SC2450

SC2450 SEMTECH | Alldatasheet

Document overview

Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
PDF pages: 20

Technical content

/G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G31 /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G53/G43/G32/G34/G35/G30 /G42/G49/G2D/G50/G68/G61/G73/G65/G2F/G44/G75/G61/G6C/G20/G43/G6F/G6E/G74/G72/G6F/G6C/G6C/G65/G72 /G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G73 /G52/G65/G76/G69/G73/G69/G6F/G6E/G20/G32/G2C/G20/G41/G75/G67/G75/G73/G74/G20/G32/G30/G30/G31 /G54/G79/G70/G69/G63/G61/G6C/G20/G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20/G43/G69/G72/G63/G75/G69/G74 /G44/G65/G73/G63/G72/G69/G70/G74/G69/G6F/G6E /G75/G20/G53/G65/G6C/G65/G63/G74/G61/G62/G6C/G65/G20/G64/G75/G61/G6C/G20/G6F/G75/G74/G70/G75/G74/G20/G6F/G72/G20/G62/G69/G2D/G70/G68/G61/G73/G65/G20/G6F/G70/G65/G72/G61/G74/G69/G6F/G6E /G75/G20/G44/G69/G72/G65/G63/G74/G20/G64/G72/G69/G76/G65/G20/G66/G6F/G72/G20/G4E/G2D/G63/G68/G61/G6E/G6E/G65/G6C/G20/G4D/G4F/G53/G46._/G45/G54/G73 /G75/G20/G55/G6E/G64/G65/G72/G76/G6F/G6C/G74/G61/G67/G65/G20/G6C/G6F/G63/G6B/G6F/G75/G74 /G75/G20/G53/G79/G6E/G63/G68/G72/G6F/G6E/G69/G7A/G61/G74/G69/G6F/G6E/G20/G74/G6F/G20/G65/G78/G74/G65/G72/G6E/G61/G6C/G20/G63/G6C/G6F/G63/G6B /G75/G20/G4D/G75/G6C/G74/G69/G2D/G63/G6F/G6E/G76/G65/G72/G74/G65/G72/G20/G73/G79/G6E/G63/G68/G72/G6F/G6E/G69/G7A/G61/G74/G69/G6F/G6E /G75/G20/G53/G6F/G66/G74/G20/G73/G74/G61/G72/G74 /G75/G20/G46._/G61/G73/G74/G20/G74/G72/G61/G6E/G73/G69/G65/G6E/G74/G20/G72/G65/G73/G70/G6F/G6E/G73/G65 /G75/G20/G4D/G61/G78/G20/G64/G75/G74/G79/G20/G63/G79/G63/G6C/G65/G20/G34/G35/G25 /G75/G20/G4F/G75/G74/G70/G75/G74/G20/G6F/G76/G65/G72/G20/G76/G6F/G6C/G74/G61/G67/G65/G20/G70/G72/G6F/G74/G65/G63/G74/G69/G6F/G6E /G75/G20/G50/G6F/G77/G65/G72/G20/G73/G75/G70/G70/G6C/G69/G65/G73/G20/G66/G6F/G72/G20/G61/G64/G76/G61/G6E/G63/G65/G64/G20/G74/G65/G6C/G65/G63/G6F/G6D/G73/G2F/G64/G61/G74/G61/G63/G6F/G6D/G73 /G75/G20/G53/G4F/G20/G49/G50/G2C/G20/G45/G74/G68/G65/G72/G6E/G65/G74/G20/G61/G6E/G64/G20/G50/G41/G42/G58/G20/G70/G6F/G77/G65/G72/G20/G73/G75/G70/G70/G6C/G69/G65/G73 /G54/G68/G65/G20/G53/G43/G32/G34/G35/G30/G20/G63/G61/G6E/G20/G62/G65/G20/G63/G6F/G6E/G66/G69/G67/G75/G72/G65/G64/G20/G61/G73/G20/G61/G20/G64/G75/G61/G6C/G20/G63/G6F/G6E/G76/G65/G72/G74/G65/G72/G20/G6F/G72/G20/G61 /G62/G69/G2D/G70/G68/G61/G73/G65/G20/G63/G6F/G6E/G76/G65/G72/G74/G65/G72/G20/G66/G6F/G72/G20/G68/G69/G67/G68/G20/G63/G75/G72/G72/G65/G6E/G74/G20/G61/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G73/G2E/G20/G20/G54/G68/G65/G20/G70/G61/G72/G74 /G69/G73/G20/G64/G65/G73/G69/G67/G6E/G65/G64/G20/G66/G6F/G72/G20/G70/G6F/G69/G6E/G74/G20/G6F/G66/G20/G75/G73/G65/G20/G70/G6F/G77/G65/G72/G20/G73/G75/G70/G70/G6C/G69/G65/G73/G20/G77/G69/G74/G68/G20/G31/G30/G2D/G33/G30/G56 /G6E/G6F/G6D/G69/G6E/G61/G6C/G20/G62/G61/G63/G6B/G70/G6C/G61/G6E/G65/G20/G70/G6F/G77/G65/G72/G20/G73/G6F/G75/G72/G63/G65/G73/G2E/G20/G4D/G75/G6C/G74/G69/G70/G6C/G65/G20/G73/G75/G70/G70/G6C/G69/G65/G73/G20/G63/G61/G6E /G62/G65/G20/G73/G79/G6E/G63/G68/G72/G6F/G6E/G69/G7A/G65/G64/G20/G74/G6F/G67/G65/G74/G68/G65/G72/G20/G74/G6F/G20/G70/G72/G65/G76/G65/G6E/G74/G20/G6C/G6F/G77/G20/G66/G72/G65/G71/G75/G65/G6E/G63/G79/G20/G68/G61/G72/G2D /G6D/G6F/G6E/G69/G63/G73/G20/G6F/G6E/G20/G74/G68/G65/G20/G62/G61/G63/G6B/G70/G6C/G61/G6E/G65/G2E/G20/G54/G68/G65/G20/G70/G6F/G77/G65/G72/G20/G64/G69/G73/G73/G69/G70/G61/G74/G69/G6F/G6E/G20/G69/G73/G20/G63/G6F/G6E/G2D /G74/G72/G6F/G6C/G6C/G65/G64/G20/G75/G73/G69/G6E/G67/G20/G61/G20/G6E/G6F/G76/G65/G6C/G20/G6C/G6F/G77/G20/G76/G6F/G6C/G74/G61/G67/G65/G20/G73/G75/G70/G70/G6C/G79/G20/G74/G65/G63/G68/G6E/G69/G71/G75/G65/G2C/G20/G61/G6C/G6C/G6F/G77/G2D /G69/G6E/G67/G20/G68/G69/G67/G68/G20/G73/G70/G65/G65/G64/G20/G61/G6E/G64/G20/G69/G6E/G74/G65/G67/G72/G61/G74/G69/G6F/G6E/G2C/G20/G77/G69/G74/G68/G20/G74/G68/G65/G20/G68/G69/G67/G68/G20/G64/G72/G69/G76/G65/G20/G63/G75/G72/G2D /G72/G65/G6E/G74/G73/G20/G74/G6F/G20/G65/G6E/G73/G75/G72/G65/G20/G6C/G6F/G77/G20/G4D/G4F/G53/G46._/G45/G54/G20/G73/G77/G69/G74/G63/G68/G69/G6E/G67/G20/G6C/G6F/G73/G73/G2E /G54/G68/G65/G20/G75/G73/G65/G20/G6F/G66/G20/G68/G69/G67/G68/G20/G73/G70/G65/G65/G64/G20/G73/G77/G69/G74/G63/G68/G69/G6E/G67/G20/G63/G69/G72/G63/G75/G69/G74/G73/G20/G61/G6C/G6C/G6F/G77/G73/G20/G76/G65/G72/G79/G20/G6E/G61/G72/G2D /G72/G6F/G77/G20/G50/G57/G4D/G20/G6F/G75/G74/G70/G75/G74/G73/G20/G64/G6F/G77/G6E/G20/G74/G6F/G20/G31/G35/G3A/G31/G20/G76/G6F/G6C/G74/G61/G67/G65/G20/G72/G61/G74/G69/G6F/G73/G2E/G20/G20/G53/G69/G6E/G67/G6C/G65 /G70/G69/G6E/G20/G63/G6F/G6D/G70/G65/G6E/G73/G61/G74/G69/G6F/G6E/G20/G66/G6F/G72/G20/G65/G61/G63/G68/G20/G63/G68/G61/G6E/G6E/G65/G6C/G20/G73/G69/G6D/G70/G6C/G69/G66/G69/G65/G73/G20/G64/G65/G76/G65/G6C/G6F/G70/G2D /G6D/G65/G6E/G74/G20/G61/G73/G20/G77/G65/G6C/G6C/G20/G61/G73/G20/G72/G65/G64/G75/G63/G69/G6E/G67/G20/G65/G78/G74/G65/G72/G6E/G61/G6C/G20/G70/G69/G6E/G20/G63/G6F/G75/G6E/G74/G2E /G43/G61/G70/G61/G62/G6C/G65/G20/G6F/G66/G20/G64/G72/G69/G76/G69/G6E/G67/G20/G4D/G4F/G53/G46._/G45/G54/G73/G20/G76/G69/G61/G20/G65/G78/G74/G65/G72/G6E/G61/G6C/G20/G64/G72/G69/G76/G65/G72/G20/G74/G72/G61/G6E/G73/G69/G73/G2D /G74/G6F/G72/G73/G20/G66/G6F/G72/G20/G70/G68/G61/G73/G65/G20/G63/G75/G72/G72/G65/G6E/G74/G73/G20/G62/G65/G79/G6F/G6E/G64/G20/G32/G30/G41/G2E

/G32 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G73 /G41/G62/G73/G6F/G6C/G75/G74/G65/G20/G4D/G61/G78/G69/G6D/G75/G6D/G20/G52/G61/G74/G69/G6E/G67/G73 retemaraP lobmySm umixaMs tinU egatloVylppuSV NI 43V sniPTSBnoegatloVV TSB 24V ycneuqerFrotallicsO )1( 2z HM CCV 8V esaCotnoitcnuJecnatsiseRlamrehT θ CJ 52W /C° tneibmAotnoitcnuJecnatsiseRlamrehT θ AJ 08W /C° egnaRerutarepmeTgnitarepOT A 58+ot04-C ° egnaRerutarepmeTegarotST GTS 051+ot55-C ° sdnoces01)gniredloS(erutarepmeTdaeLT DAEL 003C ° Note: (1) Maximum frequency and maximum supply voltage could cause excessive power dissipation in the part. RETEMARAPS NOITIDNOCN IMP YTX AMS TINU V,egatloVylppuS NI 010 3V tnerruCylppuS0 =ELBANE0 30 4A m tuokcoLegatloVrednU 8.5V siseretsyHOLVU 004V m rotalugeRegatloV egatloVrotalugeRerP 67 V egatloVtuogBC FER Fn7.4=9 9.01 1 0.1V ecnadepmItuogB 3K Ω tnerruCkniSniPVRDGERI VRDGER 5A m pmArorrE egatloVtesffOtupnI 01V m ecnadepmItupnI 5K Ω ecnatcudnocsnarTraeniL 200.V /A rotallicsOlanretnI ycneuqerFR FER K03=1 z HM ycneuqerFR FER K06=0 05z Hk kaePotyellaVpmaRV NI V21=5 .1V kaePotyellaVpmaRV NI V42=3 V Unless specified VIN = 24V, TA = 25/GB0C

/G33 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29 Unless specified VIN = 24V, TA = 25/GB0C RETEMARAPS NOITIDNOCN IMP YTX AMS TINU kcolClanretxE emiTtceteDs n05<emiTesiR2 s µ emiTkcolnU 010 5s µ egnaRycneuqerF 3.01 z HM evirDetaGediShgiH elcyCytuDxaM 54% ecruoSkaePC DAOL Fn01=1 A kniSkaePC DAOL Fn01=1 A evirDetaGediSwoL ecruoSkaePC DAOL Fn01=2 A kniSkaePC DAOL Fn01=2 A gnimiTevirDcnyS palrevo-noNniMC DAOL V1<evirDteFFn1=0 20 5s n hctaMMWPF ,elcyCytuD%05 CSO zHM1=1 -1 % sniPtupnIcigoL tnerruCsaiBtupnIV NI V5-0=0 1-0 1A µ dlohserhTcigoL 8.0V dlohserhTelbasiD2BF V CC V7.0-V noitcetorPtnerruCrevO dlohserhTPCO 3015 117 21V m tnerruCsaiBP/I+COV NI V42=0 07A µ tnerruCsaiBP/I-CO 05A µ noitcetorPegatloVrevO dlohserhTPVO 021% nwodtuhSlamrehT 051C ° Note: (1) This device is ESD sensitive. Use of standard ESD handling precautions is required.

/G34 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G50/G69/G6E/G20/G43/G6F/G6E/G66/G69/G67/G75/G72/G61/G74/G69/G6F/G6E/G4F/G72/G64/G65/G72/G69/G6E/G67/G20/G49/G6E/G66/G6F/G72/G6D/G61/G74/G69/G6F/G6E Note: (1) Only available in tape and reel packaging. A reel con- tains 1000 devices. rebmuNtraP )1( EGAKCAPT BMA T( A) RTWSI0542CS8 2-OSC °58+-04- BVE0542CSd raoBnoitaulavE0542CS Top View (28-Pin SOIC) /G42/G6C/G6F/G63/G6B/G20/G44/G69/G61/G67/G72/G61/G6D

/G35 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 niPe maNniPn oitcnuFniP 11 BF. 1lennahcrofkcabdeeF 21 PMOC. 1lennahcrofnoitasnepmoC 3C N. noitcennocoN 4G B. ecnadepmiecruosK3,sreifilpmarorrerofecnereferV1 52 BF. 2lennahcrofkcabdeeF 62 PMOC. 2lennahcrofnoitasnepmoC 7V RDGER. rotsisnartssaplanretxerofevirdrotalugeR 8E LBANE. elbasidotdnuorgottcennoc,V50.2sidlohserhtelbanE 92 ESAHP. 2lennahcroftupniedonesahP 012 HVRD. 2lennahcedishgihrofevirdetaG 112 HTSB. 2lennahcedishgihroftupnipartstooB 212 LVRD. 2lennahcediswolrofevirdetaG 312 LTSB. 2lennahcediswolrofylppuS 41C CV. ylppusrewopCIdetaluger-erP 511 LTSB. 1lennahcediswolrofylppuS 611 LVRD. 1lennahcediswolrofevirdetaG 711 HTSB. 1lennahcedishgihroftupnipartstooB 811 HVRD. 1lennahcedishgihrofevirdetaG 911 ESAHP. 1lennahcedishgihroftupniedonesahP 02D NGP. dnuorgrewoP 12+ CO. tupnignitrevnirotarapmoctnerrucrevO 222 -CO. 2lennahcroftupnignitrevni-nonrotarapmoctnerrucrevO 321 -CO. 1lennahcroftupnignitrevni-nonrotarapmoctnerrucrevO 42K LCTXE .tneserpsilangisdilavanehwtupnisihtotskcolretrevnoc,kcolclanretxE 52T UOKLC .sretrevnocrehtoroflangisgnizinorhcnysedivorpotevirdlevelcigol,tuokcolC 62C N. noitcennocoN 72D NGA. dnuorggolanA 82F ERR .rotarenegpmardnarotallicsolanretnirofrotsiserecnereferlanretxE /G50/G69/G6E/G20/G44/G65/G73/G63/G72/G69/G70/G74/G69/G6F/G6E/G73

/G36 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G54/G79/G70/G69/G63/G61/G6C/G20/G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E /G53/G63/G68/G65/G6D/G61/G74/G69/G63/G20/G66/G6F/G72/G20/G54/G77/G6F/G20/G43/G68/G61/G6E/G6E/G65/G6C/G20/G4F/G70/G65/G72/G61/G74/G69/G6F/G6E

/G37 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G42/G69/G6C/G6C/G20/G6F/G66/G20/G4D/G61/G74/G65/G72/G69/G61/G6C/G20/G66/G6F/G72/G20/G54/G77/G6F/G20/G43/G68/G61/G6E/G6E/G65/G6C/G20/G4F/G70/G65/G72/G61/G74/G69/G6F/G6E /G54/G79/G70/G69/G63/G61/G6C/G20/G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 metIy tQe cnerefeRe ulaV/rebmuNtraPr erutcafunaM 18 8 C-1C. reC,V05,Fµ74.0y nA 23 5 2C,42C,9C6 021,.reC,Fµ33.0y nA 32 1 1C,01C6 021,.reC,Fn22y nA 41 2 1C6 021,.reC,Fµ1.0y nA 52 4 1C,31C6 021,.reC,Fn01y nA 61 5 1C6 021,.reC,Fp74y nA 76 3 2C,22C,12C,02C,91C,61C. tnaT,V53,Fµ22y nA 82 8 1C,71C. mulA,V53,Fµ086y nA 92 7 2C,62C6 021,.reC,Fn2.2y nA 013 0 5C,92C,82C6 021,.reC,Fn0.1y nA 111 0 3C6 021,.reC,Fµ0.1y nA 211 15 4C,44C,34C,24C,14C,04C,73C,63C,33C,23C,13C6 021,.reC,Fµ01y nA 314 9 3C,83C,53C,43C .mulA,V3.6,Fµ0051y nA 414 6 D,5D,2D,1D ,FLEM,ykttohcS,V04,A1 M9185N1 ynA

5124 D,3D 040QB03,ykttohcS,V04,A3y nA

612 2 L,1Ls nrut9,rotcudnI: scitengaM uMlooK 7A-60277:N/P 714 4 M,3M,2M,1M -OT,TEFSOMlennahC-N BA362 dlihcriaF LB0307BDF:N/P 811 1 Q .rwP.deM,NPN,A1,V08 322-TOS TC65PCB 9123 R,1R6 021,%5,2.2y nA 0226 R,4R6 021,%5,7.4y nA 124 1 1R,7R,5R,2R6 021,%5,0.1y nA 221 8 R6 021,%5,k65y nA 322 0 1R,9R6 021,%5,k2.2y nA 421 2 1R, rotsiserpihC 2152,%1,W1,500.0 ynA

/G38 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G54/G79/G70/G69/G63/G61/G6C/G20/G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 /G42/G69/G6C/G6C/G20/G6F/G66/G20/G4D/G61/G74/G65/G72/G69/G61/G6C/G20/G66/G6F/G72/G20/G54/G77/G6F/G20/G43/G68/G61/G6E/G6E/G65/G6C/G20/G4F/G70/G65/G72/G61/G74/G69/G6F/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 metIy tQe cnerefeRe ulaV/rebmuNtraPr erutcafunaM 524 6 1R,51R,41R,31R 0121,%5,W4/1,2.2y nA 621 * 13R,91R,*71R 6021,0,rotsiserpihCy nA 722 1 2R,02R6 021,%1,k00.1y nA 821 2 2R6 021,%1,k23.2y nA 921 3 2R6 021,%1,k20.4y nA 032 7 2R,62R6 021,%5,02y nA 131 8 2R6 021,%5,01y nA 231 9 2R6 021,%5,15y nA 331 4 3R6 021,%5,k51y nA 431 6 3R6 021,%1,k1.86y nA 531 7 3R6 021,%1,k0.01y nA 630 * 2coR,*1coR6 021,%1,DBTy nA 731 0 542CS ,rellortnoClauD/esahP-iB W82-OS .proChcetmeS WSI0542CS:N/P 1112-894-508 /G4E/G6F/G74/G65/G73/G3A /G31/G2E/G20/G2A/G20/G49/G6E/G64/G69/G63/G61/G74/G65/G73/G20/G6F/G70/G74/G69/G6F/G6E/G61/G6C/G20/G70/G61/G72/G74/G73/G2E /G32/G2E/G20/G53/G6F/G6D/G65/G20/G70/G61/G72/G74/G73/G20/G61/G72/G65/G20/G73/G65/G6C/G65/G63/G74/G65/G64/G20/G64/G75/G65/G20/G74/G6F/G20/G61/G76/G61/G69/G6C/G61/G62/G69/G6C/G69/G74/G79/G20/G6F/G72/G20/G6C/G65/G61/G64/G20/G74/G69/G6D/G65/G2C/G20/G61/G6E/G64/G20/G61/G72/G65/G20/G6E/G6F/G74/G20/G6F/G70/G74/G69/G6D/G69/G7A/G65/G64/G2E

/G39 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G54/G79/G70/G69/G63/G61/G6C/G20/G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 /G53/G63/G68/G65/G6D/G61/G74/G69/G63/G20/G66/G6F/G72/G20/G42/G69/G2D/G50/G68/G61/G73/G65/G20/G4F/G70/G65/G72/G61/G74/G69/G6F/G6E

/G31/G30 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G20/G43/G75/G72/G76/G65/G73 /G50/G68/G61/G73/G65/G20 /G4E/G6F/G64/G65/G20 /G57/G61/G76/G65/G66/G6F/G72/G6D/G20 /G6F/G66/G20 /G54/G77/G6F/G2D/G43/G68/G61/G6E/G6E/G65/G6C/G20 /G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20 /G43/G69/G72/G63/G75/G69/G74/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G31/G32/G41/G20 /G66/G6F/G72 /G35/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G31/G38/G41/G20 /G66/G6F/G72/G20 /G33/G2E/G33/G56/G29 Overall System Efficiency vs. Overall Load (W) of the 5V and 3.3V channels 60.00% 65.00% 70.00% 75.00% 80.00% 85.00% 90.00% 95.00% 0 20 40 60 80 100 120 Output Power (W) Efficiency Efficiency /G63/G68/G31/G3A/G20/G56/G70/G68/G61/G73/G65/G35/G56/G3B/G20/G63/G68/G32/G3A/G20/G56/G70/G68/G61/G73/G65/G33/G2E/G33/G56 /G45/G66/G66/G69/G63/G69/G65/G6E/G63/G79/G20 /G69/G6E/G20 /G54/G77/G6F/G2D/G43/G68/G61/G6E/G6E/G65/G6C/G20 /G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20 /G43/G69/G72/G63/G75/G69/G74/G20 /G28/G35/G56/G2F/G31/G32/G41/G2C/G20 /G33/G2E/G33/G56/G2F/G31/G38/G41/G29 /G54/G77/G6F/G20 /G43/G68/G61/G6E/G6E/G65/G6C/G20 /G4F/G70/G65/G72/G61/G74/G69/G6F/G6E

/G31/G31 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G20/G43/G75/G72/G76/G65/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29 /G33/G2E/G33/G56/G20 /G43/G68/G61/G6E/G6E/G65/G6C/G20 /G47/G61/G74/G65/G20 /G57/G61/G76/G65/G66/G6F/G72/G6D/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G31/G38/G41/G29 /G63/G68/G31/G3A/G20/G56/G67/G61/G74/G65/G48/G3B/G20/G63/G68/G32/G3A/G20/G56/G67/G61/G74/G65/G4C /G35/G2E/G30/G56/G20 /G43/G68/G61/G6E/G6E/G65/G6C/G20 /G47/G61/G74/G65/G20 /G57/G61/G76/G65/G66/G6F/G72/G6D/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G31/G32/G41/G29 /G63/G68/G31/G3A/G20/G56/G67/G61/G74/G65/G48/G3B/G20/G63/G68/G32/G3A/G20/G56/G67/G61/G74/G65/G4C

/G31/G32 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G20/G43/G75/G72/G76/G65/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29 /G53/G74/G61/G72/G74/G2D/G75/G70/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G56/G6F/G75/G74/G31/G20 /G3D/G20 /G35/G2E/G30/G56/G2F/G31/G32/G41/G2C/G20 /G56/G6F/G75/G74/G32/G20 /G3D/G20 /G33/G2E/G33/G56/G20 /G2F/G31/G38/G41/G29 /G63/G68/G31/G3A/G20/G56/G6F/G75/G74/G35/G2E/G30/G56/G3B/G20/G63/G68/G32/G3A/G20/G56/G6F/G75/G74/G33/G2E/G33/G56 /G42/G69/G2D/G50/G68/G61/G73/G65/G20 /G4F/G70/G65/G72/G61/G74/G69/G6F/G6E/G20 /G28/G56/G6F/G75/G74/G20 /G3D/G20 /G33/G2E/G33/G56/G2C/G20 /G4D/G61/G78/G2E/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G32/G30/G41/G29 Overall System Efficiency vs. iLoad 60.00% 65.00% 70.00% 75.00% 80.00% 85.00% 90.00% 0 5 10 15 20 Load Current (A) Efficiency Overall Efficiency /G45/G66/G66/G69/G63/G69/G65/G6E/G63/G79/G20 /G69/G6E/G20 /G42/G69/G2D/G50/G68/G61/G73/G65/G20 /G41/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20 /G43/G69/G72/G63/G75/G69/G74/G20 /G28/G33/G2E/G33/G56/G2F/G32/G30/G41/G29

/G31/G33 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G20/G43/G75/G72/G76/G65/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29 /G50/G68/G61/G73/G65/G20 /G4E/G6F/G64/G65/G20 /G57/G61/G76/G65/G66/G6F/G72/G6D/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G56/G6F/G75/G74/G20 /G3D/G20 /G33/G2E/G33/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G32/G30/G41/G29 /G63/G68/G31/G3A/G20/G56/G70/G68/G61/G73/G65/G31/G3B/G20/G63/G68/G32/G3A/G20/G56/G70/G68/G61/G73/G65/G32 /G47/G61/G74/G65/G20 /G57/G61/G76/G65/G66/G6F/G72/G6D/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G56/G6F/G75/G74/G20 /G3D/G20 /G33/G2E/G33/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G31/G30/G41/G2F/G70/G68/G61/G73/G65/G29 /G63/G68/G31/G3A/G20/G56/G67/G61/G74/G65/G4C/G3B/G20/G63/G68/G32/G3A/G20/G56/G67/G61/G74/G65/G48

/G31/G34 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G45/G6C/G65/G63/G74/G72/G69/G63/G61/G6C/G20/G43/G68/G61/G72/G61/G63/G74/G65/G72/G69/G73/G74/G69/G63/G20/G43/G75/G72/G76/G65/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29 /G53/G74/G61/G72/G74/G2D/G75/G70/G20 /G28/G56/G69/G6E/G20 /G3D/G20 /G32/G34/G56/G2C/G20 /G56/G6F/G75/G74/G20 /G3D/G20 /G33/G2E/G33/G56/G2C/G20 /G4C/G6F/G61/G64/G20 /G43/G75/G72/G72/G65/G6E/G74/G20 /G3D/G20 /G35/G41/G2F/G70/G68/G61/G73/G65/G29 /G63/G68/G31/G3A/G20/G56/G6F/G75/G74 /G54/G68/G65/G6F/G72/G79/G20/G6F/G66/G20/G4F/G70/G65/G72/G61/G74/G69/G6F/G6E The SC2450 employs a voltage mode control with feed forward to provide fast output response to load and line transients. The SC2450 has two outputs, which can be used to generate two separate supply voltages or can be combined in bi-phase operation to generate one single supply voltage. The internal reference is trimmed to 1 V with +/-1% accuracy, and the out- puts voltages can be adjusted by two external resistors. In bi- phase operation, the dual switching regulators are operated 180° out of phase. Load current sharing between phases is normally required, and this can be achieved by using precise feedback voltage divider resistors (typically 0.1%) to match individual phase output voltage. In addition, small drooping re- sistors ( could be PCB traces) are employed at the output of each phase to enhance phase current balance. PWM Control Changes on the output voltages are fed to the inverting input of the Error Amplifiers, by the FB1 and FB2 pins, and compared with the internal 1 V reference. The compensation to the transconductance amplifier is achieved by connecting a ca- pacitor in series with a resistor from the COMP1 and COMP2 pins to AGND respectively. The error signal from the error am- plifier is compared to the saw tooth waveform by the PWM comparator, and matched timing signal is generated to control the upper and lower gate drives of the two phases. A single Ramp signal is used to generate the control signals for both of phases, hence the maximum duty cycle is less than 50%. Oscillator Frequency Selection The sawtooth signal is generated by charging an internal ca- pacitor with a current source. The charge current is set by an external resistor connected from the RREF pin to AGND. The oscillator frequency and the external resistance follow an in- versely proportional relationship. Feed Forward The SC2450 incorporates a voltage feed forward scheme to improve line transient immunity when changes of the input volt- age occur. As the input voltage changes, the ramp valley to peak voltage of the internal oscillator follows this change in- stantly. As a result the output voltage will have minimum dis- turbance due to the input line change. Synchronized Operation The internal oscillator can be synchronized to an external clock operating in the range of 300 kHz to 1 MHz. The switching frequency of each channel is one half of the oscillator frequency. The oscillator clock is also available externally through the CLKOUT pin and can be used to provide synchronization for other converters.

/G31/G35 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 Bias Generation A 6-7 Volt supply voltage is required to power up the SC2450. This voltage could be provided by an external power supply or derived from VIN through an external pass transistor. REGDRV is the control signal to the base of the pass transistor that will regulate VCC. The voltage at the VCC pin is compared to the internal voltage reference, and the REGDRV pin can sink up to 5 mA current to regulate the voltage at the VCC pin. Enable If the ENABLE pin is connected to logic high, the SC2450 is enabled, while connecting it to ground will put the device into disabled mode. The ENABLE pin can also be configured as input UVLO through input voltage divider resistors. The control- ler will be enabled when the ENABLE pin voltage reaches 2.05 V, and will be disabled with 400 mV hysteresis. Under Voltage Lockout Under Voltage lockout (UVLO) circuitry senses VCC through a voltage divider. If this signal falls below 5.8 V, with a typical hysteresis of 400 mV, the BG pin is pulled low by an internal transistor causing the lower MOSFET gate to be on and the upper MOSFET gate off for both phases. Over Voltage Protection The SC2450 provides OVP protection for each output individu- ally. Once the converter output voltage exceeds 120% nominal output voltage, the lower MOSFET gates are latched on and the upper MOSFET gates are latched off. The latch is then reset once the OVP condition is removed. Soft Start An external capacitor at the BG pin is used to set up the Soft Start duration. The capacitor value, in conjunction with the internal 3K resistor at the BG pin, control the duration to bring up the bandgap to its final level. As the BG capacitor is being charged through the internal resistor, the PWM pulse opens accordingly until the bandgap is charged completely. This controlled start up of the PWM prevents output voltage over- shoot, unnecessary component stress, and noise generation during start up. /G54/G68/G65/G6F/G72/G79/G20/G6F/G66/G20/G4F/G70/G65/G72/G61/G74/G69/G6F/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 Over Current Protection The SC2450 current limit provides protection during an over current condition. A sense resistor or PCB trace can be used to sense the input supply current. The over current protection trip point is determined by the volt- age drop across the sense resistor. Once this voltage drop exceeds 115 mV, OCP protection circuit will be triggered. Due to component and layout parasitics, filtering might be neces- sary across the OC+ and OC- pins. It is recommended to use 20 Ohm resistor and 10 nF capacitor for filtering. The OCP accuracy may be affected by non-ideal PCB layout and MOSFET variations. To accommodate these variations, the OCP threshold can be externally adjusted by a voltage divider across the sense resistor to attenuate the voltage drop across the sense resistor, so that increase the OCP threshold accord- ingly. See application circuits. Once an over current condition occurs, the lower MOSFET gates are latched on and the upper MOSFET gates are latched off. The latch is then reset at the beginning of the next clock cycle. The cycle is repeated indefinitely until the over current condition removed. Thermal Shutdown In addition to current limit, the SC2450 monitors over tempera- ture condition. The over temperature detect will shut down the part if the SC2450 die temperature exceeds 150°C, and will auto reset once the die temperature is dropped down. Gate Drive The SC2450 integrates high current gate drivers for fast switch- ing of large MOSFETs. The high-side gates can be switched with peak currents of 1 Amp, while the larger low-side gates can be switched with peak currents of 2 Amps. A cross con- duction prevention circuitry ensures a non-overlapping opera- tion between the Upper and Lower MOSFETs. This prevents false current limit tripping and provides high efficiency.

/G31/G36 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 The control model of SC2450 can be depicted in Fig. 1. This model can also be used in Spice kind of simulator to generate loop gain Bode plots. The bandgap reference is 1 V and trimmed to +/-1% accuracy. The desired output voltage can be achieved by setting the resistive divider network, R1 and R2. The error amplifier is transconductance type with fixed gain of: /G20 Vbg C R Vin Co Rc Ro L R2 R1 Error-Amp 0 0 0 0 Gpwm Verror Duty V A 0.002 ⋅ The task here is to properly choose the compensation network for a nicely shaped loop-gain Bode plot. The following design procedures are recommended to accomplish the goal: (1) Calculate the corner frequency of the output filter: (2) Calculate the ESR zero frequency of the output filter ca- pacitor: (3) Check that the ESR zero frequency is not too high. If this condition is not met, the compensation structure may not provide loop stability. The solution is to add some electro- lytic capacitors to the output capacitor bank to correct the output filter corner frequency and the ESR zero frequency. In some cases, the filter inductance may also need to be ad- justed to shift the filter corner frequency. It is not recommended to use only high frequency multi-layer ceramic capacitors for output filter. G pwm V ramp Ts() T o 1s R. C. sR. C. 1s R c. C o. 1s R c C o. L R o . s2 L. C o. 1 R c R o /G52/G20/G31/G20/G52/G20/G32/G20 ./G20./G20./G20 /G31/G20 /G32/G20π /G20./G20/G52/G20/G63/G20./G20/G43/G20/G6F/G20./G20 /G20 /G35/G20 < /G20 /G20/G46._/G20/G6F/G20 /G31/G20 /G32/G20π /G20./G20/G4C/G20/G43/G20/G6F/G20./G20./G20 R 1 G pwm V in. G error. F esr F o F x_over F esr V o V bg /G20 /G46._/G20/G78/G5F/G6F/G76/G65/G72/G20 /G35/G20 /G20/G46._/G20/G6F/G20/G46._/G20/G65/G73/G72/G20< /G20 /G46._/G20/G78/G5F/G6F/G76/G65/G72/G20< /G20 /G43/G6F/G6E/G74/G72/G6F/G6C/G20/G4C/G6F/G6F/G70/G20/G44/G65/G73/G69/G67/G6E Fig. 1. SC2450 control model. The compensation network includes a resistor and a capacitor in series, which terminates from the output of the error ampli- fier to the ground. This device uses voltage mode control with input voltage feed forward. The peak-to-peak ramp voltage is proportional to the input voltage, which results in an excellent performance to re- ject input voltage variation. The PWM gain is inversion of the ramp amplitude, and this gain is given by: where the ramp amplitude (peak-to-peak) is 3 volts when input voltage is 24 volts. The total control loop-gain can then be derived as follows: where (4) Choose the loop gain cross over frequency (0 dB frequency). It is recommended that the crossover frequency is always less than one fifth of the switching frequency or the output ripple frequency in bi-phase mode operation: If the transient specification is not stringent, it is better to choose a crossover frequency that is less than one tenth of the switch- ing frequency for good noise immunity. The resistor in the compensation network can then be calculated as: when:

/G31/G37 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G43/G6F/G6E/G74/G72/G6F/G6C/G20/G4C/G6F/G6F/G70/G20/G44/G65/G73/G69/G67/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 Step 1. Output filter corner frequency Fo = 1.453 KHz Step 2. ESR zero frequency: Fesr = 2.653 KHz Step 3. Check the following condition: Which is satisfied in this case. Step 4. Choose crossover frequency and calculate compen- sator R: Fx_over = 30 KHz R = 2.95 KΩ Step 5. Calculate the compensator C: C = 186 nF Step 6. Generate Bode plot and check the phase margin. In this case, the phase margin is about 85°C that ensures the loop stability. Fig. 2 shows the bode plot of the loop. or when (5) The compensation capacitor is determined by choosing the compensator zero to be about one fifth of the output filter cor- ner frequency: (6) The final step is to generate the Bode plot, either by using the simulation model in Fig. 1 or using the equations provided here with Mathcad. The phase margin can then be checked using the Bode plot. Usually, this design procedure ensures a healthy phase margin. An example is given below to demonstrate the procedure intro- duced above. The parameters of the power supply are given as: R 1 G pwm V in. G error. F o F esr F x_over F o V o V bg F zero F o C 1 2 π. R. F zero. F esr F o< F x_over< F ers F sw V in := 24 V V o := 2.5 V I o := 20 A F sw := 150 KHz L := 4 µH C o := 3000 µF R c := 0.02 Ω R 1 := 1.5 KΩ R 2 := 1.0 KΩ

/G31/G38 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G47/G6F/G6F/G64/G20/G20/G6C/G61/G79/G6F/G75/G74/G20/G20/G69/G73/G20/G6E/G65/G63/G65/G73/G73/G61/G72/G79/G20/G66/G6F/G72/G20/G73/G75/G63/G63/G65/G73/G73/G66/G75/G6C/G20/G69/G6D/G70/G6C/G65/G6D/G65/G6E/G74/G61/G74/G69/G6F/G6E /G6F/G66/G20/G74/G68/G65/G20/G53/G43/G32/G34/G35/G30/G20/G62/G69/G2D/G70/G68/G61/G73/G65/G2F/G64/G75/G61/G6C/G20/G63/G6F/G6E/G74/G72/G6F/G6C/G6C/G65/G72/G2E/G20/G49/G6D/G70/G6F/G72/G74/G61/G6E/G74/G20/G6C/G61/G79/G6F/G75/G74 /G67/G75/G69/G64/G65/G6C/G69/G6E/G65/G73/G20/G61/G72/G65/G20/G6C/G69/G73/G74/G65/G64/G20/G62/G65/G6C/G6F/G77/G2E /G31/G29/G2E/G20/G54/G68/G65/G20/G68/G69/G67/G68/G20/G70/G6F/G77/G65/G72/G20/G70/G61/G72/G74/G73/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65/G20/G6C/G61/G69/G64/G20/G6F/G75/G74/G20/G66/G69/G72/G73/G74/G2E/G20/G54/G68/G65/G20/G70/G61/G72/G61/G2D /G73/G69/G74/G69/G63/G20/G69/G6E/G64/G75/G63/G74/G61/G6E/G63/G65/G20/G6F/G66/G20/G74/G68/G65/G20/G70/G75/G6C/G73/G61/G74/G69/G6E/G67/G20/G70/G6F/G77/G65/G72/G20/G63/G75/G72/G72/G65/G6E/G74/G20/G6C/G6F/G6F/G70/G20/G28/G73/G74/G61/G72/G74 /G66/G72/G6F/G6D/G20/G70/G6F/G73/G69/G74/G69/G76/G65/G20/G65/G6E/G64/G20/G6F/G66/G20/G74/G68/G65/G20/G69/G6E/G70/G75/G74/G20/G63/G61/G70/G61/G63/G69/G74/G6F/G72/G2C/G20/G74/G6F/G20/G74/G6F/G70/G20/G4D/G4F/G53/G46._/G45/G54/G2C /G74/G68/G65/G6E/G20/G74/G6F/G20/G62/G6F/G74/G74/G6F/G6D/G20/G4D/G4F/G53/G46._/G45/G54/G20/G62/G61/G63/G6B/G20/G74/G6F/G20/G70/G6F/G77/G65/G72/G20/G67/G72/G6F/G75/G6E/G64/G29/G20/G6D/G75/G73/G74/G20/G62/G65 /G6D/G69/G6E/G69/G6D/G69/G7A/G65/G64/G2E/G20/G20/G54/G68/G65/G20/G68/G69/G67/G68/G20/G66/G72/G65/G71/G75/G65/G6E/G63/G79/G20/G69/G6E/G70/G75/G74/G20/G63/G61/G70/G61/G63/G69/G74/G6F/G72/G73/G20/G61/G6E/G64/G20/G74/G6F/G70 /G4D/G4F/G53/G46._/G45/G54/G73/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65/G20/G63/G6C/G6F/G73/G65/G20/G74/G6F/G20/G65/G61/G63/G68/G20/G6F/G74/G68/G65/G72/G2E/G20/G54/G68/G65/G20/G66/G72/G65/G65/G77/G68/G65/G65/G6C/G2D /G69/G6E/G67/G20/G53/G63/G68/G6F/G74/G74/G6B/G79/G20/G64/G69/G6F/G64/G65/G2C/G20/G74/G68/G65/G20/G62/G6F/G74/G74/G6F/G6D/G20/G4D/G4F/G53/G46._/G45/G54/G20/G73/G6E/G75/G62/G62/G65/G72/G2C/G20/G61/G6E/G64 /G74/G68/G65/G20/G62/G6F/G74/G74/G6F/G6D/G20/G4D/G4F/G53/G46._/G45/G54/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65/G20/G70/G6C/G61/G63/G65/G64/G20/G63/G6C/G6F/G73/G65/G20/G74/G6F/G20/G65/G61/G63/G68/G20/G6F/G74/G68/G65/G72/G2E /G54/G68/G65/G20/G4D/G4F/G53/G46._/G45/G54/G20/G67/G61/G74/G65/G20/G64/G72/G69/G76/G65/G20/G61/G6E/G64/G20/G63/G75/G72/G72/G65/G6E/G74/G20/G73/G65/G6E/G73/G65/G20/G6C/G6F/G6F/G70/G20/G61/G72/G65/G61/G73 /G73/G68/G6F/G75/G6C/G64/G20/G62/G65/G20/G6D/G69/G6E/G69/G6D/G69/G7A/G65/G64/G2E/G20/G20/G54/G68/G65/G20/G67/G61/G74/G65/G20/G64/G72/G69/G76/G65/G20/G74/G72/G61/G63/G65/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65 /G73/G68/G6F/G72/G74/G20/G61/G6E/G64/G20/G77/G69/G64/G65/G2E /G32/G29/G2E/G20/G54/G68/G65/G20/G6C/G61/G79/G6F/G75/G74/G20/G6F/G66/G20/G74/G68/G65/G20/G74/G77/G6F/G20/G70/G68/G61/G73/G65/G73/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65/G20/G6D/G61/G64/G65/G20/G61/G73/G20/G73/G79/G6D/G2D /G6D/G65/G74/G72/G69/G63/G61/G6C/G20/G61/G73/G20/G70/G6F/G73/G73/G69/G62/G6C/G65/G2E/G20/G54/G68/G65/G20/G53/G43/G32/G34/G35/G30/G20/G63/G6F/G6E/G74/G72/G6F/G6C/G6C/G65/G72/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65 /G70/G6C/G61/G63/G65/G64/G20/G69/G6E/G20/G74/G68/G65/G20/G63/G65/G6E/G74/G65/G72/G20/G6F/G66/G20/G74/G68/G65/G20/G74/G77/G6F/G20/G70/G68/G61/G73/G65/G73/G2E/G20/G20/G50/G6C/G65/G61/G73/G65/G20/G73/G65/G65/G20/G65/G76/G61/G6C/G75/G2D /G61/G74/G69/G6F/G6E/G20/G62/G6F/G61/G72/G64/G20/G6C/G61/G79/G6F/G75/G74/G20/G61/G73/G20/G61/G6E/G20/G65/G78/G61/G6D/G70/G6C/G65/G2E /G33/G29/G2E/G20/G53/G65/G70/G61/G72/G61/G74/G65/G20/G67/G72/G6F/G75/G6E/G64/G20/G70/G6C/G61/G6E/G65/G73/G20/G66/G6F/G72/G20/G61/G6E/G61/G6C/G6F/G67/G20/G61/G6E/G64/G20/G70/G6F/G77/G65/G72/G20/G73/G68/G6F/G75/G6C/G64 /G62/G65/G20/G70/G72/G6F/G76/G69/G64/G65/G64/G2E/G20/G50/G6F/G77/G65/G72/G20/G63/G75/G72/G72/G65/G6E/G74/G20/G73/G68/G6F/G75/G6C/G64/G20/G61/G76/G6F/G69/G64/G20/G72/G75/G6E/G6E/G69/G6E/G67/G20/G6F/G76/G65/G72/G20/G74/G68/G65 /G61/G6E/G61/G6C/G6F/G67/G20/G67/G72/G6F/G75/G6E/G64/G20/G70/G6C/G61/G6E/G65/G2E/G20/G54/G68/G65/G20/G41/G47/G4E/G44/G20/G69/G73/G20/G73/G74/G61/G72/G20/G63/G6F/G6E/G6E/G65/G63/G74/G65/G64/G20/G74/G6F/G20/G74/G68/G65 /G50/G47/G4E/G44/G20/G61/G74/G20/G74/G68/G65/G20/G63/G6F/G6E/G76/G65/G72/G74/G65/G72/G20/G6F/G75/G74/G70/G75/G74/G20/G74/G6F/G20/G70/G72/G6F/G76/G69/G64/G65/G20/G62/G65/G73/G74/G20/G70/G6F/G73/G73/G69/G62/G6C/G65 /G67/G72/G6F/G75/G6E/G64/G20/G73/G65/G6E/G73/G65/G2E/G20/G52/G65/G66/G65/G72/G20/G74/G6F/G20/G74/G68/G65/G20/G61/G70/G70/G6C/G69/G63/G61/G74/G69/G6F/G6E/G20/G73/G63/G68/G65/G6D/G61/G74/G69/G63/G73/G2C/G20/G63/G65/G72/G2D /G74/G61/G69/G6E/G20/G63/G6F/G6D/G70/G6F/G6E/G65/G6E/G74/G73/G20/G73/G68/G6F/G75/G6C/G64/G20/G62/G65/G20/G63/G6F/G6E/G6E/G65/G63/G74/G65/G64/G20/G64/G69/G72/G65/G63/G74/G6C/G79/G20/G74/G6F/G20/G74/G68/G65/G20/G41/G47/G4E/G44/G2E /G34/G29/G2E/G20/G49/G66/G20/G61/G20/G6D/G75/G6C/G74/G69/G2D/G6C/G61/G79/G65/G72/G20/G50/G43/G42/G20/G69/G73/G20/G75/G73/G65/G64/G2C/G20/G70/G6F/G77/G65/G72/G20/G6C/G61/G79/G65/G72/G20/G61/G6E/G64/G20/G67/G72/G6F/G75/G6E/G64 /G6C/G61/G79/G65/G72/G20/G61/G72/G65/G20/G72/G65/G63/G6F/G6D/G6D/G65/G6E/G64/G65/G64/G20/G74/G6F/G20/G62/G65/G20/G61/G64/G6A/G61/G63/G65/G6E/G74/G20/G74/G6F/G20/G65/G61/G63/G68/G20/G6F/G74/G68/G65/G72/G2E /G54/G79/G70/G69/G63/G61/G6C/G6C/G79/G20/G74/G68/G65/G20/G70/G6F/G77/G65/G72/G20/G6C/G61/G79/G65/G72/G20/G69/G73/G20/G6F/G6E/G20/G74/G68/G65/G20/G74/G6F/G70/G2C/G20/G66/G6F/G6C/G6C/G6F/G77/G65/G64/G20/G62/G79/G20/G74/G68/G65 /G67/G72/G6F/G75/G6E/G64/G20/G6C/G61/G79/G65/G72/G2E/G20/G54/G68/G69/G73/G20/G72/G65/G73/G75/G6C/G74/G73/G20/G69/G6E/G20/G74/G68/G65/G20/G6C/G65/G61/G73/G74/G20/G70/G61/G72/G61/G73/G69/G74/G69/G63/G20/G69/G6E/G64/G75/G63/G74/G61/G6E/G63/G65 /G69/G6E/G20/G74/G68/G65/G20/G4D/G4F/G53/G46._/G45/G54/G2D/G63/G61/G70/G61/G63/G69/G74/G6F/G72/G20/G70/G6F/G77/G65/G72/G20/G6C/G6F/G6F/G70/G2C/G20/G61/G6E/G64/G20/G72/G65/G64/G75/G63/G65/G73/G20/G74/G68/G65 /G72/G69/G6E/G67/G69/G6E/G67/G20/G6F/G6E/G20/G74/G68/G65/G20/G70/G68/G61/G73/G65/G20/G6E/G6F/G64/G65/G2E/G20/G54/G68/G65/G20/G72/G65/G73/G74/G20/G6F/G66/G20/G74/G68/G65/G20/G6C/G61/G79/G65/G72/G73/G20/G63/G6F/G75/G6C/G64 /G62/G65/G20/G75/G73/G65/G64/G20/G74/G6F/G20/G72/G75/G6E/G20/G44/G43/G20/G73/G75/G70/G70/G6C/G79/G20/G74/G72/G61/G63/G65/G73/G20/G61/G6E/G64/G20/G73/G69/G67/G6E/G61/G6C/G20/G74/G72/G61/G63/G65/G73/G2E /G41/G6E/G20/G65/G78/G61/G6D/G70/G6C/G65/G20/G6F/G66/G20/G61/G20/G74/G77/G6F/G2D/G6C/G61/G79/G65/G72/G20/G50/G43/G42/G20/G6C/G61/G79/G6F/G75/G74/G20/G69/G73/G20/G67/G69/G76/G65/G6E/G20/G62/G65/G6C/G6F/G77/G20/G74/G6F /G69/G6C/G6C/G75/G73/G74/G72/G61/G74/G65/G20/G74/G68/G65/G73/G65/G20/G6C/G61/G79/G6F/G75/G74/G20/G70/G72/G69/G6E/G63/G69/G70/G6C/G65/G73/G2E /G43/G6F/G6E/G74/G72/G6F/G6C/G20/G4C/G6F/G6F/G70/G20/G44/G65/G73/G69/G67/G6E/G20/G28/G43/G6F/G6E/G74/G2E/G29 mag i() F i 10 100 1 10 3 1 10 4 1 10 5 1 10 6 100 Loop Gain Mag (d B) phase i() F i 10 100 1 10 3 1 10 4 1 10 5 1 10 6 180 135 Loop Gain Phas e (Degree) /G4C/G61/G79/G6F/G75/G74/G20/G47/G75/G69/G64/G65/G6C/G69/G6E/G65/G73 Fig. 2. Bode plot of the loop

/G31/G39 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G43/G6F/G6D/G70/G6F/G6E/G65/G6E/G74/G20/G53/G69/G64/G65/G20/G28/G54/G4F/G50/G29 /G43/G6F/G70/G70/G65/G72/G20/G28/G54/G4F/G50/G29 /G4C/G61/G79/G6F/G75/G74/G20/G47/G75/G69/G64/G65/G6C/G69/G6E/G65/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29

/G32/G30 /G32/G30/G30/G31/G20/G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G2E /G77/G77/G77/G2E/G73/G65/G6D/G74/G65/G63/G68/G2E/G63/G6F/G6D /G50/G4F/G57/G45/G52/G20/G4D/G41/G4E/G41/G47/G45/G4D/G45/G4E/G54 /G53/G43/G32/G34/G35/G30 /G53/G65/G6D/G74/G65/G63/G68/G20/G43/G6F/G72/G70/G6F/G72/G61/G74/G69/G6F/G6E /G50/G6F/G77/G65/G72/G20/G4D/G61/G6E/G61/G67/G65/G6D/G65/G6E/G74/G20/G50/G72/G6F/G64/G75/G63/G74/G73/G20/G44/G69/G76/G69/G73/G69/G6F/G6E /G36/G35/G32/G20/G4D/G69/G74/G63/G68/G65/G6C/G6C/G20/G52/G64/G2E/G2C/G20/G4E/G65/G77/G62/G75/G72/G79/G20/G50/G61/G72/G6B/G2C/G20/G43/G41/G20/G39/G31/G33/G32/G30 /G50/G68/G6F/G6E/G65/G3A/G20/G28/G38/G30/G35/G29/G34/G39/G38/G2D/G32/G31/G31/G31/G20/G20/G20/G46._/G41/G58/G20/G28/G38/G30/G35/G29/G34/G39/G38/G2D/G33/G38/G30/G34 /G4F/G75/G74/G6C/G69/G6E/G65/G20/G44/G72/G61/G77/G69/G6E/G67/G20/G2D/G20/G53/G4F/G2D/G32/G38/G57 /G43/G6F/G6E/G74/G61/G63/G74/G20/G49/G6E/G66/G6F/G72/G6D/G61/G74/G69/G6F/G6E /G43/G6F/G70/G70/G65/G72/G20/G28/G42/G4F/G54/G54/G4F/G4D/G29 /G4C/G61/G79/G6F/G75/G74/G20/G47/G75/G69/G64/G65/G6C/G69/G6E/G65/G73/G20/G28/G43/G6F/G6E/G74/G2E/G29 PGND AG ND

Summary

BI-Phase/Dual Controller

Description

The SC2450 can be configured as a dual converter or a bi-phase converter for high current applications. The part is designed for point of use power supplies with 8.5-30V nominal backplane power sources. Multiple supplies can be synchronized together to prevent low frequency harmonics on the backplane. The power dissipation is controlled using a novel low voltage supply technique, allowing high speed and integration, with the high drive currents to ensure low MOSFET switching loss.

Source title SC2450 Datasheet(PDF) - Semtech Corporation

Read SC2450 online.