The VRM10 non-isolated DC-DC converters are designed to meet the
exceptionally fast transient response requirements of today’s microproces-
sors and fast switching logic in a compact size at a very affordable price.
Advanced circuit techniques, component selection and placement optimi-
zation, state-of-the-art thermal packaging, and surface-mount technolo-
gies provide a high power density, highly reliable, and very precise voltage
regulation system for advanced microprocessors.
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Embedded Power for
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VRM10 Series
Single Output
Special Features
• Designedforuseinlow
proleapplicationswhere
VRM10.0or10.1specica-
tions are required
• Outputcurrentupto105A
continuous
• Open-collectorpowergood
(PWRGD) output
• 6-bitmicroprocessorvoltage
identicationinput(VID)
•0.8375Vdcto1.6000Vdc
in12.5mVsteps
•AllowsdynamicVID
code changes
• Differentialremotesensefor
improved load regulation
• Verticalplug-intostandard
motherboard connector
• Selectableoutputloadline
impedances, via LL0 and LL1
• Outputover-voltagesignal
(OVP)
• Monotonicoutputturn-on
and turn-off with no
overshoot or undershoot
• RoHScompliant
• 2YearWarranty
Input Voltage: 12 Vdc
# of Outputs: Single
Safety
VDECerticate
No.2487000-3336-0016
Rev.07.20.07
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Unlessotherwisestated,allspecicationsaretypicalatnominalinput,maximum
continuousratedloadat25°CandvoltagesarereferencedtoVin-.
Specifications
OUTPUT SPECIFICATIONS
Voltage adjustability
(SeeVIDcodes,Table3) 0.8375-1.6000Vdc
Outputcurrent(Iout) 0Amin.
VRM10-85-12-UY Continuous 85Amax.
Peak non-sustained 100 A max.
VRM10-80-12-PY Continuous 80Amax.
Peak non-sustained 91 A max.
VRM10-105-12-EJ Continuous 105Amax.
Peak non-sustained 120 A max.
Loadline(LL)adjustability 0.91-1.25mW
(See LL codes, Table 1)
Outputvoltage(Vout) Vomax VID-Rout*IoutV
(Vosen+minusVosen-) Vomin VID-Rout*Iout-0.040V(-U/-E)
(SeeNotes3,B) Vomin VID-Rout*Iout-0.038V(-P)
Where VID=programmedvoltage(V)
Rout Fixed or programmable
output impedance (W)
Iout Outputcurrent(A)
Rippleandnoise 20MHzbandwidth 8mVpk-pk
(See Notes 1, 2)
Short circuit protection Continuous current limit,
brickwall automatic recovery
Remotesensingcompensatingvoltage Upto300mVmax.
INPUT SPECIFICATIONS
Inputvoltagerange 12Vinnominal 11.0-12.6Vdc
Inputcurrent
VRM10-85-12-UY 11Vin,VID=1.325V,Iout=100A 15.3A
VRM10-80-12-PY 11Vin,VID=1.400V,Iout=91A 14.2A
VRM10-105-12-EJ 11VIN,VID=1.325V,Iout=120A 18.5A
Noload 250mAtyp.,300mAmax.
OUTENOFF 50mAmax.
UVLOturnONvoltage 0ºC<tamb<60ºC 9.5V±2.6%
UVLOturnOFFvoltage 0ºC<tamb<60ºC 8.7V±4.5%
Hysteresis 0.8Vtyp
Start-uptime 11.0V<Vin<12.6V 10msmax.
(using OUTEN) (PWRGD transitioning high
INPUT SPECIFICATIONS CONTD.
OUTEN,VIDandLLsignalvalidstates:
ONorLogic‘1’ 0.8Vdcmin.,5.5Vdcmax.
OFForLogic‘0’ -0.3Vdcmin.,0.4Vdcmax.
GENERAL CHARACTERISTICS
Efciency Seetable2onpage2 VID=1.325V
Switchingfrequency 80A/85A 2.2MHz
Fixed(SeeNote4) 105A 1.1MHz
Approvalsandstandards (SeeNote5) IEC/EN60950VDE
Materialammability UL94V-0
Weight 80A/85A 38g(1.34oz)
105A 70g(2.47oz)
MTBF 80A/85A 2,000,000hours
TelecordiaSR-332 105A 1,648,000hours
Matingconnector 80A/85A SeeFigure7
105A SeeFigure8
Connectorngers Goldplated,30µ-inches
ENVIRONMENTAL SPECIFICATIONS
Temperature shock Operating 10 °C/hour
non-operating 20 °C/hour
Humidity Operating 85%RH
(Non-condensing) storage 95%RH
Altitude Operating 10,000 feet max.
storage 50,000feetmax.
Shock Operationaland 30G11ms
non-operational Halfsinewave
Vibration Operational and 0.02 G2/Hzmax.
(SeeNote6) non-operational
Thermal performance Operating ambient 0 °Cto+60°C
(SeeNote7) temperature
Storage temperature (Non-condensing) -40 °C to + 100 °C
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Specifications
Table 1: LL0, LL1 Load Line Codes
MODEL LL0 LL1 LOAD LINE SLOPE, Rout UNITS
VRM10-85-12-UY 0 0 1.25 mW
VRM10-85-12-UY 0 1 1.25 mW
VRM10-85-12-UY 1 0 1.25 mW
VRM10-85-12-UY 1 1 Reserved mW
VRM10-80-12-PY N/A N/A 1.24 mW
VRM10-105-12-EY 0 0 1.25 mW
VRM10-105-12-EY 0 1 1.25 mW
VRM10-105-12-EY 1 0 1.25 mW
VRM10-105-12-EY 1 1 Reserved mW
Notes
1 Recommendedoutputcapacitance,12x560µFaluminiumpolymerand44
x10µFMLCCforslewratesupto430A/µs,14x560µFaluminumpolymer
and45x10µFMLCCforslewratesupto930A/µs.
2 8mVpk-pkripple.Vin=12V,Vout=1.35V,Iout=85A.
3 Withtherecommendedcapacitors(SeeNote1)acrosstheoutput,the
output voltage stays within the load regulation window for all loads and
transientevents,upto100AfortheVRM10-85-12-UY(91AfortheVRM10-
80-12-PY)overa20MHzbandwidth,0ºC<Tamb<60ºC.
4 VRM10 uses a four phase buck topology. Each phase switches at
550KHzfortheVRM10-85-12-UYandVRM10-80-12-PY.Thisgivesan
equivalentswitchingfrequencyof2.2MHz.FortheVRM10-105-12-EJ,each
phaseswitchesat275KHz.Thisgivesanequivalentswitchingfrequencyof
1.1MHz
5 Recommendedinputfusing:one20A(ortwo10Ainparallel)veryfast
acting fuse(s). The VRM10 is a high current device. Use appropriate
care in handling and installation of this device, which is intended only for use
within enclosed equipment.
6 0.01G2/Hzfrom5Hzto20Hz,maintaining0.02G2/Hzfrom20Hzto500
Hz,allaxes.
7 Maximumcurrentrequiresadequateforcedairovertheconverter.Please
consultFigures2and3forthermalde-rating.
8 WhentheVRMdetectsanoutputover-voltageevent,theOVPpintransitions
to logic high. This signal can be used to shut down the supply to the VRM, or
drive a crowbar device.
9 Pins12and51arenotconnectedonVRM10-80-12-PY.OnVRM10-85-12-
UY,donotleavethesepinsoating.
10 When included in the users system ESD event shall cause no out-of-
regulation conditions.
11 The‘Y’sufxindicatesthatthesepartsareTSERoHS5/6(nonPb-free)
compliant.
EFFICIENCY TABLE
OUTPUT VOLTAGE EFFICIENCY (typ.)
VID=1.325V@85A 85%
VID=1.325V@80A 85%
VID=1.325V@105A 84%
Table 2: Efficiency Values
INPUT OUTPUT OUTPUT OUTPUT OUTPUT EFFICIENCY REGULATION MODEL
VOLTAGE VOLTAGE OVP
(8) CURRENT CURRENT CURRENT (TYP.) LOAD NUMBER
(MIN) (MAX.) (MAX.)
CONTINUOUS NON-SUSTAINED
12Vdc 0.8375-1.6000Vdc 1.8V 0A 80A 91A 85% 1.24mV/A VRM10-80-12-PY(11)
12Vdc 0.8375-1.6000Vdc 1.8V 0A 85A 100A 85% SeeTable1 VRM10-85-12-UY(11)
12Vdc 0.8375-1.6000Vdc 1.8V 0A 105A 120A 84% Seetable1 VRM10-105-12-EY(11)
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Specifications
VOLTAGE IDENTIFICATION (VID) CODES
VID4 VID3 VID2 VID1 VID0 VID5 VID (V)
0 1 0 1 0 0 0.8375
0 1 0 0 1 1 0.8500
0 1 0 0 1 0 0.8625
0 1 0 0 0 1 0.8750
0 1 0 0 0 0 0.8875
0 0 1 1 1 1 0.9000
0 0 1 1 1 0 0.9125
0 0 1 1 0 1 0.9250
0 0 1 1 0 0 0.9375
0 0 1 0 1 1 0.9500
0 0 1 0 1 0 0.9625
0 0 1 0 0 1 0.9750
0 0 1 0 0 0 0.9875
0 0 0 1 1 1 1.0000
0 0 0 1 1 0 1.0125
0 0 0 1 0 1 1.0250
0 0 0 1 0 0 1.0375
0 0 0 0 1 1 1.0500
0 0 0 0 1 0 1.0625
0 0 0 0 0 1 1.0750
0 0 0 0 0 0 1.0875
1 1 1 1 1 1 OFF
1 1 1 1 1 0 OFF
1 1 1 1 0 1 1.1000
1 1 1 1 0 0 1.1125
1 1 1 0 1 1 1.1250
1 1 1 0 1 0 1.1375
1 1 1 0 0 1 1.1500
1 1 1 0 0 0 1.1625
1 1 0 1 1 1 1.1750
1 1 0 1 1 0 1.1875
1 1 0 1 0 1 1.2000
VOLTAGE IDENTIFICATION (VID) CODES (CONTD.)
VID4 VID3 VID2 VID1 VID0 VID5 VID (V)
1 1 0 1 0 0 1.2125
1 1 0 0 1 1 1.2250
1 1 0 0 1 0 1.2375
1 1 0 0 0 1 1.2500
1 1 0 0 0 0 1.2625
1 0 1 1 1 1 1.2750
1 0 1 1 1 0 1.2875
1 0 1 1 0 1 1.3000
1 0 1 1 0 0 1.3125
1 0 1 0 1 1 1.3250
1 0 1 0 1 0 1.3375
1 0 1 0 0 1 1.3500
1 0 1 0 0 0 1.3625
1 0 0 1 1 1 1.3750
1 0 0 1 1 0 1.3875
1 0 0 1 0 1 1.4000
1 0 0 1 0 0 1.4125
1 0 0 0 1 1 1.4250
1 0 0 0 1 0 1.4375
1 0 0 0 0 1 1.4500
1 0 0 0 0 0 1.4625
0 1 1 1 1 1 1.4750
0 1 1 1 1 0 1.4875
0 1 1 1 0 1 1.5000
0 1 1 1 0 0 1.5125
0 1 1 0 1 1 1.5250
0 1 1 0 1 0 1.5375
0 1 1 0 0 1 1.5500
0 1 1 0 0 0 1.5625
0 1 0 1 1 1 1.5750
0 1 0 1 1 0 1.5875
0 1 0 1 0 1 1.6000
Table 3: Voltage Identification Codes
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Specifications
ELECTROMAGNETIC COMPATIBILITY
CHARACTERISTIC - SIGNAL NAME SYMBOL MIN TYP MAX UNITS NOTES AND CONDITIONS
ESD-operating 15 kVIEC61000-4-2.
(SeeNote10)  Inenduserequipment
ESD-non-operating 25 kV IEC61000-4-2.
Inenduserequipment
Radiatedemissions B Class FCCandEN55022.
 Inenduserequipment
Inputcharacteristics:
Inputcurrent-operating IIN 10.7 AVin=Vin (typ.),
  Iout (cont.)=85A,VID=1.325V
Inputcapacitance-externalbypass CINext 680 1000 µF
SIGNAL ELECTRICAL INTERFACE
CHARACTERISTIC - SIGNAL NAME SYMBOL MIN TYP MAX UNITS NOTES AND CONDITIONS
OUTEN - on VOUTEN (on) 0.8 5.5 V Nopullupresistorprovidedbythe
VRM
OUTEN - off VOUTEN (off) -0.3 0.4 V Nopullupresistorprovidedbythe
VRM
OUTEN-leakagecurrent -1 1 µA
PWRGD - low VPWRGD (low) 0.4 V Sink current 4 mA
PWRGD-sinkcurrent IPWRGD (sink) 4 mA Open-collector output to not more
 than5.5V
PWRGD-lowthreshold 72 74 76 % PercentageofVIDcodesetting
PWRGD - turn-on response to Trise 0 4 10 ms For waveforms, refer to Application
OUTENgoinghigh Note171
VID-high Vih(VID) 0.8 5.5 V
VID-low Vil(VID) -0.3 0.4 V
VID-pullupcurrent I(VID) 35 50 65 µA
OVP signal trip point R (VID) 1.7 VID+0.2 V
OVPdrivevoltage 1.9(5.5) V Iovp=-100mA(Iovp=-1mA)
LL - high Vih (LL) 0.8 5.5 V VRM10-85-12-UYonly
LL - low Vil (LL) -0.3 0.4 V VRM10-85-12-UYonly
LL - input impedance Zi (LL) 2.18 2.21 kWVRM10-85-12-UYonly
VR_Hot#-low VVR_HOT#(low) 0 0.4 V Sinkcurrent30mA.VR_HOT#is
pulled as a thermal event is
present in the VRM
VR_Hot#-sinkcurrent IVR_HOT#(sink) 0 30mAOpen-collectoroutputtonotmore
than Vin. Sinks current as long as
thermal event is present in the VRM
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Specifications
Figure 2: Thermal Derating Curve for VRM10-80-12-PY
(See Note A)
CONTINUOUS OUTPUT CURRENT (A)
AMBIENT TEMPERA TURE (ºC )
60
65
70
75
80
25 30 35 40 45 50 55 60
300 LFM
400 LFM
400 LFM
500 LFM
500 LFM
600 LFM
600 LFM
VID ≤ 1.4V
VID > 1.4V
Figure 1: Thermal Derating Curve for VRM10-85-12-UY
(See Note A)
CONTINUOUS OUTPUT CURRENT (A)
AMBIENT TEMPERA TURE (ºC )
60
65
70
75
80
25 30 35 40 45 50 55 60
85
300 LFM
400 LFM
400 LFM
500 LFM
500 LFM
600 LFM
600 LFM
VID ≤ 1.4V
VID > 1.4V
OUTPUT VOLT AGE (V)
OUTPUT CURRENT (A)
Max.
11.0Vin
12.6Vin
12.0Vin
Min.
VID-0.04
VID
020406080 100 120
VID-LL x 0.04
VID - 0.04
Vout
Vo min. = VID - Rout * Iout - Vwindow
Vo max. = VID - Rout * Iout
CONTINUOUS OUTPUT CURRENT (A)
AMBIENT TEMPERATURE (ºC)
20
30
40
0102030405060
50
300 LFM
400 LFM
400 LFM
500 LFM
500 LFM
600 LFM
600 LFM
VID ≤ 1.4V
VID > 1.4V
60
70
80
90
100
110
Notes
A FortheLFMandVIDconditionsgraphed,thereisnoderatingbetween0 ºC
and25ºC.
B Forloadregulationequations:VIDisinVolts,programmedbytheVIDbits
(refertoTable3);RoutisinW’s, programmed by the LL bits (refer to Table
1);andtheoutputcurrent,Ioutisinamps.VWindowis0.040forVRM10-85-
12-UYand0.038forVRM10-80-12-PY.
C EfciencyVsloadplottedisrepresentativeofatypicalVRM10-85-12-UYwith
VID=1.4V,LL0=0,LL1=1.
D ShownforaVRM10-80-12-PwithVID=1.4V.
Figure 4: Load Regulation (See Notes 3 and B)Figure 3: Thermal Derating Curve for VRM10-105-12-EY
(See Note A)
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Specifications
Figure 5: Typical Efficiency Vs Load (See Note C)
For VRM10-85-12-UY and VRM10-80-12-PY
EFFICIENCY (%)
OUTPUT CURRENT (A)
Vin = 11.0
V
Vin = 12.0
V
Vin = 12.6
V
80
81
82
83
84
85
86
87
88
89
90
020406080 100
Figure 6: Short Circuit and Over Current Protection (See Note D)
For VRM10-85-12-UY and VRM10-80-12-PY
OUTPUT VOLT AGE (V)
OUTPUT CURRENT (A)
Vin = 11.0
V
Vin = 12.0
V
Vin = 12.6
V
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
020406080 100 120 140
1.6
Figure 5a: Typical Efficiency Vs Load (See Note C)
For VRM10-105-12-EJ
EFFICIENCY (%)
OUTPUT CURRENT (A)
Vin = 11.0V
Vin = 12.0V
Vin = 12.6V
0
20
40
60
80
100
020406080100 120
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Specifications
PIN CONNECTIONS
PIN NO. FUNCTION PIN NO. FUNCTION
1 Vin+ 62 Vin-
2 Vin+ 61 Vin-
3 Vin+ 60 Vin-
4 Vin+ 59 Vin-
5 N/U 58 VRM_pres#
6 VID4 57 Key
7 VID3 56 VID2
8 VID1 55 VID0
9 OVP 54 VID5
10 PWRGD 53 Outen
11 Vosen- 52 Vosen+
12 LL0
(9) 51 LL1(9)
13 Vo- 50 Vo+
14 Vo+ 49 Vo+
15 Vo- 48 Vo-
16 Vo+ 47 Vo+
17 Vo- 46 Vo-
18 Vo+ 45 Vo+
19 Vo- 44 Vo-
20 Vo+ 43 Vo+
21 Vo- 42 Vo-
22 Vo+ 41 Vo+
23 Vo- 40 Vo-
24 Vo+ 39 Vo+
25 Vo- 38 Vo-
26 Vo+ 37 Vo+
27 Vo- 36 Vo-
28 Vo+ 35 Vo+
29 Vo- 34 Vo-
30 Vo+ 33 Vo+
31 Vo- 32 Vo-
Dimensions in Inches (mm)
To lerances (unless otherwise specified)
2 Places ±0.02 Holes ±0.005
3 Places ±0.010 Angles ±2 Degrees
Third Angle Project
i
0.065 (1.65)
Ref THK
0.46
(11.6) Ref
2.85
(72.4) Ref.
1
62 32
31
0.248 (6.30) Max
Comp HT
0.915
(23.24)
C
L
C
L
30 EQ Spaces
@ 0.100 ± 0.002 (2.54 ±0.05)
each Equals 3.000 (76.20)
TOL Non-Accum
0.093
(2.36)
0.543
(13.79)
0.300 (7.62)
KEY SLOTS
0.500
(12.70)
0.042 Typ
(1.07) ±0.002 0.050
(1.27)
32
62
0.200 (5.08)
0.700
(17.78)
R0.079
(R2.00) (2Pls)
0.039 (1.00)
0.17 (4.3) Ref
3.186 (80.92) ±0.002
0.17 (4.3) Ref
0.62
(15.7) Ref
1.240
(31.50) Ref
Figure 7: 80/85 A Mechanical Drawing and Pinout Table
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Specifications
PIN CONNECTIONS
PIN NO. FUNCTION PIN NO. FUNCTION
1 Vin- 54 Vin+
2 Vin- 53 Vin+
3 Vin- 52 Vin+
4 VID4 51 VID3
5 VID2 50 VID1
6 VID0 49 VID5
7 Vosen+ 48 Vo_sen-
8 VccPWRGD 47 VR_HOT#
9 Outen 46 LL0(9)
10 OVP 45 LL1(9)
11 NA 44 NA
12 VRM_pres# 43 NA
13 Vo+ 42 Vo+
14 Vo+ 41 Vo+
15 Vo+ 40 Vo+
16 Vo- 39 Vo-
17 Vo- 38 Vo-
18 Vo- 37 Vo-
19 Vo+ 36 Vo+
20 Vo+ 35 Vo+
21 Vo+ 34 Vo+
22 Vo- 33 Vo-
23 Vo- 32 Vo-
24 Vo- 31 Vo-
25 Vo+ 30 Vo+
26 Vo+ 29 Vo+
27 Vo+ 28 Vo+
Figure 8: 105 A Mechanical Drawing and Pinout Table
Dimensions in Inches Approx Metric
Equiv in (mm)
To lerances (unless otherwise specifie
d
3 Places ±0.010 (0.25), 2 Places ±0.02 (0.5)
Third Angle Projections
0.519
(13.19) (55.47)
0.34 (8.63)
0.16 (4.13)
0.50 MAX
1.00 MAX
(25.4 MAX)
q
0.079(2.00)
REF
MATING CONNECTOR
ELCON #283-0172-01303B
Conn Mtg Plane
0.50 MAX
0.975
(24.77)
2.184
1.160 (29.46)
0.571 (14.50)
(3 PLACES)
3.675 (93.35)
0.071 (1.80)
(3 PLACES)
27
1
3.00 (76.07)
3.35 (85.09)
127
28
54
1.250 MAX
INSTALLED
HEIGHT
(31.75 MAX)
(12.7 MAX) (12.7 MAX)
313
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Embedded Power for
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Rev.07.20.07
vrm10 series
10 of 10
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