririnkiri Circuit DC3002A EMI Performance
(Igbewọle 12V si Ijade 1.0V ni 3A, fSW = 2MHz)
Radiated EMI Performance
(CISPR32 Idanwo Ijadejade Radiated pẹlu Awọn idiwọn Kilasi B)
olusin 4. LT8625SP Ririnkiri Circuit DC3002A Ariwo
Iwuwo Spectral (Iwọle 12V si Ijade 1.0V, fSW = 2MHz)
Ariwo Spectral iwuwo
KI Bẹrẹ Ilana
Circuit ifihan 3002A rọrun lati ṣeto lati ṣe iṣiro iṣẹ ṣiṣe ti LT8625SP. Jọwọ tọka si Nọmba 5 fun iṣeto ohun elo to dara ati tẹle awọn ilana idanwo ni isalẹ:
AKIYESI: Nigbati idiwon awọn input tabi o wu voltage ripple, itọju gbọdọ wa ni ya lati yago fun a gun ilẹ asiwaju lori oscilloscope ibere. Wiwọn awọn wu voltage ripple nipa fifọwọkan sample ibere taara kọja kapasito o wu. Fun igbewọle voltage ripple ati awọn latọna o wu voltage ripple, won le tun ti wa ni won nipasẹ awọn SMA asopọ nipasẹ VIN_SENSE ati VO_SENSE. olusin 7 fihan awọn wu voltage ripple ni iwọn ni kapasito ti o wu C20 nipasẹ VO_SENSE SMA asopo.
- Gbe JP1 sori ipo FCM.
- Pẹlu agbara pipa, so ipese agbara titẹ sii si VIN_EMI (E1) ati GND (E2). Ti a ko ba fẹ àlẹmọ EMI igbewọle, so ipese agbara titẹ sii laarin awọn turrets VIN (E17) ati GND (E18).
- Pẹlu agbara pipa, so fifuye lati VOUT (E19) si GND (E20).
- So DMM pọ laarin awọn aaye idanwo igbewọle: VIN_ SENSE (E3) ati SENSE_GND (E4) lati ṣe atẹle vol ti igbewọletage. So DMM pọ laarin VO_SENSE (E10) ati SENSE_GND (E11) lati ṣe atẹle vol o wu jadetage.
- Tan ipese agbara ni titẹ sii. AKIYESI: Rii daju pe titẹ sii voltage ko koja 18V.
- Ṣayẹwo fun awọn to dara o wu voltage (VOUT = 1V)
AKIYESI: Ti ko ba si abajade, ge asopọ fifuye naa fun igba diẹ lati rii daju pe fifuye naa ko ga ju. - Ni kete ti awọn input ki o si wu voltages ti wa ni idasilẹ daradara, ṣatunṣe fifuye lọwọlọwọ laarin iwọn iṣẹ ti 0A si 8A max fun ikanni kan. Kiyesi awọn wu voltage ilana, o wu voltage ripples, iyipada oju ipade igbi, fifuye tionkojalo esi ati awọn miiran sile.
- Aago ita le ṣe afikun si ebute SYNC nigbati iṣẹ SYNC ti lo (JP1 lori ipo SYNC). O yẹ ki a yan olutaja RT (R4) lati ṣeto igbohunsafẹfẹ iyipada LT8625SP o kere ju 20% ni isalẹ igbohunsafẹfẹ SYNC ti o kere julọ.
Aṣoju Iṣe Awọn abuda
olusin 6. LT8625SP Ririnkiri Circuit DC3002A wu Voltage Ripple Ṣewọn nipasẹ J6 (Igbewọle 12V, IOUT = 8A, BW ni kikun)
Ṣe nọmba 7. Iṣẹ iṣe gbona ni VIN = 12V, fSW = 2MHz, VOUT = 1.0V, ILOAD = 8A, TA = 25°C
Ṣe nọmba 8. Awọn idahun Ayipada pẹlu Awọn Igbesẹ Ikojọpọ 0A si 4A si 0A ni dl/dt = 4A/µs
NIPA PIPIN OWO
| Nkan | QTY | Itọkasi | Apejuwe PART | Olupese / PART NOMBA |
| Ti beere Circuit irinše |
| 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 | 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 | FILA., Aṣayan, 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 | OJU IDANWO, KỌRỌRỌ ARẸ, IṢẸ TIN, 2.00mm
× 1.20mm × 1.40mm, VERT, SMT, ẸDÁ |
HARWIN, S2751-46R |
| 16 | 4 | E17-E20 | OKE idanwo, Awo SILVER, Idẹ PHOSPHOR, 3.81mm × 2.03mm, 2.29mm H, SMT | KEYSTONE, 5019 |
| 17 | 1 | FB1 | IND., 60Ω NI 100MHz, PWR, FERITE BEAD, 25%, 5100mA, 15mΩ, 0603 | WURTH ELEKTRONIK, 74279228600 |
| 18 | 2 | J5, J6 | CONN., RF/COAX, SMA JACK, OBIRIN, PORT 1, 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, IDAABOBO, 20%, 4A, 52.5mΩ, 1616AB, IHLP-01 jara | VISHAY, IHLP1616ABER1R0M01 |
| 21 | 0 | L3 | IND., Aṣayan | |
| 22 | 1 | L4 | IND., 0.3µH, PWR, IDAABOBO, 20%, 18.9A, 3.1mΩ, 4.3mm × 4.3mm, XEL4030, AEC-Q200 | COILCRAFT, XEL4030-301MEB |
| 23 | 4 | MP1-MP4 | STANDOFF, NYLON, SANAP-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 | VISHAY, CRCW06031R00FKEA |
| ITEM | QTY | REFERENCE | PART Apejuwe | 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., Aṣayan, 0603 | |
| 29 | 1 | R6 | RES., 10k, 1%1/10W, 0603, AEC-0200 | VISHAYC. RCW060310KOFKEA |
| 30 | 1 | R8 | RES., OQ, 3/4W, 1206, Ẹri PULSE, PWR GIGA, 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 | VISHAYC, RCW06030000ZOEA |
| 33 | 1 | Ul | IC, SYN. Igbesẹ · Downsilent Switcher. LOFN•20 | ẸRỌ Afọwọṣe, LT8625SPJVIRMPBF |
| 34 | 2 | XJP1, XJP2 | CONN.. SHUNT. OBINRIN. 2 POS, 2mm | WURTH ELEKTRONIK, 60800213421 |
DIAGRAM IWADII
ITAN Àtúnse
| OSI | DATE | Apejuwe | NỌMBA OJU |
| A | 5/24 | Itusilẹ akọkọ | — |
ESD Išọra
ESD (itanna itujade) ẹrọ ifura. Awọn ẹrọ ti o gba agbara ati awọn igbimọ iyika le ṣe idasilẹ laisi wiwa. Botilẹjẹpe ọja yi ṣe ẹya itọsi tabi iyika aabo ohun-ini, ibajẹ le waye lori awọn ẹrọ ti o wa labẹ ESD agbara giga. Nitorinaa, awọn iṣọra ESD to tọ yẹ ki o mu lati yago fun ibajẹ iṣẹ tabi isonu ti iṣẹ ṣiṣe.
Ofin ofin ati ipo
Nipa lilo igbimọ igbelewọn ti a jiroro ninu rẹ (paapọ pẹlu awọn irinṣẹ eyikeyi, awọn iwe ohun elo tabi awọn ohun elo atilẹyin, “Igbimọ Iṣiro”), o n gba lati di alaa nipasẹ awọn ofin ati ipo ti a ṣeto si isalẹ (“Adehun”) ayafi ti o ba ti ra Igbimọ Igbelewọn, ninu eyiti ọran Awọn ofin Boṣewa ti Awọn ẹrọ Analog yoo ṣe akoso. Maṣe lo Igbimọ Igbelewọn titi ti o ba ti ka ati gba Adehun naa. Lilo rẹ ti Igbimọ Igbelewọn yoo tọka si gbigba ti Adehun naa. Adehun yii jẹ nipasẹ ati laarin iwọ (“Onibara”) ati Awọn ẹrọ Analog, Inc. ("ADI"), pẹlu awọn oniwe-akọkọ ibi ti owo ni One Technology Way, Norwood, MA 02062, USA. Koko-ọrọ si awọn ofin ati ipo ti Adehun naa, ADI n fun Onibara ni ọfẹ, lopin, ti ara ẹni, igba diẹ, ti kii ṣe iyasọtọ, ti kii ṣe sublicensable, iwe-aṣẹ gbigbe ti kii ṣe gbigbe lati lo Igbimọ Igbelewọn FUN Awọn idi Iṣiro NIKAN. Onibara loye ati gba pe Igbimọ Igbelewọn ti pese fun ẹri nikan ati idi iyasọtọ ti a tọka si loke, ati gba lati ma lo Igbimọ Igbelewọn fun idi miiran. Pẹlupẹlu, iwe-aṣẹ ti a fun ni ni kikun jẹ koko-ọrọ si awọn aropin afikun atẹle wọnyi: Onibara kii yoo (i) yalo, yalo, ṣafihan, ta, gbigbe, fi sọtọ, iwe-aṣẹ, tabi pinpin Igbimọ Igbelewọn; ati (ii) gba ẹnikẹta laaye lati wọle si Igbimọ Igbelewọn. Gẹgẹbi a ti lo ninu rẹ, ọrọ naa "Ẹgbẹ Kẹta" pẹlu eyikeyi nkan miiran yatọ si ADI, Onibara, awọn oṣiṣẹ wọn, awọn alafaramo ati awọn alamọran inu ile. Igbimọ Igbelewọn KO ta si Onibara; gbogbo awọn ẹtọ ti a ko funni ni pato ninu rẹ, pẹlu nini ti Igbimọ Igbelewọn, ni ipamọ nipasẹ ADI. ASIRI. Adehun yii ati Igbimọ Igbelewọn ni ao gba gbogbo rẹ si alaye ikọkọ ati ohun-ini ti ADI. Onibara le ma ṣe afihan tabi gbe eyikeyi apakan ti Igbimọ Igbelewọn si eyikeyi ẹgbẹ miiran fun eyikeyi idi. Lẹhin idaduro lilo Igbimọ Igbelewọn tabi ifopinsi Adehun yii, Onibara gba lati da Igbimọ Igbelewọn pada ni kiakia si ADI. ÀFIKÚN awọn ihamọ. Onibara le ma tuka, ṣajọ tabi yiyipada awọn eerun ẹlẹrọ lori Igbimọ Igbelewọn. Onibara yoo sọfun ADI ti eyikeyi awọn ibajẹ ti o ṣẹlẹ tabi eyikeyi awọn iyipada tabi awọn iyipada ti o ṣe si Igbimọ Igbelewọn, pẹlu ṣugbọn kii ṣe opin si tita tabi eyikeyi iṣẹ miiran ti o kan akoonu ohun elo ti Igbimọ Igbelewọn. Awọn iyipada si Igbimọ Igbelewọn gbọdọ wa ni ibamu pẹlu ofin to wulo, pẹlu ṣugbọn kii ṣe opin si Itọsọna RoHS. TERMINATION. ADI le fopin si Adehun yii nigbakugba lori fifun akiyesi kikọ si Onibara. Onibara gba lati pada si ADI Igbimọ Igbelewọn ni akoko yẹn. OPIN TI layabiliti. Igbimo igbelewọn ti a pese ni ibi ni a pese “BI o ti ri” ATI ADI KO SE ATILẸYIN ỌJA TABI awọn aṣoju fun iru eyikeyi pẹlu ọwọ si. ADI PATAKI PATAKI KANKAN awọn aṣoju, awọn iṣeduro, awọn iṣeduro, tabi awọn iṣeduro, KIAKIA TABI TITUN, ti o jọmọ igbimọ igbelewọn pẹlu, ṣugbọn ko ni opin si, ATILẸYIN ỌJA TI AWỌN ỌLỌWỌ, Idi TABI ailabajẹ ti awọn ẹtọ ohun-ini ọgbọn. LASE iṣẹlẹ ADI ATI awọn oniwe-ašẹ yoo jẹ oniduro fun eyikeyi iṣẹlẹ, PATAKI, airotẹlẹ, tabi Abajade Abajade lati nini onibara TABI LILO TI AWỌN ỌMỌDE IṣẸ, PẸPẸPẸRẸ, PẸRẸ, PẸRẸ LATI OPOLOPO OWO ISE TABI INU IRE. LAPAPO IDI TI ADI LATI OHUNKỌKAN ATI OHUN GBOGBO YOO NI OPIN SI IYE ỌGBỌRUN US dola ($100.00). OJA SIWAJU. Onibara gba pe kii yoo gbejade Igbimọ Igbelewọn taara tabi taara taara si orilẹ-ede miiran, ati pe yoo ni ibamu pẹlu gbogbo awọn ofin ati ilana ijọba apapọ ti Amẹrika ti o jọmọ awọn ọja okeere. ÒFIN Ìṣàkóso. Adehun yii yoo jẹ iṣakoso nipasẹ ati tumọ ni ibamu pẹlu awọn ofin pataki ti Agbaye ti Massachusetts (laisi ija awọn ofin ofin). Eyikeyi igbese ti ofin nipa Adehun yii yoo gbọ ni ipinlẹ tabi awọn kootu ijọba ti o ni aṣẹ ni Suffolk County, Massachusetts, ati Onibara ni bayi fi silẹ si ẹjọ ti ara ẹni ati aaye ti iru awọn ile-ẹjọ.
Awọn iwe aṣẹ / Awọn orisun
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AWỌN ỌRỌ ANALOG LT8625SP Yipada ipalọlọ pẹlu Itọkasi Ariwo Kekere [pdf] Ilana itọnisọna LT8625SP Silent Switcher pẹlu Itọkasi Ariwo Kekere, LT8625SP, Yipada ipalọlọ pẹlu Itọkasi Ariwo Kekere, Yipada pẹlu Itọkasi Ariwo Kekere, Itọkasi Ariwo kekere, Itọkasi Ariwo, Itọkasi |