Two-Phase Converter VRM8.5 Processor Intel Specification (FM-2137) Dat

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Two-Phase Converter VRM8.5 Processor Intel Specification (FM-2137) Dat

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CS5308DEMO/D Demonstration Note CS5308
Two-Phase Converter VRM8.5 Processor Intel Specification (FM-2137) Dated January 2001
DEMONSTRATION NOTE
Features Footprint CS5308 Controller, MOSFETs (2), Input Capacitors (2), Inductors (2); Footprint Output Capacitors Lossless Adaptive Positioning 5-Bit with Tolerance
Constant Frequency Design Hiccup Mode Current Limit Power Good Output with Internal Delay Monitoring VTTPGD
Figure CS5308 Demonstration Board
Semiconductor Components Industries, LLC, 2001
September, 2001 Rev.
Publication Order Number: CS5308DEMO/D
CS5308DEMO/D
Test Points Ground Pins Settings Enables Input Capacitors CS5308 Controller Output Inductors Input Inductor Connector
Simulated
Output Capacitors
PGA370 Socket Transient Test Tool Connector (VCORE)
Output (Top)
Return (Bottom)
Figure Application Diagram
CS5308DEMO/D
DESCRIPTION
Symbol Output Return Positions Position Position Position Connection Switch Descriptions impedance connection output voltage (VCORE). impedance return output voltage. switches Place switch open position "1". ENABLE converter function. This grounds CS5310 COMP pin. Place this switch open position enable able converter. ON/OFF control on-board generation circuit. schematic page function. Place this switch closed position enable supply.
MAXIMUM RATINGS 25°C)
Input/Output Name Input Input Output Current Minimum -0.3 -0.3 Maximum Internally Limited Unit
ELECTRICAL CHARACTERISTICS (25°C, Still Air, 11.8 12.2 unless otherwise noted.)
Parameter Output Voltage Output Voltage VOUT Peak-to-Peak Transient Response Output Ripple Noise Current Sharing Between Phases Conversion Efficiency from Supply Supply Current Supply Current Switching Frequency Enable/SS Time Overcurrent Threshold Power Good Threshold UVLO Start UVLO Stop UVLO Hysteresis UVLO Start UVLO Stop UVLO Hysteresis Test Conditions Load, 00111 Load, 00111 Load Current from Back A/µs Load, kHz, Limit Difference Between Highest Lowest Phase Currents VOUT, Out, VOUT, Out, Gates Switching Gates Switching, Load Gates Switching Gates Switching, Load ROSC 39.2 Output Inductors 66°C 1.727 1.630 1.03 4.05 3.75 1.752 1.655 1.05 4.30 4.10 1.777 1.680 1.07 4.50 4.35 Unit mVPP mVPP
CS5308DEMO/D
DEMO BOARD OUTPUT VOLTAGE SETTINGS LOAD (AVP Components: RFBK1 6.65 RDRP1 12.7
ROSC 39.2 (335 kHz)) Settings VID25 VID3 VID2 VID1 VID0 Nominal VCORE Intel 1.050 1.075 1.100 1.125 1.150 1.175 1.200 1.225 1.250 1.275 1.300 1.325 1.350 1.375 1.400 1.425 1.450 1.475 1.500 1.525 1.550 1.575 1.600 1.625 1.650 1.675 1.700 1.725 1.750 1.775 1.800 1.825 VID25, VID3, VID2, VID1, VID0 VID25, VID3, VID2, VID1, VID0 Demo Output Voltage 1.090 1.115 1.140 1.164 1.189 1.214 1.239 1.263 1.288 1.313 1.338 1.362 1.387 1.412 1.437 1.461 1.486 1.511 1.536 1.560 1.585 1.610 1.635 1.659 1.684 1.709 1.734 1.758 1.783 1.808 1.833 1.857 1.00 3.15 1.103 1.128 1.153 1.178 1.203 1.228 1.253 1.278 1.303 1.328 1.353 1.378 1.403 1.428 1.453 1.478 1.503 1.528 1.553 1.578 1.603 1.628 1.653 1.678 1.703 1.728 1.753 1.778 1.803 1.828 1.853 1.878 1.25 1.123 1.149 1.174 1.199 1.224 1.250 1.275 1.300 1.325 1.351 1.376 1.401 1.426 1.452 1.477 1.502 1.527 1.553 1.578 1.603 1.628 1.654 1.679 1.704 1.729 1.755 1.780 1.805 1.830 1.856 1.881 1.906 1.50 3.45 Units
Input Threshold Input Pull-Up Resistance Pull-Up Voltage
Operation shaded area limited switching frequency, input voltage, minimum pulse-width controller, maximum temperature. this case, increase ROSC reduce switching frequency, produce lower duty-cycle t_on f_switch) lower output voltage (i.e. VOUT VIN).
CS5308DEMO/D
OPERATING INSTRUCTIONS
Input Power
demo board includes connector (JP1) input power. This derived from either Power Supply separate supplies. supply must capable least 13.0 power full load. supply should capable least
Output Load
resistor divider between controller 1.25 reference modified investigate thresholds controller. maximum current drawn from this reference should less than open-collector VTTPGD signal pulled-up resistor must taken into account resistor divider modified.
VCCL Select
bottom demo board there "tab" connecting high current load. gold plated area component side (top) this provides impedance connection converter output. gold plated area solder side (bottom) impedance return connection. converter designed operate with continuous load between
Transient Test Tool
Near board zero-ohm resistors labeled "VCCL SELECT." RVCC1 populated on-chip, synchronous gate driver powered from RVCC2 populated gate driver powered from Vdc. default, RVCC1 been populated supply maximum gate drive, minimize resistance synchronous MOSFET, produce maximum converter efficiency.
Provisional Capacitors
large 370-pin socket board Intel's Transient Test Tool described Intel's Tualatin Processor Specification. connections this socket shown Figure demo board schematics page this document. socket populated PCB, Transient Test Tool function been finalized.
VCORE Measurements
connector demo board labeled VCORE. This useful making noise measurements VCORE when investigating transient performance making ripple measurements.
Simulated
There several areas where capacitors added: Output Electrolytic capacitors (C1, Co_1-Co_8), Input electrolytic capacitors (C11, C12, C31, C32) Output ceramic capacitors (C25-C30). These optional capacitors added reduce ripple, improve transient response, used investigate more, lower-cost, higher capacitors than those supplied board.
VFBK Select
simple regulator circuit, labeled "Simulated VTT," included generate 1.25 This circuit provides accurate reference on-chip monitoring circuitry controller will begin switching.
Just left CS5308 controller zero-ohm resistors labeled "VFBK SELECT." RVO1 populated output voltage sensed near lower-left corner PGA-370 socket. RVO2 populated output voltage sensed equidistant between output inductors, default, RVO2 been populated monitor output voltage between output inductors.
TP12 RFBK1 6.65 RFBK2 CFBK2
TP11
DCBUS TP15 VCORE
CAMP COMP
RCMP1 5.62 CCMP1 CCMP2 SIGGND
CVCC SIGGND
RVCC1
RVCC2 open
6SP680
6SP680
TP13 SWNODE1 open
COMP
GATE1
Figure Schematic, Control Associated Circuitry
RDRP2 open CDRP2 open VDRP CREF RDRP1 12.7
RCMP3 open CCMP3 open
ROSC 39.2
GATE2
RLIM1 6.34 RLIM2 SIGGND VID25 VID0 VID1 VID2 RVO2 VID3 PWRGD TP10 PWRGD CSREF RCSREF
ROSC COMP LGND VDRP VCCL CS5308 VCCH1 GATE(H)1 ILIM VID25 GATE(L)1 VID0 PGND VID1 VCCL12 VID2 GATE(L)2 GATE(H)2 VID3 PWRGD VCCH2 CSREF VTTPGD VTTCT CSREF RCS1
1000
CVCCH1 CVCC12
GATE3 TP14 SWNODE2
1000
CS5308DEMO/D
1000
CVCCH2 VTTCT CVTT 0.01 SIGGND RVTT
1000 1000
GATE4
RVO1 open
VTTPGD VTTPGD SWNODE1 SWNODE2
1000
RVO1: Sense PGA370 RVO2: Sense
CCS1 0.01
1000
CCSREF 0.01 SIGGND TP26
CCS2 0.01
RCS2
VCORE
SIGGND
SIGGND Ties Point Near VOUT
CS5308DEMO/D
+5.0
+5.0
PSON -5.0 +5.0 +5.0
+5.0 +5.0 PWRGD
TP16 +5.0 Rled1 LED1 PWRGD BSS123 SIGGND Rled2 LED2 Green TP17 TP18 TP19 TP20
TP21 TP22 TP23
TP24
TP25
Header 10x2_1
SIGGND
COMP VID0 VID1 VID2 VID3 open open
VCORE
DIP-8 SIGGND
open
open
open
open
RVTT1 +5.0 RVTT2
1.25
RVTT4
DCBUS
RVTT3 Provisional
ZR2431 SIGGND SIGGND
CVTT1 SIGGND
RVTT5
CVTT2 Provisional SIGGND
open open open open
SIGGND
Figure Schematic (continued), Simulated VTT, Connector, Additional Capacitors, LEDs
CS5308DEMO/D
AA33 AA35 AA37 AB32 AB34 AB36 AC33 AC35 AC37 AD32 AD34 AD36 AE33 AE35 AE37 AF32 AF34 AF36 AG33 AG35 AG37 AH10 AH12 AH14 AH16 AH18 AH20 AH22 AH24 AH26 AH28 AH30 AH32 AH34 AH46 AJ11 AJ13 AJ15 AJ17 AJ19 AJ21 AJ23 AJ25 AJ27 AJ29 AJ31 AJ33 AJ35 AJ37 AK10 AK12 AK14 AK16 AK18 AJ20 AK22 AK24 AK26 AK28 AK30 AK32 AK34 AK36 AL11 AL13 AL15 AL17 AJ19 AL21 AL23 AL25 AL27 AL29 AL31 AL33 AL35 AL37 AM10 AM12 AM14 AM16 AM18 AM20 AM22 AM24 AM26 AM28 AM30 AM32 AM34 AM36 AN11 AN13 AN15 AN17 AN19 AN21 AN23 AN25 AN27 AN29 AN31 AN33 AN35 AN37
VID0 VID2
VID1
VCORE
PGA370A
PGA370B VID3
PGA370C
Figure Schematic (continued), Transient Test Tool Pinout
CS5308DEMO/D
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency VOUT Output Current 87.5 Efficiency 82.5 Location 77.5 72.5 Output Current Ambient Flow) Droop Voltage (mV) Transient Output Current Static Output 265C Output 265C VOUT
COMPONENT TEMPERATURES: VOUT,
Location Ambient Flow) Output 265C Output 265C Shorted Output 265C
Figure Efficiency IOUT VOUT; kHz, RFBK1 6.65 RDRP1 12.7 ROSC 39.2
COMPONENT TEMPERATURES: VOUT,
Shorted Output 265C
Figure Efficiency IOUT VOUT T50-52 Core Bifilar, RFBK1 6.65 RDRP1 12.7 ROSC 39.2
Figure Static/Transient Droop Voltage from Nominal Output Current; RFBK1 6.65 RDRP1 12.7 ROSC 39.2
CS5308DEMO/D
TYPICAL PERFORMANCE CHARACTERISTICS
Figure Start-Up Full Load: COMP, Input Current, Output Voltage
Figure Load Change: IOUT, VOUT, Input Current
Figure Step Load A/ms): IOUT, VOUT, SWNODE1, SWNODE2
Figure VTT, VTTCT, VTTPGD, PWRGD: Normal Start (VTT "Gated"
Figure Step Load A/ms): IOUT, VOUT, SWNODE1, SWNODE2
Figure Output Ripple Load: VOUT, SWNODE COMP
CS5308DEMO/D
TYPICAL PERFORMANCE CHARACTERISTICS
Figure Output Shorted Steady State (Hiccup Mode): VOUT
Figure Gate High Rising Load, Non-Overlap
Figure Gate High Falling Load, Non-Overlap
Figure Gate High Rising Load, Non-Overlap
above waveform non-overlap time cannot measured previous waveform. Under load condition negative current output inductor forces switch node high soon synchronous (lower) MOSFET OFF. During non-overlap time, control (upper) MOSFET switch node clamped body diode control MOSFET. effective non-overlap time appears "shelf" SWNODE waveforms.
Figure Gate High Falling Load, Non-Overlap
CS5308DEMO/D
TYPICAL PERFORMANCE CHARACTERISTICS
Current Phase Phase Phase Difference
Output Current
Figure Typical Current Sharing Between Phases
Figure Multi-Phase Overlap Output
general, multi-phase controllers capable stable operation when multiple phases conducting (overlap) close overlapping. CS5308 utilizes "partial" internal ramps, improved noise immunity, meticulous internal layout/grounding offer unprecedented overlap capability. These improvements facilitate design ease layout requirements user. This picture demonstrates stable operation even with significant drop input inductor (L1) output VCORE. phases simultaneously conducting approximately time without false-triggering pulse skipping.
Figure Output Inductor Currents Load:
Figure Output Inductor Currents Load:
CS5308DEMO/D
BILL MATERIALS
Item Reference Part Mfg. Distributor Phone
Converter CS5308 Controller MOSFETs, SMT, TO-263 Semiconductor CS5308 Semiconductor NTB75N03-06 -06T4 Infineon IPB05N03L SPB80N03S2L-05 Siliconix SUB85N03-04R Rubycon 6.3ZA1000M10X16 6.3ZL1500M10X20 Oscon 6SP680M T30-26 Core Coiltronics CTX15-14771 50CR00 T50-52 Core Bifilar Coiltronics CTX22-15401 Panasonic ECJ-2VB2A392K Panasonic ECJ-2VB2A332K Panasonic ECJ-2VB2A471K Panasonic ECJ-2VB1E104K Panasonic ECJ-2YB1H103K Panasonic ECJ-3YB1E105K Panasonic ECJ-3YB0J106K Panasonic ERJ-6ENF5621 Panasonic ERJ-6ENF6341 Panasonic ERJ-6ENF2002 Panasonic ERJ-6ENF1003 Panasonic ERJ-6ENF1272 Panasonic ERJ-6ENF1001
Insight 781-270-9400 Pioneer 800-225-8344 Masline 716-546-5373 Capacitors Plus 800-422-7758 Coiltronics 561-241-7876
C2-C8
Capacitor, Electrolytic 1000 1500 Capacitor, Electrolytic 10.5 Inductor
Inductor
Coiltronics 561-241-7876
CAMP CCMP1 CFBK2 CCMP2, CVTT, CREF CCSREF, CCS1, CCS2 CVCCH1, CVCCH2, CVCC12, CVCC C13-C24 RCMP1 RLIM1 RCSREF RCS1, RCS2 RDRP1 RLIM2, RVTT
Capacitor, Ceramic 10%, 0805 Capacitor, Ceramic 10%, 0805 Capacitor, Ceramic 10%, 0805 Capacitor, Ceramic 10%, 0805 Capacitor, Ceramic 0.01 0805 Capacitor, Ceramic 10%, 1206 Capacitor, Ceramic 10%, 1206 Resistor 5.62 0805 Resistor 6.34 0805 Resistor 0805 Resistor 0805 Resistor 12.7 0805 Resistor 0805
Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key
CS5308DEMO/D
BILL MATERIALS (continued)
Item Reference Part Mfg. Distributor Phone
Converter ROSC RFBK1 Resistor 39.2 0805 Resistor 6.65 0805 Resistor 0805 Panasonic ERJ-6ENF3922 Panasonic ERJ-6ENF6651 Panasonic ERJ-6ENF1R00 Digi-Key Digi-Key Digi-Key
Miscellaneous LED1, LED2 Connector 8-Pos Switch BNC, Mount Voltage Reference 1.25 MOSFET, N-Channel LED, SMT, 1206 Pkg, Red, Green Molex 039281203 435640-5 Multicomp Zetec ZR2431 BSS123CT-ND Dialight 597-3111-402 (Red) 597-3311-402 (Green) Panasonic ECJ-3YB0J106K OPTIONAL Panasonic ERJ-6ENF7500 Panasonic ERJ-6ENF1002 OPTIONAL Panasonic ERJ-6ENF47R0 Panasonic ERJ-6ENF1301 Panasonic ERJ-6ENF0000 Panasonic ERJ-6ENF2001 Panasonic ERJ-6ENF1001 Samtech, Sullins, etc. Semiconductor 5308 3/2001 Many Many Farnell Digi-Key Digi-Key Newark
CVTT1 CVTT2 RVTT1 RVTT2, RVTT3 RVTT4 RVTT5 RVCC1, RVO2, RFBK2 RLED1 RLED2 TP1-TP25 U3-U5
Capacitor, Ceramic 1206 Capacitor, Ceramic OPTIONAL, 0805 Resistor 750, 0805 Resistor 0805 Resistor OPTIONAL, 0805 Resistor 0805 Resistor 0805 Resistor 0805 Resistor 0805 Resistor 0805 Test Points Printed Circuit Board PGA-370 Socket
Digi-Key OPTIONAL Digi-Key Digi-Key OPTIONAL Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Many Circuits, Inc. Many
CS5308DEMO/D
LAYOUT
Figure Component Layer
CS5308DEMO/D
LAYOUT
Figure Inverse Image Ground Layer
CS5308DEMO/D
LAYOUT
Figure Layer
CS5308DEMO/D
LAYOUT
Figure Bottom Layer
CS5308DEMO/D
LAYOUT
Figure Component Locations
CS5308DEMO/D
Semiconductor trademarks Semiconductor Components Industries, (SCILLC). SCILLC reserves right make changes without further notice products herein. SCILLC makes warranty, representation guarantee regarding suitability products particular purpose, does SCILLC assume liability arising application product circuit, specifically disclaims liability, including without limitation special, consequential incidental damages. "Typical" parameters which provided SCILLC data sheets and/or specifications vary different applications actual performance vary over time. operating parameters, including "Typicals" must validated each customer application customer's technical experts. SCILLC does convey license under patent rights rights others. SCILLC products designed, intended, authorized components systems intended surgical implant into body, other applications intended support sustain life, other application which failure SCILLC product could create situation where personal injury death occur. Should Buyer purchase SCILLC products such unintended unauthorized application, Buyer shall indemnify hold SCILLC officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs, damages, expenses, reasonable attorney fees arising directly indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that SCILLC negligent regarding design manufacture part. SCILLC Equal Opportunity/Affirmative Action Employer.
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CS5308DEMO/D

Two-Phase Converter VRM8.5 Processor Intel Specification (FM-2137) Dat

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