SEMTECH SC2647

SC2647 Multi-Platform Multi-Phase PWM Controller POWER MANAGEMENT Description The VID structure of the SC2647 supports VID-on-Fly ap- The SC2647 provides microprocessor core voltage plications for any platform. The cycle-by-cycle current regulation solution up to 4 paralleled PWM channels. The limit plus the intelligent over current shut down provide solution can also be configured as 2, 3, or 4-phase form. the maximum versatility of the system without false Multi-phase buck regulator utilizes the phase-shift tim- tripping under all possible changes of VID and load ing control to allow interleaved switching of the power conditions. The differential voltage feedback sense switches. This architecture minimizes the core voltage eliminates the error caused by high load current on the ripple and the input current ripple, which leads to opti- ground plane. External offset is easy to achieve for any mized voltage regulator design for power density, tran- platforms and the VID settings. The enable function is sient responses, and the thermal performances. also provided to interface with the corresponding sys- tem signal for correct start up timing and shut down To satisfy the highly dynamic nature of the modern timing. microprocessors, the SC2647 adopts peak current mode (Multiple Patents Pending) (Multiple Patents Pending) (Multiple Patents Pending) (Multiple Patents Pending) (Multiple Patents Pending) control topology which ensures wide control loop bandwidth and fast transient responses. The current Features mode control provides intrinsic phase current matching. The maximum ripple frequency is greater than 1MHz. ‹ VRD/VRM10.0, VRM9.X, and K-8 compliant ‹ Core Voltage Set Point Accuracy 0.5% TM One of the outstanding features of the SC2647 is its ‹ Combi-Sense Current Mode Control voltage regulation accuracy. Not only it provides better ‹ Intrinsic Phase Current Matching than 0.5% set point accuracy, but also the accuracy to ‹ Fast Transient Responses fully complaint with the stringent load line slope ‹ Active Droop with Temperature Compensation to specifications mandated by the modern microprocessors. Meet Load Line Slope Lossless output current sensing ensures the regulator ‹ Support VID-on-Fly with 5 or 6 bit VID output voltage is accurately positioned according to the ‹ Enable Function for Power Sequencing load current condition, and an internal temperature ‹ Cycle-by-Cycle Peak Current Limit compensation technology further enhances the perfor- ‹ Intelligent Over Current Shut Down mance of voltage accuracy. ‹ Over Voltage Protection When Using Semtech TM Combi-Sense Driver/1211VX TM The patented Combi-Sense topology is employed by ‹ Under Voltage Protection Built in SC2647. The MOSFET R and the output inductor ‹ External programmable Soft-Start ds(on) winding resistance is used to generate the phase cur- ‹ Externally programmable switching frequency. TM rent information. The SC1211VX Combi-Sense MOSFET ‹ 2, 3, or 4-Phase Configurations driver plus the SC2647 enables the complete solution. ‹ 24-Pin SOIC or TSSOP Packages ‹ This device is fully WEEE and RoHS Compliant The SC2647 is a multi-platform controller. It conforms TM to Intel VRM/VRD10.0, VRM9.X, and AMD K-8 (Opteron ) VID specifications. With very minor changes of the sche- Applications matic and the layout, the SC2647 based solution can be ‹ Voltage Regulator VRD/VRM10.0 ported form one platform to another. This greatly ben- ‹ Voltage Regulator VRM9.X efits the system manufactures for reductions of design ‹ Voltage Regulator K-8 cycle and minimize the inventory management. ‹ High Current, Low Voltage Step Down DC/DC Converters July, 12, 2006 1 www.semtech.com SC2647 POWER MANAGEMENT Typical Application Circuit 2 2 2 1 1 1 1 8 1 8 1 8 DRN BG DRN BG DRN BG 2 7 2 7 2 7 TG VCC TG VCC TG VCC 3 6 3 6 3 6 BST VIN BST VIN BST VIN 4 5 4 5 4 5 CO VPN CO VPN CO VPN 2 1 © 2006 Semtech Corp. 2 www.semtech.com VIN L1 Adaptor_In 640nH 5V R1 D1 C3 5V M1 2R2 D1N4148 1uF VOUT AUX1 AUX2 AUX3 R2 R3 R4 PN3 PN3 R5 C4 U1 R6 L2 C5 SC1211VX C6 R7 C7 R8 C8 R9 1nF 9 1 PGND R10 C9 AUX3 R12 100 M2 U2 1 24 C12 OS3 OS4 2 23 VCC 4.7uF VIN OS2 OUTSEN 3 22 VIN VRM_EN OS1 OUT4 R13 D2 C13 (Open Collector Input, No Pull-up) 4 21 BGOUT OUT3 M3 R15 1.5K 5 20 D1N4148 1uF ERROUT OUT2 OFFSET+ VCC R14 C16 6 19 GNDSEN OUT1 PN2 VOUT 1uF VCC 7 18 FB AGND R16 C2 U3 R17 L3 PN2 OFFSET- C17 C18 0.1uF 8 17 C19 DACSTEP OSCREF SC1211VX Rosc 9 16 1nF 9 1 VCC PGOOD PGND 5V 10 15 R19 VID4 VID5 AUX2 R20 100 11 14 M4 VID3 VID0 Cout 10 C21 12 13 + VID2 VID1 Note (2) 1uF C23 PGND SC2647 VID0 4.7uF VIN VIN VID1 D3 C24 VID2 M5 VID3 D1N4148 1uF VID4 V_CORE- PN1 DIFFERENTIAL PAIR U4 R21 L4 PN1 V_CORE+ FOR REMOTE SENSE C27 SC1211VX 1nF 9 1 PGND Vcc Note (2) Note (3) AUX1 Note (1) R23 100 M6 Rx R24 C30 VID5 0R0 4.7uF VIN Ry PWRGOOD (Open Collector Output) 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. SC2647 POWER MANAGEMENT Absolute Maximum Ratings 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. Parameter Symbol Maximum Units Supply Voltage V 20 V CC Combi-Sense/Direct Output Voltage OS1, OS2, OS3, OS4, OUTSEN 5 V o Ambient Temperature Range T 0 to 105 C A o 0 to 125 C Junction Temperature Range T J o Storage Temperature Range T -65 to +150 C STG o Lead Temperature (Soldering) 10 Sec. T 300 C LEAD ESD Rating (Human Body Model) ESD 2 kV Electrical Characteristics o Unless specified: V = 5V, VID=1.30V (110110,VRD10) or 1.50V (101110,VRD10), F = 600kHz, T = 27 C. See Typical Application Circuit. CC OSC A Pl arameter Ss ymboTn est Condition Mp i Tx y Ms a Unit Chip_Supply IV C Supply Voltage 45 .7 7 V CC II C Supply Current 9A .5 m CC UVLO Ramp Up 4V .3 UVLO Hysterisis 3V 00 m Reference Section BV andgap Output C=3 4.7nF V BGOUT BGOUT SV ource Current B0 G=0 27 μA SV ink Current B0 G=4 -50 μA SV upply Rejection =5 4.7V ~ 7V 0V . mV/ CC o o T0 emperature Stability C < T < 85C50% . A VID Step V5 RM9.X, K-8, LSB 2V m VID Step V5 RD/VRM10, LSB 1V 2. m V5 RD10 ; Internal offset=-20mV-5 0. +% 0. VV oltage Accuracy V1 RM9.x ; Internal offset=-20mV-1+% OUT K1 -8 ; Internal offset=+25mV -1+% Oscillator Section OR scillator Frequency =0 309Kohm 50 4 60 0 6z 6 kH OSC o o T0 emperature Stability C < T < 85C5+% /- A © 2006 Semtech Corp. 3 www.semtech.com SC2647 POWER MANAGEMENT Electrical Characteristics (Cont.) o Unless specified: V = 5V, VID=1.30V (110110,VRD10) or 1.50V (101110,VRD10), F = 600kHz, T = 27 C. See Typical Application Circuit. CC OSC A Ps arameter Tn est Condition Mp i Tx y Ms a Unit Voltage Error Amplifier Input Offset Voltage +V /-3 m Input Bias Current 2A 5 n OV pen Loop Gain 1V <<0 3.6V 8B d ERROUT UC nity Gain Bandwidth =0 10pF 1z MH ERROUT Slew Rate 2/ V μS Transconductance Gain 0V .5 mA/ Current Sense Amplifiers Input Offset Voltage +V /-3 m Input Bias Current 5A 0 n Gain 9V .5 V/ CV MRR 00 to 3 8B d Input Common Mode Range -3 0.3 V Gain Match 2% Bandwidth 6z MH Droop Amplifier Gain 5V .2 V/ VIDs L] ogic Threshold [2 VID0:4 18 . 1V . P] ull-up Impedance [0 VID0:4 1m Koh V5 ID5 Logic Threshold for VRD/VRM10 V2 ID 18 . 1V . VID5 Clamping voltage 2V .7 Vk ID5 Selection Threshold for VRM9.XV9 ID5/Sin 4A u Vk ID5 Selection Threshold for K-8 V5 ID5/Sin 2A 0 u 3-Phase Operation Output 4 pull up Threshold 31 .74V . Power Good Threshold Rising V0 ID - Power Good Threshold 3V 3 m Threshold Falling V0 ID - Power Good Threshold 5V 6 m OV utput High Leakage Pwrgood = 1A 00 n CC OV utput Low Sink P2 wrgood = 0.8 mA Current Limit Section Max. Error Amp Voltage for Current Limit 3V .6 Shutdown Voltage V0 ID - Shut Down Threshold 6V 0 m © 2006 Semtech Corp. 4 www.semtech.com SC2647 POWER MANAGEMENT Pin Configurations Ordering Information Top View Pe art NumberPT ackag Temp. Range ( ) J (1) O SC2647SWTRS5 OIC-24 0 to 12 C 1 24 OS4 OS3 (1) O SC2647TSTRT5 SSOP-24 0 to 12 C 2 23 OUTSEN OS2 3 22 OUT4 OS1 (1,3) O SC2647TSTRTT5 SSOP-24 0 to 12 C 4 21 OUT3 BGOUT 5 20 OUT2 ERROUT (2) SC2647EVB Evaluation Board 6 19 OUT1 GSENSE Note: 7 18 AGND FB 8 17 (1) Only available in tape and reel packaging. A reel contains 1000 devices OSCREF DACSTEP for the SOIC-24 and 2500 devices for the TSSOP-24 package. 9 16 PGOOD VCC (2) Specify SOIC-24 or TSSOP-24 package. 10 15 VID5 VID4 (3) Lead free product. This product is fully WEEE and RoHS compliant. 11 14 VID0 VID3 12 13 VID1 VID2 (24-Pin SOIC/TSSOP) Pin Descriptions 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 VID4 : 0 VID MSB to VID 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. © 2006 Semtech Corp. 5 www.semtech.com SC2647 POWER MANAGEMENT Block Diagram C/A1 3 + OS1 DRV1 PWM1 OUT + - OUT R Q 19 OUT1 C/A2 - S 2 + OS2 DRV2 PWM2 OUT + - OUT R Q 20 OUT2 C/A3 - S 1 + OS3 DRV3 PWM3 OUT + - OUT R Q 21 OUT3 C/A4 - S 24 + OS4 DRV4 PWM4 OUT + - OUT R Q 22 OUT4 OUTSEN - S 23 OUTSEN Errout OSCILLATOR Ramp CLOCK DIVIDER 17 ROSC OSCREF OSC CLK P1 P2 P3 SEL3 P4 11111 14 + VID0 INHIBIT DAC OUT 3 PHASE 13 VID1 SELECT - 2R VID0 12 VID1 3/4 Phase selection VID2 VID2 VDAC - Threshold VID3 2R 11 VID4 OUT VID3 VID5 0 + 10 VID4 R 15 VID5 VBG PWR_GOOD 8 + 16 DACSTEP PWRGD OUT OUTSEN DROOP Power Good Threshold - R + 0 OUT - E/A ERROUT 7 - FB R OUT 5 R ERROUT + R OCP & SHUTDOWM BGOUT - 0 4 OUT BGOUT BUFFER + 9 VCC VCC BANDGAP UVLO & VCC VREF 18 LATCH AGND BGOUT 6 GSEN GNDSEN VBG © 2006 Semtech Corp. 6 www.semtech.com Shut Down SC2647 POWER MANAGEMENT Applications Information- Output Voltage VRM9.X Output Voltage o Vout Unless specified: 0 = GND; 1 = High (or Floating). T = 25 C, V = 5V A CC (V) VID4 VID3 VID2 VID1 VID0 1 1 1 1 1 OFF 1 1 1 1 0 1.1 1 1 1 0 1 1.125 1 1 1 0 0 1.15 1 1 0 1 1 1.175 1 1 0 1 0 1.2 1 1 0 0 1 1.225 1 1 0 0 0 1.25 1 0 1 1 1 1.275 1 0 1 1 0 1.3 1 0 1 0 1 1.325 1 0 1 0 0 1.35 1 0 0 1 1 1.375 1 0 0 1 0 1.4 1 0 0 0 1 1.425 1 0 0 0 0 1.45 0 1 1 1 1 1.475 0 1 1 1 0 1.5 0 1 1 0 1 1.525 0 1 1 0 0 1.55 0 1 0 1 1 1.575 0 1 0 1 0 1.6 0 1 0 0 1 1.625 0 1 0 0 0 1.65 0 0 1 1 1 1.675 0 0 1 1 0 1.7 0 0 1 0 1 1.725 0 0 1 0 0 1.75 0 0 0 1 1 1.775 0 0 0 1 0 1.8 0 0 0 0 1 1.825 0 0 0 0 0 1.85 © 2006 Semtech Corp. 7 www.semtech.com SC2647 POWER MANAGEMENT Applications Information- Output Voltag VRD10 Output Voltage o Vout Unless specified: 0 = GND; 1 = High. T = 25 C, V = 5V A CC (V) VID5 VID4 VID3 VID2 VID1 VID0 0 0 1 0 1 0 0.8375 0 1 0 0 1 0.8500 1 0 0 1 0 0 1 0.8625 1 0 1 0 0 0 0.8750 0 0 1 0 0 0 0.8875 1 0 0 1 1 1 0.9000 0 0 0 1 1 1 0.9125 1 0 0 1 1 0 0.9250 0 0 0 1 1 0 0.9375 1 0 0 1 0 1 0.9500 0 0 0 1 0 1 0.9625 1 0 0 1 0 0 0.9750 0 0 0 1 0 0 0.9875 1 0 0 0 1 1 1.0000 0 0 0 0 1 1 1.0125 1 0 0 0 1 0 1.0250 0 0 0 0 1 0 1.0375 1 0 0 0 0 1 1.0500 0 0 0 0 0 1 1.0625 1 0 0 0 0 0 1.0750 0 0 0 0 0 1.0875 0 1 1 1 1 1 1 OFF 0 1 1 1 1 1 OFF 1 1 1 1 1 0 1.1000 0 1 1 1 1 0 1.1125 1 1 1 1 0 1 1.1250 0 1 1 1 0 1 1.1375 1 1 1 1 0 0 1.1500 0 1 1 1 0 0 1.1625 1 1 1 0 1 1 1.1750 0 1 1 0 1 1 1.1875 1 1 1 0 1 0 1.2000 0 1 1 0 1 0 1.2125 1 1 1 0 0 1 1.2250 0 1 1 0 0 1 1.2375 1 1 1 0 0 0 1.2500 0 1 1 0 0 0 1.2625 1 1 0 1 1 1 1.2750 0 1 0 1 1 1 1.2875 1 0 1 1 0 1.3000 1 0 1 0 1 1 0 1.3125 1 1 0 1 0 1 1.3250 0 1 0 1 0 1 1.3375 1 1 0 1 0 0 1.3500 0 1 0 1 0 0 1.3625 1 1 0 0 1 1 1.3750 0 1 0 0 1 1 1.3875 1 1 0 0 1 0 1.4000 0 1 0 0 1 0 1.4125 1 1 0 0 0 1 1.4250 0 1 0 0 0 1 1.4375 1 1 0 0 0 0 1.4500 0 1 0 0 0 0 1.4625 1 0 1 1 1 1 1.4750 0 0 1 1 1 1 1.4875 1 0 1 1 1 0 1.5000 0 0 1 1 1 0 1.5125 1 0 1 1 0 1 1.5250 0 1 1 0 1 1.5375 0 1 0 1 1 0 0 1.5500 0 0 1 1 0 0 1.5625 1 0 1 0 1 1 1.5750 0 0 1 0 1 1 1.5875 1 0 1 0 1 0 1.6000 © 2006 Semtech Corp. 8 www.semtech.com SC2647 POWER MANAGEMENT Applications Information- Output Voltag K-8 Output Voltage o Unless specified: 0 = GND; 1 = High (or Floating). T = 25 C, V = 5V A CC V3 ID4 V2 ID V1 ID V0 ID VV ID (V) OUT 00000 1.550 0000 1 1.525 000 1 0 1.500 000 11 1.475 00 1 0 0 1.450 00 1 0 1 1.425 00 11 0 1.400 00 111 1.375 0 1 000 1.350 01 0 0 1 1.325 01 01 0 1.300 01 01 1 1.275 01 1 0 0 1.250 01 1 0 1 1.225 0 111 0 1.200 0 1111 1.175 1 0000 1.150 1 000 1 1.125 10 0 1 0 1.100 10 0 1 1 1.075 10 10 0 1.050 10 10 1 1.025 10 1 1 0 1.000 1 0 111 0.975 11 000 0.950 11 00 1 0.925 11 0 1 0 0.900 11 0 1 1 0.875 111 00 0.850 111 0 1 0.825 1111 0 0.800 11111 OFF © 2006 Semtech Corp. 9 www.semtech.com SC2647 POWER MANAGEMENT Outline Drawing - SOIC-24 DIMENSIONS A D INCHES MILLIMETERS e DIM N MIN NOM MAX MIN NOM MAX A .093 - .104 2.35 - 2.65 - - A1 .004 .012 0.10 0.30 - - A2 .081 .100 2.05 2.55 2X E/2 - - b .012 .020 0.31 0.51 c - - .008 .013 0.20 0.33 D .602 .606 .610 15.30 15.40 15.50 E1 .291 .295 .299 7.40 7.50 7.60 E1 E E .406 BSC 10.30 BSC R e .050 BSC 1.27 BSC - - h .010 .030 0.25 0.75 J .020 - .030 0.50 - 0.75 L .016 - .041 0.40 - 1.04 L1 (.041) (1.04) N 24 24 13 2 ccc C R .024 - .035 0.60 - 0.90 2X N/2 TIPS 01 0 - 8 0 - 8 e/2 aaa .004 0.10 B bbb .010 0.25 D ccc .013 0.33 h aaa C A2 A h SEATING H PLANE bxN A1 C bbb C A-B D c GAGE J PLANE 0.25 L 01 (L1) SEE DETAIL A DETAIL A SIDE VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A - AND -B - TO BE DETERMINED AT DATUM PLANE -H- 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 4. REFERENCE JEDEC STD MS-013, VARIATION AD. Land Pattern - SOIC-24 X DIMENSIONS DIM INCHES MILLIMETERS (.362) (9.20) C (C) G Z G .276 7.00 P .050 1.27 X .024 0.60 Y .087 2.20 Z .449 11.40 Y P NOTES: 1. TH IS LAND PATTERN IS FO R R EFERENCE PURPO SES O NLY. CO NSU LT YO U R M A NUFA C TURING G R O U P TO E N SURE Y O UR CO M PANY'S M ANU FACTU RING G UIDELINES AR E M ET. 2. REFEREN CE IPC -SM -782A, R LP NO . 307A. Contact Information Semtech Corporation Power Management Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2006 Semtech Corp. 10 www.semtech.com SC2647 POWER MANAGEMENT Outline Drawing - TSSOP-24 DIMENSIONS A INCHES MILLIMETERS DIM D MIN NOM MAX MIN NOM MAX e - - - - A .047 1.20 N - - A1 .002 .006 0.05 0.15 A2 .031 - .042 0.80 - 1.05 2X E/2 - - b .007 .012 0.19 0.30 c - - .003 .007 0.09 0.20 D .303 .307 .311 7.70 7.80 7.90 E1 E E1 .169 .173 .177 4.30 4.40 4.50 PIN 1 INDICATOR E .252 BSC 6.40 BSC e .026 BSC 0.65 BSC L .018 .024 .030 0.45 0.60 0.75 (.039) (1.0) ccc C 1 2 3 L1 e/2 N 24 24 2X N/2 TIPS - - 01 0 8 0 8 B aaa .004 0.10 bbb .004 0.10 ccc .008 0.20 D aaa C A2 A SEATING PLANE H C A1 bxN c bbb C A-B D GAGE PLANE 0.25 L 01 (L1) DETAIL A SEE DETAIL A SIDE VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUM S -A A - ND T -B- O BE DETERM INED AT DATUM PLANE -H- 3. DIM ENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 4. REFERENCE JEDEC STD MO-153, VARIATION AD. Land Pattern - TSSOP-24 X DIMENSIONS DIM INCHES MILLIMETERS C (.222) (5.65) G .161 4.10 (C ) G Z P .026 0.65 X .016 0.40 Y .061 1.55 Y Z .283 7.20 P NOTES: 1. TH IS LAND PAT TE R N IS FO R R EFE R ENCE PU R P O S ES O N LY. CO NSULT YO UR M A N U FACTU R IN G G R O U P TO EN SU RE YO UR C O M PA N Y'S M AN U FAC TU R IN G G U ID ELIN E S AR E M E T. Contact Information Semtech Corporation Power Management Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2006 Semtech Corp. 11 www.semtech.com