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After adding the inductors, L6 DC-DC converters functional but SCuM disconnected. We thought that heating the board to the point that the inductor pad solder melted might have loosened the SCuM Quik-Pak and a very small movement might have disconnected it.
When tested with 1.8 V 2/11/22:
300 uA on VBAT
2.2 mA on VDDD
0.4 uA on VDDIO
After adding the inductors, L7 functionality did not change. It could still easily be programmed, but DC-DC converters were still disconnected. Due to L6 issues, we decided not to retry soldering on inductors.
When tested with 1.8 V 2/11/22:
18 mA on VBAT
48.
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5 mA on VDDD
2.3 uA on VDDIO
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L8/L9/L10:
Sulu V1 boards
Pin headers soldered on by Austin.
All 3 boards did not draw current when connected to VBAT.
Due to last minute changes with which inductors were used, Digicom initially placed the old inductors and later swapped them out for the correct ones. Digicom said they looked at the board under and xray machine and the connections looked ok.
Deformations in L8
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When tested with 1.8 V 2/11/22:
0 uA on VBAT
0 uA on VDDD
0 uA on VDDIO
L10
When tested with 1.8 V 2/11/22:
0 uA on VBAT
0 uA on VDDD
0 uA on VDDIO
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L14/L15/L16:
Sulu V2 boards
L15 had noticeable epoxy deformation on Quik-Pak SCuM.
When tested with 1.8 V 2/11/22:
425 uA on VBAT
0 uA on VDDD
0 uA on VDDIO
Pin headers soldered on by Digicom
L14 and L16 did not draw current when connected to VBAT. L15 did draw expected current when connected to VBAT, but did not draw current when connected to VDDD.
All 3 SCuM were confirmed 5 days earlier to successfully program with 3WB using the probe station.
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Sulu V2 boards
L19 had noticeable epoxy deformation on Quik-Pak SCuM.
L17 had a noticeable crack in the epoxy.
Pin headers soldered on by Digicom
No current drawn from either board from any location.
Both SCuM were confirmed 1 day earlier to successfully program with 3WB using the probe station.
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Digicom Assembly Steps:
Clean board and bake it to get rid of moisture
Print solder paste onto board
Use a machine to place smd components
SCuM placed by hand
Use oven to reflow.
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Use no clean solder so there is no need to clean it again
Check if the board needs to be touched up