SC2642

SC2642 SEMTECH | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 10

Technical content

Features

The VID structure of the SC2642 supports VID-on-Fly ap- plications for any platform. The cycle-by-cycle current limit plus the intelligent over current shut down provide the maximum versatility of the system without false tripping under all possible changes of VID and load conditions. The differential voltage feedback sense eliminates the error caused by high load current on the ground plane. External offset is easy to achieve for any platforms and the VID settings. The enable function is also provided to interface with the corresponding system signal for correct start up timing and shut down timing.

2 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Typical Application Circuit Notes:(1) Output filter design: Please follow guidelines issued by Intel and AMD .(2) Please follow the guidelines issued by Intel and AMD . C92.2nF R17OFFSET- SC1214 912 TG1 DRN1 BST1 CO1 VPN1 NC CO2 BST2 NC VPN2 VREG2 PGND BG2TG2 VIN2 DRN2 VIN1 VREG1 BG1 PGND R141.5K ATX12V D1N4148 ATX12V 1800uF/16V C131nF 1800uF/16V PWRGOOD (Open Collector Output) R70R0 ATX12V (Open Collector/Drain Input, No Pull-up) VIN C21uF R11 R15 C14 VCC PN2 C16 VPN1 4.7uF/1206 C102.2nF VIN DIFFERENTIAL PAIRFOR REMOTE SENSE VIN R11R0 VID0 640nH VPN2 Note (2) C111uF VOUT VID2 PN1 VID5 R12 C15 R16 OFFSET+ +COUT1 C19 1800uF/16V C31nF VID4 C14.7uFD2 D1N4148 V_CORE- R18 V_CORE+ Note (2) VPN1 C200.1uF VIN R10 PGND VRM_EN VPN2 R2100 R51R0 C214.7uF 4.7uF/1206 C124.7uF R3IR0 SC2642 20123456789 10 11 12 1314 15 16 17 18 19 OS2OS1BGOUTERROUTGNDSENFBDACSTEPVCCVID4VID3 VID2 VID1 VID0 VID5 PGOOD OSCREF AGNDOUT1OUT2 OUTSEN R6100 VID3 R13 C17 ROSC1 VOUT Note (1) C181uF VID1 Pull-up VoltageVR10: 2VVRM9.x: 5VK-8: 12V VCC Note (1) VOUT R4IR0 Use the same powersource as FET driver

3 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Absolute Maximum Ratings

Electrical Characteristics

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. retemaraP lobmySm umixaMs tinU egatloVylppuSV CC 02V egatloVtuptuOtceriD/esneS-ibmoC NESTUO,2SO,1SO5 V nipycneuqerF,5DIVtpecxesnipDIV FERCSO,4DIV~0DIV7 V esnesdnuorG ESNESG3 .0ot3.0-V sniprehtollA 3.0+ccVV egnaRerutarepmeTtneibmAT A 501ot0 oC egnaRerutarepmeTnoitcnuJT J 521ot0 oC egnaRerutarepmeTegarotST GTS 051+ot56- oC .ceS01)gniredloS(erutarepmeTdaeLT DAEL 062 oC retemaraPl obmySs noitidnoCtseTn iMp yTx aMs tinU ylppuS_pihC egatloVylppuSCIV CC 5.72 14 1V tnerruCylppuSCII CC 013 1A m pUpmaROLVU 3.75 .7V nwoDpmaROLVU 4.66 .6V noitceSecnerefeR tuptuOpagdnaBV TUOGB C TUOGB Fn7.4=5 49.20 99.25 30.3V tnerruCecruoS 0220 030 33 µA noitcejeRylppuSV CC V0.41~V0.01=5 .0V /Vm ytilibatSerutarepmeT0 o T<C A 58< oC1 % petSDIV BSL,8-K,X.9MRV5 2V m petSDIVB SL,01MRV/DRV5 .21V m ycaruccAegatloVV TUO Vm02-=tesffolanretnI;01DRV5 .0-5 .0+% Vm02-=tesffolanretnI;x.9MRV1 -1 +% Vm52+=tesffolanretnI;8-K1 -1 +% noitceSrotallicsO ycneuqerFgnihctiwSR CSO esahpreP/K032=0 810 020 22z Hk egnaRycneuqerFgnihctiwSe sahpreP0 010 05z Hk ytilibatSerutarepmeT0 o T<C A 58< oC5 -/+% NOTE : 1) Guaranteed by design, not tested in production. Specifications subject to change without notice. Unless specified: VCC = 12V, VID=1.50V (101110,VRD10), FOSC = 200kHz/phase, TA = 27 o C. See Typical Application Circuit.

4 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Electrical Characteristics (Cont.) retemaraPs noitidnoCtseTn iMp yTx aMs tinU reifilpmArorrEegatloV egatloVtesffOtupnI 3-/+V m tnerruCsaiBtupnI 52A n niaGpooLnepOV <V1 TUORRE V4<0 8B d htdiwdnaBniaGytinUC TUORRE Fp01=0 1z HM etaRwelS 01/ V µS niaGecnatcudnocsnarT 5.0V /Am PCOroflevelpmalC 4.4V ycaruccAlevelpmalC 8-8 +% sreifilpmAesneStnerruC egatloVtesffOtupnI 3-/+V m tnerruCsaiBtupnI 05A n niaG 01V /V RRMCV 3ot00 8B d egnaRedoMnommoCtupnI 3.0-3 V hctaMniaG 2% htdiwdnaB 6z HM reifilpmApoorD niaG 4.5V /V ycaruccAniaG )1( 5-/+% sDIV dlohserhtegatlovwoltupnI] 5:0DIV[2 .1V dlohserhtegatlovhgihtupnI] 5:0DIV[8 .1V tnerrucsaiBV 0=]4:0DIV[0 215 810 52A u 01MRV/DRVrofegatlovpullup5DIV5 DIV8 .15 .2V X.9MRVrofegatlovpullup5DIV5 DIV4 6 V 8-Krofegatlovpullup5DIV5 DIV8 C CVV dooGrewoP gnisiRdlohserhT dlohserhTdooGrewoP-DIV0 520 530 04V m gnillaFdlohserhT dlohserhTdooGrewoP-DIV5 75V m egakaeLhgiHtuptuOV =doogrwP CC 001A n kniSwoLtuptuOV 8.0=doogrwP2 A m noitceStimiLtnerruC egatloVnwodtuhS dlohserhTnwoDtuhS-DIV0 550 560 57V m NOTE : 1) Guaranteed by design, not tested in production. Specifications subject to change without notice. Unless specified: VCC = 12V, VID=1.50V (101110,VRD10), FOSC = 200kHz/phase, TA = 27 o C. See Typical Application Circuit.

5 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Pin Configurations Pin Descriptions

Ordering Information

#niPe maNniPn oitcnuFniP 11 SO. 1tupniesnestnerruC 2T UOGB. DNGAotpactratstfostcennoC.nipecnereferGB 3T UORRE .DNGAotkrowtennoitasnepmoctcennoC.tuptuoreifilpma-rorrE 4E SNESG .tekcosUPCehtotriaplaitenreffidasaecartBFhtiwtuoR.DNGrofesnesetomeR 5B F. nipkcabdeeF 6P ETSCAD .etarwelsCADehtmargorpotDNGAotpacatcennoC.gnittesdeepspetsDIV 7C CV. pihcrofylppusrewoP 84 DIV. BSMDIV

93 DIV

012 DIV

111 DIV

210 DIV. BSLDIV 315 DIV .X.9MRVrofV5otpu-llup5DIV;8-KrofCCVotpu-llup5DIV.01RVroftibVm5.21 41D OOGP. tuptuotcelloCnepO.doogrewoP 51F ERCSO. DNGAotrotsiseratcennoC.gnittesycneuqerfrotallicsO 61D NGA. slangisgolanarofdnuorgnaelC 711 TUO. 1tuptuoMWP 812 TUO. 2tuptuoMWP 91N ESTUO. esnestuptuotceriD 022 SO. 2tupniesnestnerruC (20-Pin TSSOP) Top View rebmuNtraPe gakcaPT (egnaR.pmeT J) RTST2462CS )1( 02-POSST5 21ot0 OC TRTST2462CS )2()1( 02-POSST5 21ot0 OC BVE2462CSd raoBnoitaulavE Note: (1) Only available in tape and reel packaging. A reel contains 2500 devices. (2) Lead free package. Device is fully WEEE and RoHS compliant.

6 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Block Diagram R DACSTEP 6 BGOUT 2 OUT DRV1 OS1 1 DRV2 VID5 13 R C/A1 DROOP 11111 INHIBIT R S Q VID0 12 ERROUT3 OUTSEN OSCILLATOR OSC ROSC Ramp OUT C/A2 R Errout GSENSE 4 OUTSEN R VCC PWM1 BGOUT VID0 VID1 VID2 VID3 VID4 VID5 VDAC Shut Down VCC7 OUT PGOOD14 PWM2 VCC GSEN VREF OUT OUT R PWR_GOOD OUT VID1 11 OUT -FB 5 AGND16 BUFFER OUT218 ERROUT BANDGAP OUT BGOUT OUT117 OUTSEN 19 DAC VBG VID4 8 CLOCK DIVIDER CLK P1 Power Good Threshold VID2 10 VBG OUT OS2 20 OCP & SHUTDOWM VID3 9 R S Q E/A OSCREF 15 UVLO & LATCH

7 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Applications Information- Output Voltage egatloVtuptuOX.9MRV T.)gnitaolFro(hgiH=1;DNG=0:deificepssselnU A 52= o V,C CC V21= tuoV )V(4DIV3 DIV2 DIV1 DIV0 DIV FFO 1.1 521.1 51.1 571.1 2.1 522.1 52.1 572.1 3.1 523.1 53.1 573.1 4.1 524.1 54.1 574.1 5.1 525.1 55.1 575.1 6.1 526.1 56.1 576.1 7.1 527.1 57.1 577.1 8.1 528.1 58.1

8 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Applications Information- Output Voltage (Cont) egatloVtuptuO01DRV T.hgiH=1;DNG=0:deificepssselnU A 52= o V,C CC V21= tuoV )V(5DIV4 DIV3 DIV2 DIV1 DIV0 DIV 5738.0 0058.0 5268.0 0578.0 5788.0 0009.0 5219.0 0529.0 5739.0 0059.0 5269.0 0579.0 5789.0 0000.1 5210.1 0520.1 5730.1 0050.1 5260.1 0570.1 5780.1 FFO FFO 0001.1 5211.1 0521.1 5731.1 0051.1 5261.1 0571.1 5781.1 0002.1 5212.1 0522.1 5732.1 0052.1 5262.1 0572.1 5782.1 0003.1 5213.1 0523.1 5733.1 0053.1 5263.1 0573.1 5783.1 0004.1 5214.1 0524.1 5734.1 0054.1 5264.1 0574.1 5784.1 0005.1 5215.1 0525.1 5735.1 0055.1 5265.1 0575.1 5785.1 0006.1

9 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Applications Information- Output Voltage (Cont) egatloVtuptuO8-K T.)gnitaolFro(hgiH=1;DNG=0:deificepssselnU A 52= o V,C CC V21= 4DIV3 DIV2 DIV1 DIV0 DIVV TUO )V( 00000 0 55.1 00001 5 25.1 00010 0 05.1 00011 5 74.1 00100 0 54.1 00101 5 24.1 00110 0 04.1 00111 5 73.1 01000 0 53.1 01 001 5 23.1 01 01 0 0 03.1 01 011 5 72.1 011 00 0 52.1 011 01 5 22.1 01110 0 02.1 01111 5 71.1 10000 0 51.1 10001 5 21.1 100 10 0 01.1 100 11 5 70.1 10 100 0 50.1 10 10 1 5 20.1 10 110 0 00.1 10111 5 79.0 11000 0 59.0 11001 5 29.0 11010 0 09.0 11011 5 78.0 11100 0 58.0 11101 5 28.0 11110 0 08.0

11111 F FO

10 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2642 Contact Information Semtech Corporation Power Management Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 Outline Drawing - TSSOP-20 Land Pattern - TSSOP-20 L (L1) c GAGE PLANE SEE DETAI L DETAI L AA 0. 25 .026 BSC .252 BSC .0 04 .169 .251 .1 73 .2 55 .007 - 0.10 0. 65 BSC 6. 40 BSC 4.40 6.50 .177 .259 4.30 6.40 .012 0.19 4. 50 6. 60 0. 30 bxN 2X N/2 TIPS SEATI NG aaa C E/ 2 I NDI CATOR PI N 1 1 32 N bbb C A- B D ccc C DI MENSI ONS "E1" AND "D" DO NOT I NCLUDE MOLD FLASH, PROTRUSI ONS3. OR GATE BURRS. D A TU M S A N D TO B E D E TE R M IN E D A T D ATU M P LA N E CONTROLLI NG DI MENSI ONS ARE I N MI LLI METERS ( ANGLES I N DEGREES) . -B- NOTES: 2. -A- -H- SI DE VI EW (.039) .0 04 .0 08 .0 24 .018 .003 .031 .002 8° 0° 0.20 0.10 - 8° 0.45 0.09 0.80 0.05 .030 .007 .047 .042 .006 (1.0) 0.60 0. 75 0. 20 - 1. 20 1. 05 0. 15 A B C De e/2 HPLANE D E A2 A REFERENCE JEDEC STD MO-153, VARI ATI ON AC.4. I NCHES b N ccc aaa bbb E L e D c DI M A MI N MAX MI LLI METERS MI N DI MENSI ONS NOM MAX NOM (.222) (5.65) ZG Y P (C ) 4.10.161 0.65.026 0.40.016 1.55.061 7.20.283 X I NCHES DI MENSI ONS Z P Y X DI M C G MI LLI METERS THI S LAND PATTERN I S FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURI NG GROUP TO ENSURE YOUR COMPANY' S MANUFACTURI NG GUI DELI NES ARE MET. NOTES: