IBM C1B 1.12 Brick On Sled Carrier 128-pin HPC, SSA manual CxB Models, Power supply methods

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U S E R RESPONSIBLE F O R V E R I F Y I N G VERSION A N D COMPLETENESS

O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H

2.2.4 CxB Models

The carrier models include a D C / D C power converter, device activity and fault/service indicators. There is no additional current required for + 5 V or + 1 2 V .

2.2.4.1 Power supply methods

When + 3 8 V is applied to the interface connector pins + 3 8 V Source A, + 3 8 V Source B, and Ground, the + 38V supply is input to a D C / D C converter that provides + 1 2 V and + 5 V to the drive electronics.

2.2.4.2 DC/DC Converter

Typical efficiency of this converter is 80% at maximum output load with input voltage at 38V.

There are two independent + 3 8 V power supply inputs on the interface connector which supply two inde- pendent inputs to the D C / D C converter, + 3 8 V Source A and + 3 8 V Source B (refer to Table 12 on page 65). The D C / D C converter will operate while one input voltage is in the range of + 3 4 V to + 4 0 V and

the other input voltage is in the range of 0 to + 4 0

volts. Input voltage ripple must be less than 1.0 volts

peak-to-peak at

the fundamental frequency of 420 Hz maximum, less than 500mv at the frequency from

421hz to 1 khz,

less than 100mv at the frequency greater than 1 khz. The converter output is + 5 volts at

0.3 amps to 2.6

amps and + 1 2 volts at 0.3 amps

to 1.4 amps continuous current. The + 1 2 v output can

handle a surge current of 2.2 amps in 9 seconds.

The total input current to the converter is 1.6A amps when the highest input voltage on the power supply input pins is + 3 4 volts and the converter outputs are operating at full load. The input current ripple, due to converter switching is no more than 100 milliamps peak-to-peak at 1 M H z Maximum inrush current is limited to 3 amps during turn on except for a maximum period of 2 microseconds (during hot plugging) where the current can exceed 3 amps but is less than 8 amps.

AD C / D C converter output enable is provided on the interface connector. This signal, + D C / D C Enable, is pulled up within the converter. T o enable the D C outputs, this line must be at or above 2.4 volts. T o disable the D C outputs, the signal must be at or below 1.4 volts.

The D C / D C converter has over-current, over-voltage, and over-temperature detection. Any of these condi- tions will latch off the converter. The latch is reset by insuring that both input voltages fall below + 5 volts for a period greater than or equal to 10 milliseconds.

Refer to 5.5, “Option Pins and Indicators” onpage 66 for descriptions of the Early Power Off Warning and Loss of Redundancy fault signals associated with the + 3 8 V supply inputs.

Source filename=POWER

I B M Corporation

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Contents Form Factor Disk Drive Version BM Corporation Preface Source filename=STSSHEXT When Operating Limits ReliabilityContaminants Acoustic Levels Source filename=STSSHEXT General Features FeaturesInterface Controller Features DescriptionModels Reliability FeaturesGeneral SpecificationsSectors/logical block sct/lba User bytes/sector ub/sctUser bytes/logical block ub/lba Sectors/track sct/trkFor Each Notch Capacity EquationsFor Entire Drive 1 C1x Models Power Requirements by ModelInput Voltage + 5 Volts Supply + 1 2 Volts SupplyPower Calculation Examples Example 3. Power CalculationExample 1. Calculate the mean 12 volt average current Example 4. Calculate the 12 volt peak current Things to check when measuring 12 V supply currentVolt current during read/write operations C1x Models Typical 12 volt current C1x Models Typical 12 volt spin-up current C1x Models 2 C2x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C2x Models Typical 12 volt current C2x Models Typical 12 volt spin-up current C2x Models 3 C4x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C4x Models Typical 12 volt current C4x Models Typical 12 volt spin-up current C4x Models Power supply methods CxB Models4.2 DC/DC Converter Hot plug/unplug support Grounding Requirements of the Disk EnclosureM Corporation Event Nominal Maximum Bring-up Sequence and Stop TimesBring-up Sequence Times and Stop Time for C2x Models Source filename=PERFORM Environment Definition PerformanceWorkload Definition # of segments Ub/lba +Sequential Command Execution TimeRandom Basic Component DescriptionsData Transfer to/from Disk Data Transfer to/from SSA Link CommentsTheoretical Data Sector Transfer Rate Approximating Performance for Different EnvironmentsWhen Write Caching is Enabled When Read Caching is EnabledWhen Adaptive Caching is Enabled When Read-ahead is EnabledFor Queued Commands When No Seek is RequiredReordered Commands Back-To-Back CommandsSkew Cylinder to Cylinder SkewTrack to Track Skew Idle Time Functions Servo Bias Measurements Servo Run Out MeasurementsPredictive Failure Analysis Channel CalibrationCommand Timeout Limits Save Logs and PointersDisk Sweep M Corporation Mechanical Weight and DimensionsSmall Form Factor Models CxC ClearancesDimensions are in millimeters Location of Side Mounting Holes of C4C Models Source filename=MECHANIC Unitized Connector Locations Source filename=MECHANIC Carrier Models CxB Dimensions CxB Models M Corporation Handle Docking and Ejection System Auto-docking Assembly Side Rails Side Rail Positioning E D Locations front view CxB Models M Corporation Electrical Connector and Indicator LocationsElectrical Interface SSA Unitized ConnectorPin Carrier ConnectorRow SSA Link Electrical Characteristics Option Pins and IndicatorsSSA Link Cable Device Fault Pin/Indicator Option Port Pin Device Activity Pin/Indicator Option Port PinWrite Protect Option Port Pin Ground long Option Port PinEarly Power Off Warning or Power Fail Power Port Pin Front Jumper Connector12 12V Charge and 5V Charge Power Port pin 1 Programmable pin 1 Option Port PinSpindle Synchronization Over Sync Hard-wire M Corporation Source filename=RELIABLE Seek Error Rate Error DetectionPower On Hours Examples ReliabilityUseful Life Power on/off cyclesMaximum on/off cycles Product LifeMean Time Between Failure *MTBF Install Defect FreeSpql Shipped product quality level Sample Failure Rate ProjectionsConnector Insertion Cycles Periodic MaintenanceInstall Defect Free percentage Percent ESD ProtectionOperating Limits Temperature Measurement PointsP F E T Maximum ReliabilityVibration and Shock Temperature Measurement Points for all Models bottom viewDrive Mounting Guidelines Output Vibration LimitsOperating Vibration V4S Nonoperating VibrationContaminants Operating ShockNonoperating Shock Acoustic Levels Upper Limit Sound Power Requirements Bels for C4x ModelsSource filename=STANDARD Safety StandardsElectromagnetic Compatibility EMC M Corporation Serial Storage Architecture S S a P H Transport Bibliography
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