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EPS Scales RevB

BroncoSpace-Lab·scales-hardware·power_system/EPS/EPS_Scales_RevB/EPS_Scales_RevB.kicad_pcb

EPS Scales RevB

About the EPS Scales RevB PCB

EPS Scales RevB is an open source PCB design by BroncoSpace-Lab, published on GitHub. It is a 2-layer board, with 157 components from 51 distinct parts.

Other key parts include the LT8638SEV#PBF, TLV1704AQPWRQ1, ltc4365hts81#pbf, LTC6902 and INA230AIRGTR. By type, the board carries 69 resistors, 50 capacitors, 15 ICs, 6 diodes, 5 connectors and 4 transistors.

It belongs with the sensors designs in this gallery.

From the project

Hardware design files for the Spacecraft Compartmentalized Autonomous Learning and Edge Computing System (SCALES)

This is the third board of the SCALES EPS. It is based on the RevF schematic which yields the Viking 1-C Board. This board improves on the success of the 1-B board and implements some minor improvements that prevented the Peripheral and Jetson subsystem from activating correctly.

List of Changes in Viking 1-C After Production Errors in Viking 1-B

- Removed R48 - Removed R83 - The above mentioned resistors caused too low of a voltage to fully enable the En pins on the load switches, and by simply removing them we can successfully drive the load switches on using GPIO pins. - Added 3 MCP9808…

Main components on the EPS Scales RevB

LT8638SEV#PBFTLV1704AQPWRQ1ltc4365hts81#pbfLTC6902INA230AIRGTR

EPS Scales RevB bill of materials (BOM)

157 components, 51 distinct parts.

QtyPartRefs
4
LT8638SEV#PBF
IC1, IC2, IC3, IC4
2
TLV1704AQPWRQ1
TLV1704
U2, U3
4
ltc4365hts81#pbf
LTC4365HTS8-1_TRPBF
U4, U5, U6, U7
1
LTC6902
U8
4
INA230AIRGTR
U9, U10, U11, U12
4
SISB46DN-T1-GE3
Q1, Q2, Q3, Q4
1
Input Power
J1
2
Breakout
J4, J6
2
Breakout
J5, J7
4
SolderJumper_2_Open
JP3, JP4, JP5, JP6
4
1N4151WS-E3-08
1N4151WS
D4, D6, D7, D9
2
150060GS75000
GREEN
D5, D8
1
10.4uH
L1
1
6.4uH
L2
2
3uH
L3, L4
3
25nF
C1, C2, C3
1
10nF
C4
3
10uF
C5, C6, C7
2
100nF
C8, C44
6
TCN4227M025R0100
220u
C9, C10, C11, C17, C18, C19
Show 31 more
QtyPartRefs
10
GRT188R61C106KE13D
10u
C12, C13, C14, C15, C16, C20, C21, C22 +2
4
4.7uF
C25, C33, C38, C49
4
C
C26, C30, C35, C46
4
1uF
C27, C31, C36, C47
5
0.1uF
C28, C32, C37, C48, C53
4
1nF
C29, C34, C39, C50
4
100uF
C40, C41, C42, C43
2
2.1M
R1, R64
3
100k
R2, R56, R65
2
200k
R3, R66
2
ESR18EZPF10R0
10 (1206)
R19, R37
10
RMCF0603FT10K0
10k
R20, R21, R22, R26, R27, R38, R39, R40 +2
6
RMCF0603FT3K00
3.0k
R23, R24, R25, R41, R42, R43
4
RMCF0603FT1K00
1k
R28, R30, R46, R48
12
RMCF0603FT100K
100k
R29, R31, R32, R33, R35, R36, R47, R49 +4
2
RMCF0603FT4M70
4.7M
R34, R52
4
10k
R55, R61, R80, R84
3
3k
R57, R79, R83
1
95k
R58
4
105K
R59, R62, R81, R85
1
5k
R60
2
22k
R63, R82
1
6.3M
R67
1
50k
R68
1
250k
R69
1
10.5M
R70
1
40k
R71
1
260k
R72
1
12.5m
R91
1
12.5k
R92
3
33m
R93, R94, R95

EPS Scales RevB design files

The KiCad project lives in the BroncoSpace-Lab/scales-hardware repository on GitHub; these links point at the commit this page was built from.

EPS Scales RevB: common questions

How big is the EPS Scales RevB PCB?

The EPS Scales RevB has 2 copper layers and is 1.6 mm thick.

How many components are on the EPS Scales RevB?

157 components, from 51 distinct parts. The full bill of materials is listed on this page.

Where can I download the EPS Scales RevB design files?

From the BroncoSpace-Lab/scales-hardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the EPS Scales RevB design in my own project?

The repository has no license, so all rights stay with BroncoSpace-Lab. Use it as a reference, and ask the author before reusing the design.

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