Data Sheet: FReta iEB Series –Single Output Eighth Brick Bus Converter

Thermal Management:

Animportantpartoftheoverallsystem designprocessisthermalmanagement; thermaldesignmustbeconsideredatall levelstoensuregoodreliabilityandlifetime ofthefinalsystem.Superiorthermaldesign andtheabilitytooperateinsevere applicationenvironmentsarekeyelements ofarobust,reliablepowermodule.

Afiniteamountofheatmustbedissipated fromthepowermoduletothesurrounding environment.Thisheatistransferredbythe threemodesofheattransfer:convection, conductionandradiation.Whileallthree modesofheattransferarepresentinevery application,convectionisthedominantmode ofheattransferinmostapplications. However,toensureadequatecoolingand properoperation,allthreemodesshouldbe consideredinafinalsystemconfiguration.

Theopenframedesignofthepowermodule providesanairpathtoindividual components.Thisairpathimproves convectioncoolingtothesurrounding environment,whichreducesareasofheat concentrationandresultinghotspots.

Test Setup:Thethermalperformancedata ofthepowermoduleisbasedupon measurementsobtainedfromawindtunnel testwiththesetupshowninthewindtunnel figure.Thisthermaltestsetupreplicatesthe typicalthermalenvironmentsencounteredin mostmodernelectronicsystemswith distributedpowerarchitectures.The electronicequipmentinnetworking,telecom, wireless,andadvancedcomputersystems operatesinsimilarenvironmentsandutilizes verticallymountedPCBsorcircuitcardsin cabinetracks.

Thepowermodule,asshowninthefigure,is

mountedonaprintedcircuitboard(PCB) andisverticallyorientedwithinthewind tunnel.Thecrosssectionoftheairflow passageisrectangular.Thespacing betweenthetopofthemoduleandaparallel facingPCBiskeptataconstant(0.5in). Thepowermodule’sorientationwithrespect

totheairflowdirectioncanhaveasignificant impactonthemodule’sthermal performance.

Thermal Derating:Forproperapplicationof thepowermoduleinagiventhermal environment,outputcurrentderatingcurves areprovidedasadesign

AdjacentPCB

Module

Centerline

A

 

12.7

I

(0.50)

R

 

 

F

 

 

L

 

 

O

 

 

W

 

 

 

 

 

76(3.0)

AIRFLOW

AirVelocityandAmbient

TemperatureAirPassage

MeasurementLocation Centerline

Wind Tunnel Test Setup Figure Dimensionsare

inmillimetersand(inches).

guidelineontheThermalPerformance sectionforthepowermoduleofinterest. Themoduletemperatureshouldbe measuredinthefinalsystemconfigurationto ensureproperthermalmanagementofthe powermodule.Forthermalperformance verification,themoduletemperatureshould bemeasuredatthecomponentindicatedin thethermalmeasurementlocationfigureon thethermalperformancepageforthepower moduleofinterest.Inallconditions,the powermoduleshouldbeoperatedbelowthe maximumoperatingtemperatureshownon thederatingcurve.Forimproveddesign marginsandenhancedsystemreliability,the powermodulemaybeoperatedat temperaturesbelowthemaximumrated operatingtemperature.

©20042006TDKInnovetaInc.

(877)498 0099

1/24/2008

10/13

 

 

 

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TDK FReta Series manual Thermal Management

FReta Series specifications

The TDK FReta Series represents a cutting-edge advancement in energy storage technology, designed to meet the diverse needs of various industries and applications. As a leading manufacturer in electronic components, TDK has focused on delivering high-performance solutions to address contemporary energy challenges, and the FReta Series is a testament to that commitment.

One of the main features of the FReta Series is its exceptional energy density. This allows for smaller and lighter energy storage systems without compromising performance. The advanced chemistry used in the FReta capacitors enables them to store more energy per unit volume, making them an ideal choice for applications ranging from portable devices to electric vehicles.

Another key characteristic of the FReta Series is its outstanding charge and discharge capabilities. This series is engineered to handle rapid charge cycles with minimal degradation, enhancing the longevity and reliability of the devices it powers. This feature is particularly beneficial for applications that require quick bursts of energy, such as regenerative braking systems in electric vehicles or peak load shifting in energy management systems.

In terms of technology, TDK has incorporated advanced materials and manufacturing processes in the FReta Series. The use of high-performance dielectric materials improves insulation and increases the operational voltage, while meticulous quality control during production ensures consistency and reliability across the series. The FReta capacitors are also designed to withstand extreme temperatures, making them suitable for use in harsh environments.

Furthermore, the FReta Series boasts an impressive lifespan, often outlasting traditional energy storage solutions. The robust construction and low self-discharge rates contribute to its reliability, enabling it to maintain performance over extended periods with minimal maintenance. This longevity is a significant advantage for industries where downtime is costly.

In summary, the TDK FReta Series offers a combination of high energy density, rapid charge/discharge capabilities, advanced manufacturing technology, and an extended lifespan. These features make it an attractive option for various applications, including consumer electronics, automotive, and industrial equipment. As energy demands continue to evolve, the TDK FReta Series is poised to play a crucial role in the development of efficient and sustainable energy solutions.