Embedded Power for
Business-Critical Continuity
Notes:
1 Recommendedoutputcapacitance,48x22µFceramicMLCC.
2 50mVpk-pkripple.Vin=12V,Vout=1.5V,Iout=80A.
3 Withtherecommendedcapacitors(SeeNote1)acrosstheoutput,theoutput
voltage stays within the load regulation window for all loads and transient
events,upto80A.ItwillalsoallowinstantaneousVID-on-the-ychangesofup
to500mVat80A.
4 VRM64usesavephasebucktopology.Eachphaseswitchesat
830kHz.Thisgivesanequivalentswitchingfrequencyof4.2MHz
5 Maximumcurrentrequiresadequateforcedairovertheconverter.Please
consultFigure1forthermalderating.
6 WhentheVRMdetectsanoutputover-voltageevent,theOVPpin
transitionstologichigh.Thissignalcanbeusedtoshutdownthesupplyto
theVRM,ordriveanexternalcrowbardevice.
7 Thesearedefaultsettings.Thecurrentlimitmaybesetto‘trip’or
‘hiccup’.Theoutputovervoltagelimits,inputovervoltageandundervoltage
settings,theoutputdroopandoffset,thecurrentlimitsetpointandmany
otherscanbechangedbycomponentchanges.Please consult the factory for
details.
8 0.01G2/Hzfrom5Hzto20Hz,maintaining0.02G2/Hzfrom20Hzto500Hz,
allaxes.
9 InaccordancewithAMDrequirements,PWRGDwillgohighatleast2msafter
VDDsettleswithinspecications.
10 The‘Y’sufxindicatesthatthesepartsareTSERoHS5/6(nonPb-free)
compliant.Pb-free(RoHS6/6)compliantversionsare“J”sufx.
11 NOTICE:Somemodelsdonotsupportalloptions.Pleasecontactyourlocal
EmersonNetworkPowerrepresentativeorusetheon-linemodelnumber
searchtoolathttp://www.PowerConversion.comtondasuitablealternative.
Signal Electrical Interface
Characteristic - Signal Name Symbol MIN TYP MAX UNITS NOTES AND CONDITIONS
ENABLE - on ENABLE (on) 1.7 5.5 V No pull up resistor provided by the VRM
ENABLE - off ENABLE (off) -0.3 0.8 V No pull up resistor provided by the VRM
PWRGD - high VPWRGD (high) 1.7 V No pull up resistor provided by the VRM
PWRGD - low VPWRGD (low) -0.3 0.8 V Open-collector output to not more than
5.5 V, max current 5 mA
PWRGD - low threshold 150 mV Below VID setting
PWRGD - turn-on response to
ENABLE going high Trise 2 2.5 10 ms For waveforms, refer to Application
Note 185
VID - high Vih (VID) 1.7 5.5 V
VID - low Vil (VID) -0.3 0.8 V
OVP1 (See Note 7) 2.2 V Default setting is trip. At OVP1 or OVP 2
whichever is smaller
OVP2 (See Note 7) 133 % Of VID Setting
OVP drive voltage CB_ OUT 4 V
SMBus Address high ADD_ x (high) 3.8 V
SMBus Address low ADD_ x (low) -0.3 0.7 V
SMBus Data high SMDA (high) 2.1 5.5 V
SMBus Data low SMDA (low) -0.3 0.8 V
Rev.11.21.12_64
VRM64 Series
4 of 7
Electromagnetic Compatibility
Characteristic - Signal Name Symbol MIN TYP MAX UNITS NOTES AND CONDITIONS
ESD - Indirect air 15 kV EN61000-4-2
In end user equipment
ESD - Indirect contact 8 kW EN61000-4-2
In end user equipment
Input characteristics
Input current - operating
IIN
12 A VIN = VIN (typ)
Iout (cont.) = 80 A, VID = 1.5 V
Input capacitance - external bypass CINext 1600 µF