Note
Go to the end to download the full example code.
HFSS 3D Layout: SIwave DCIR analysis in HFSS 3D Layout#
This example shows how you can use configure HFSS 3D Layout for SIwave DCIR analysis.
import os
import tempfile
import pyaedt
Set AEDT version#
Set AEDT version.
aedt_version = "2024.1"
Configure EDB for DCIR analysis#
Copy example into temporary folder
temp_dir = tempfile.gettempdir()
dst_dir = os.path.join(temp_dir, pyaedt.generate_unique_name("pyaedt_dcir"))
os.mkdir(dst_dir)
local_path = pyaedt.downloads.download_aedb(dst_dir)
Load example board into EDB
appedb = pyaedt.Edb(local_path, edbversion=aedt_version)
Create pin group on VRM positive pins
gnd_name = "GND"
appedb.siwave.create_pin_group_on_net(
reference_designator="U3A1",
net_name="BST_V3P3_S5",
group_name="U3A1-BST_V3P3_S5")
('U3A1-BST_V3P3_S5', <pyedb.dotnet.edb_core.edb_data.sources.PinGroup object at 0x0000022638C953F0>)
Create pin group on VRM negative pins
appedb.siwave.create_pin_group_on_net(
reference_designator="U3A1",
net_name="GND",
group_name="U3A1-GND")
('U3A1-GND', <pyedb.dotnet.edb_core.edb_data.sources.PinGroup object at 0x0000022638C95C00>)
Create voltage source between VRM positive and negative pin groups
appedb.siwave.create_voltage_source_on_pin_group(
pos_pin_group_name="U3A1-BST_V3P3_S5",
neg_pin_group_name="U3A1-GND",
magnitude=3.3,
name="U3A1-BST_V3P3_S5"
)
True
Create pin group on sink component positive pins
appedb.siwave.create_pin_group_on_net(
reference_designator="U2A5",
net_name="V3P3_S5",
group_name="U2A5-V3P3_S5")
('U2A5-V3P3_S5', <pyedb.dotnet.edb_core.edb_data.sources.PinGroup object at 0x0000022638C940D0>)
Create pin group on sink component negative pins
appedb.siwave.create_pin_group_on_net(
reference_designator="U2A5",
net_name="GND",
group_name="U2A5-GND")
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Create place current source between sink component positive and negative pin groups
appedb.siwave.create_current_source_on_pin_group(
pos_pin_group_name="U2A5-V3P3_S5",
neg_pin_group_name="U2A5-GND",
magnitude=1,
name="U2A5-V3P3_S5"
)
True
Add SIwave DCIR analysis
appedb.siwave.add_siwave_dc_analysis(name="my_setup")
<pyedb.dotnet.edb_core.edb_data.siwave_simulation_setup_data.SiwaveDCSimulationSetup object at 0x0000022638C948E0>
Save and close EDB#
Save and close EDB.
appedb.save_edb()
appedb.close_edb()
True
Analysis DCIR in AEDT#
Launch AEDT and import the configured EDB and analysis DCIR
desktop = pyaedt.Desktop(aedt_version, non_graphical=False, new_desktop_session=True)
hfss3dl = pyaedt.Hfss3dLayout(local_path)
hfss3dl.analyze()
hfss3dl.save_project()
True
Get element data#
Get current source
current_source = hfss3dl.get_dcir_element_data_current_source(setup="my_setup")
print(current_source)
# ~~~~~~~~~~~~~~~~~~~
# Get via information
via = hfss3dl.get_dcir_element_data_via(setup="my_setup")
print(via)
Voltage
U2A5-V3P3_S5 3.294553
X
J1-6<BOTTOM,TOP> 0.003632
J1A6-3<BOTTOM,TOP> 0.034595
J1B2-2<BOTTOM,GND> 0.007493
J1B2-2<GND,TOP> 0.007493
J2A1-4<BOTTOM,TOP> 0.026975
... ...
via_4873<GND,TOP> 0.056947
via_4874<BOTTOM,GND> 0.086106
via_4874<GND,TOP> 0.086106
via_4875<BOTTOM,GND> 0.082550
via_4875<GND,TOP> 0.082550
[883 rows x 1 columns]
Get voltage#
Get voltage from dcir solution data
voltage = hfss3dl.get_dcir_solution_data(setup="my_setup", show="Sources", category="Voltage")
print({expression: voltage.data_magnitude(expression) for expression in voltage.expressions})
{'SeriesRV(U3A1-BST_V3P3_S5)': [1.000632290113], 'V(U2A5-V3P3_S5)': [3294.553400696]}
Close AEDT#
desktop.release_desktop()
True
Total running time of the script: (2 minutes 27.214 seconds)