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FloTHERM Version 8 Highlights
Data Interoperability
PCB metallic distribution modeling in FloEDA.Bridge
[Windows only]
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Imported ‘.floeda’ data will contain detailed high resolution image descriptions of the distribution of metal on each
metallic layer as well as a description of the distribution of through hole vias passing through dielectric layers.
These images can be processed into a collection of layer patches with automatically derived effective thermal conductivities
for each patch.
If ‘.floeda’ data is not available then a monochrome image representing the distribution of metal on a layer can be
manually attached to a layer in FloEDA.Bridge and subsequently processed into layer patches.
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Direct EDA interfaces with FloEDA.Bridge [Windows only]
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Direct interfaces to the following EDA tools are provided:
- Boardstation® from Mentor Graphics Corporation Inc
- Allegro® from Cadence Design System Inc
- CR5000 Board Designer® from Zuken
The interfaces do not require a license to operate. The interfaces enable the generation of ‘.floeda’ data for subsequent
import into FloEDA.Bridge. Such data contains more information than equivalent IDF, e.g. layer stack-up, power property, metallic
distribution in metallic and dielectric layers
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New FloEDA.Bridge Application Window [Windows only]
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A new application window called FloEDA.Bridge can be launched from the Project Manager. FloEDA.Bridge allows for import of EDA (PCB) data
in IDF and ‘.floeda’ format as well as the manual modification or definition of PCB layouts.
Additional objects can also be defined such as:
- Layer stack up
- Layer patches of differing %Cu
- EM Cans
- Heatsinks
- Daughterboards
- Potting compound
- Board cutouts
- Vias
- Component placement keepout regions
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Modeling
Die SmartPart
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A new SmartPart representing a die and the heat dissipation distribution across it is available.
Three options allow for either a uniform, discrete or total coverage tessellated distribution of power across the die surface:
Non-uniform dissipation definitions can be specified manually or automatically by .csv file import
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Thermoelectric Cooler (TEC) SmartPart
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A new SmartPart representing thermoelectric coolers is available.
It is characterized by data readily available from TEC suppliers. Its operating current is available as an
input parameter in the Command Center.
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Fan RPM Derating
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A derating factor controls the derating of a Fan SmartPart RPM (operating RPM / defined RPM). A default value of 1.0
(no derating) can either be decreased or increased to modify the linear or non-linear fan curve based on the ‘fan laws’.
It will linearly modify a fixed volume flow definition.
The RPM derating factor is also available as an input variable in the Command Center.
Fan power is also derated by RPM Derating Factor3, the derated value is shown in the Fan construction dialog
as well as being available as an output variable in command Center.
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Fan Noise
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A fan noise dB value can now be defined in the Fan SmartPart construction dialog. The dB value will derated according
to the following relationship:
dBderated = dB + 50 log10 RPM Derating Factor
The dB noise value has no effect on the flow or heat transfer solution, it serves only to indicate the relationship
between rpm derating and the resulting noise level. It is also available as an output variable in the Command Center.
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‘Zoom-In’ model creation
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A Region object can be selected in a solved system level model and a new project created, having the same size of the region
and carrying over all objects within the region. Boundary conditions are imposed for each cell face on the region.
The geometry in the zoom in model can be refined and a more detailed study conducted without having to carry the
overhead of the full system level model.
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Results Post-Processing
MS Excel launched and populated with tabular data from the Visual Editor [Windows only]
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A range of cells can be selected in the Visual Editor tables display and MS Excel launched with the selected data automatically pasted.
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Tables Window reimplemented into the Visual Editor
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The Tables window has been removed and incorporated into the Visual Editor to produce a single post-processing application window.
The display can be toggled between full 3D, full tabular and vertical or horizontal split combinations.
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Usability
Multiple apply to multiply selected similar objects
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When multiple objects of the same type are selected, a change can be applied to all objects in a single click. This is done by first
the objects than popping up their location or construction dialogs. Then make the required change, e.g. location, size, collapsed etc.
Then right mouse click over that dialog item and select ‘Apply to All’.
Note that if two or more changes are to be applied then they should be done one at a time.
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