SC2647

SC2647 SEMTECH | Alldatasheet

Document overview

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Technical content

Features

The VID structure of the SC2647 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 sys- tem signal for correct start up timing and shut down timing. (Multiple Patents Pending)(Multiple Patents Pending)(Multiple Patents Pending)(Multiple Patents Pending)(Multiple Patents Pending)

2© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Typical Application Circuit R10 Ry R13 1.5K (Open Collector Input, No Pull-up) R17 AUX2 C24 1uF VIN C17 VIN R14 PN1 VI N R21 VOUT VID2 1nF Vcc VID5 V_CORE- C27 1nF 2R2 C13 1uF AUX3 VIN PN3 Note (2) R24 0R0 R20

10 C21

V_CORE+ VOUT VRM_EN C30 4.7uF Notes: (1) Output filter design: Please follow guidelines issued by Intel and AMD . (2) Please follow the guidelines issued by Intel and AMD . (3) See application notes for VID table selection. AUX2 Rosc VID0 R23 100 R15 OFFSET+ VID3 C23 4.7uF PN3 R19 100 R12 100 C16 1uF PN1 C19 1nF VCC Note (3) D1N4148 Rx 640nH VCC VIN Cout R16 OFFSET- SC1211VX 4 5 8DRN TG BST CO VPN VIN VCC PGND BG Note (2) D1N4148 1uF SC2647 12 13 24OS3 OS2 OS1 BGOUT ERROUT GNDSEN FB DACSTEP VCC VID4 VID3 VID2 VID1 VID0 VID5 PGOOD OSCREF AGND OUT1 OUT2 OUT3 OUT4 OUTSEN OS4 AUX1 C12 4.7uF Note (1) SC1211VX 4 5 8DRN TG BST CO VPN VIN VCC PGND BG AUX1 PWRGOOD (Open Collector Output) PGND Adaptor_In DIFFERENTIAL PAIR FOR REMOTE SENSE VID4 AUX3 C18 0.1uF VCC

3© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Absolute Maximum Ratings

Electrical Characteristics

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of th e parameters specified in the Electrical Characteristics section is not implied. Unless specified: V CC = 5V, VID=1.30V (110110,VRD10) or 1.50V (101110,VRD10), F OSC = 600kHz, T A = 27 o C. See Typical Application Circuit. retemaraPl obmySs noitidnoCtseTn iMp yTx aMs tinU ylppuS_pihC egatloVylppuSCIV CC 7.45 7 V tnerruCylppuSCII CC 5.9A m pUpmaROLVU 3.4V sisiretsyHOLVU 003V m noitceSecnerefeR tuptuOpagdnaBV TUOGB C TUOGB Fn7.4=3 V tnerruCecruoSV 0=GB0 72 μA tnerruCkniSV 4=GB0 05- μA noitcejeRylppuSV CC V7~V7.4=5 .0V /Vm ytilibatSerutarepmeT0 o T<C A 58< oC5 .0% petSDIV BSL,8-K,X.9MRV5 2V m petSDIV BSL,01MRV/DRV5 .21V m ycaruccAegatloVV TUO Vm02-=tesffolanretnI;01DRV5 .0-5 .0+% Vm02-=tesffolanretnI;x.9MRV1 -1 +% Vm52+=tesffolanretnI;8-K1 -1 +% noitceSrotallicsO ycneuqerFrotallicsOR CSO mhoK903=0 450 060 66z Hk ytilibatSerutarepmeT0 o T<C A 58< oC5 -/+% Parameter Symbol Maximum Units Supply Voltage V CC 20 V Combi-Sense/Direct Output Voltage OS1, OS2, OS3, OS4, OUTSEN 5 V Ambient T emperature Range T A 0 to 105 oC Junction Temperature Range T J 0 to 125 oC Storage T emperature Range T STG -65 to +150 oC Lead T emperature (Soldering) 10 Sec. T LEAD 300 oC ESD Rating (Human Body Model) ESD 2 kV

4© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Electrical Characteristics (Cont.) Unless specified: V CC = 5V, VID=1.30V (110110,VRD10) or 1.50V (101110,VRD10), F OSC = 600kHz, T A = 27 o C. See Typical Application Circuit. retemaraPs noitidnoCtseTn iMp yTx aMs tinU reifilpmArorrEegatloV egatloVtesffOtupnI 3-/+V m tnerruCsaiBtupnI 52A n niaGpooLnepOV <V1 TUORRE V6.3<0 8B d htdiwdnaBniaGytinUC TUORRE Fp01=0 1z HM etaRwelS 2/ V μS niaGecnatcudnocsnarT 5.0V /Am sreifilpmAesneStnerruC egatloVtesffOtupnI 3-/+V m tnerruCsaiBtupnI 05A n niaG 5.9V /V RRMCV 3ot00 8B d egnaRedoMnommoCtupnI 3.0-3 V hctaMniaG 2% htdiwdnaB 6z HM reifilpmApoorD niaG 2.5V /V sDIV dlohserhTcigoL] 4:0DIV[2 .18 .1V ecnadepmIpu-lluP] 4:0DIV[0 1m hoK 01MRV/DRVrofdlohserhTcigoL5DIV5 DIV2 .18 .1V egatlovgnipmalC5DIV 7.2V X.9MRVrofdlohserhTnoitceleS5DIVk niS/5DIV9 4A u 8-KrofdlohserhTnoitceleS5DIVk niS/5DIV5 02A u noitarepOesahP-3 dlohserhTpullup4tuptuO 7.31 .4V dooGrewoP gnisiRdlohserhT dlohserhTdooGrewoP-DIV0 33V m gnillaFdlohserhT dlohserhTdooGrewoP-DIV0 65V m egakaeLhgiHtuptuOV =doogrwP CC 001A n kniSwoLtuptuOV 8.0=doogrwP2 A m noitceStimiLtnerruC timiLtnerruCrofegatloVpmArorrE.xaM 6.3V egatloVnwodtuhS dlohserhTnwoDtuhS-DIV0 06V m

5© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Pin Configurations Pin Descriptions

Ordering Information

(24-Pin SOIC/TSSOP) Top View VID1 VID0 OUT1 OUT2 OUT3 OUT4 OS4 OUTSEN VID5 PGOOD OSCREF AGND VID2 VID3 GSENSE ERROUT BGOUT OS1 OS3 OS2 VID4 VCC DACSTEP FB Note: (1) Only available in tape and reel packaging. A reel contains 1000 devices for the SOIC-24 and 2500 devices for the TSSOP-24 package. (2) Specify SOIC-24 or TSSOP-24 package. (3) Lead free product. This product is fully WEEE and RoHS compliant. rebmuNtraPe gakcaPT (egnaR.pmeT J) RTWS7462CS )1( 42-CIOS5 21ot0 OC RTST7462CS )1( 42-POSST5 21ot0 OC TRTST7462CS )3,1( 42-POSST5 21ot0 OC BVE7462CS )2( draoBnoitaulavE Pin# Pin Name Pin Function 1 OS3 Current sense input. 2 OS2 Current sense input.Connect to OUTSEN for 2 phase operation. 3 OS1 Current sense input. 4 BGOUT BG reference pin.Connect soft start cap from this pin to AGND. 5 ERROUT Error-amplifier output.Connect compensation network to AGND. 6 GSENSE Remote sense for GND. 7 FB Feedback pin.Route FB and GENSE as differential pair to CPU. 8 DACSTEP VID step speed.Connect a cap from this pin to AGND to filter DAC output. 9 VCC Power supply for chip. 10~14 VI D4 : 0 VI D MSB to VI D LSB. 15 VID5 12.5mV bit for VRD10.x. Pull it up to >2V and program the sink current to selectVRM9 or K8 VID table. 16 PGOOD Power good, Open collector output. 17 OSCREF Oscillator frequency setting .Connect a resistor to AGND. 18 AGND Clean ground for analog signals. 19 OUT1 PWM output1. 20 OUT2 PWM output2. 21 OUT3 PWM output3. 22 OUT4 PWM output4. Connect to VCC for 3 phase operation. 23 OUTSEN Direct output sense. 24 OS4 Current sense input. Connect to OUTSEN for 2 or 3 phase operation.

6© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Block Diagram OUT DRV3 OS3 1 VCC GSEN VREF OS2 2

3 PHASE

R VID0 14 OS1 3 R S Q VID3 11 DROOP VID5 15 OUT321 DACSTEP 8 OUT PWR_GOOD R S Q ERROUT5 OUT422 E/A OUT119 OSCREF 17 R S Q BGOUT R S Q BUFFER OUTSEN 23 ERROUT OUT CLOCK DIVIDER CLK SEL3 OUTSEN R R BANDGAP VBG VID2 12 OUT GNDSEN 6 VCC R C/A1 OUT R PWRGD16 OSCILLATOR OSC ROSC Ramp DAC C/A2 3/4 Phase selection Threshold OUT AGND18 OUT OUT BGOUT 4 OUT C/A3 FB 7 OCP & SHUTDOWM DRV1 C/A4 OS4 24 UVLO & LATCH OUT VID0 VID1 VID2 VID3 VID4 VID5 VDAC Shut Down OUT PWM1 OUT220 OUT BGOUT OUT PWM2 11111 INHIBIT VCC9 PWM3 OUTSEN DRV4 VID4 10 Errout Power Good Threshold OUT DRV2 VBG PWM4

7© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Applications Information- Output Voltage VRM9.X Output Voltage Unless specified: 0 = GND; 1 = High (or Floating). TA = 25oC, VCC = 5V Vout (V)VID4 VID3 VID2 VID1 VID0 OFF 1.1 1.125 1.15 1.175 1.2 1.225 1.25 1.275 1.3 1.325 1.35 1.375 1.4 1.425 1.45 1.475 1.5 1.525 1.55 1.575 1.6 1.625 1.65 1.675 1.7 1.725 1.75 1.775 1.8 1.825 1.85

8© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Applications Information- Output Voltag VRD10 Output Voltage Unless specified: 0 = GND; 1 = High. T A = 25 oC, V CC = 5V Vout (V)VID5 VID4 VID3 VID2 VID1 VID0 0.8375 0.8500 0.8625 0.8750 0.8875 0.9000 0.9125 0.9250 0.9375 0.9500 0.9625 0.9750 0.9875 1.0000 1.0125 1.0250 1.0375 1.0500 1.0625 1.0750 1.0875 OFF OFF 1.1000 1.1125 1.1250 1.1375 1.1500 1.1625 1.1750 1.1875 1.2000 1.2125 1.2250 1.2375 1.2500 1.2625 1.2750 1.2875 1.3000 1.3125 1.3250 1.3375 1.3500 1.3625 1.3750 1.3875 1.4000 1.4125 1.4250 1.4375 1.4500 1.4625 1.4750 1.4875 1.5000 1.5125 1.5250 1.5375 1.5500 1.5625 1.5750 1.5875 1.6000

9© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Applications Information- Output Voltag egatloVtuptuO8-K T.)gnitaolFro(hgiH=1;DNG=0:deificepssselnU A 52= o V,C CC V5= 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© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 Land Pattern - SOIC-24 Outline Drawing - SOIC-24 bbb C A-B D SEE DETAIL A L (L1) 0.25 PLANE GAGE c (.041) .013 .004 .016 .008 .081 .004 .093 8 0 0.33 0.10 .050 BSC .406 BSC .010 .291 .295 .012 - 0.25

1.27 BSC

10.30 BSC

7.50 .299 7.40 .020 0.31 7.60 0.51 .606 2X N/2 TIPS SEATING aaa C E/2 ccc C 213 N AA2 A1bxN D PLANE REFERENCE JEDEC STD MS-013, VARIATION AD.4. ccc aaa bbb MAX DIMENSIONS e L N R J h c E D b MINDIM A INCHES NOM MILLIMETERS NOMMIN MAX E DETAIL A - 8 0.40 0.20 2.05 0.10 .041 .013 .104 .100 .012 2.35 (1.04) 1.04 0.33 - 2.65 2.55 0.30 h h J 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. -B- CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). DATUMS AND TO BE DETERMINED AT DATUM PLANE NOTES: 2. -A- -H- SIDE VIEW A B C De H e/2 R THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES: REFERENCE IPC-SM-782A, RLP NO. 307A.2. (.362) (9.20) ZG Y P (C) 7.00.276 1.27.050 0.60.024 2.20.087 11.40.449 X INCHES DIMENSIONS Z P Y X DIM C G MILLIMETERS Contact Information Semtech Corporation Power Management Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804

11© 2006 Semtech Corp. www.semtech.com POWER MANAGEMENT SC2647 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-24 Land Pattern - TSSOP-24 L (L1) c GAGE PLANE SEE DETAIL DETAIL AA 0.25 .026 BSC .252 BSC .004 .169 .303 .173 .307 .007 - 0.10

0.65 BSC

6.40 BSC

4.40 7.80 .177 .311 4.30 7.70 .012 0.19 4.50 7.90 0.30 bxN 2X N/2 TIPS SEATING aaa C E/2 INDICATOR PIN 1 1 32 N REFERENCE JEDEC STD MO-153, VARIATION AD.4. INCHES b N ccc aaa bbb E L e D c DIM A MIN MAX MILLIMETERS MIN DIMENSIONS NOM MAX NOM E AA2 bbb C A-B D ccc C DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS3. OR GATE BURRS. DATUMS AND TO BE DETERMINED AT DATUM PLANE CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). -B- NOTES: 2. -A- -H- SIDE VIEW (.039) .004 .008 .024 .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 THI S LAND PATTERN I S FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES: (.222) (5.65) ZG Y P (C) 4.10.161 0.65.026 0.40.016 1.55.061 7.20.283 X INCHES DIMENSIONS Z P Y X DIM C G MI LLI METERS