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USM-0007
User Manual: 25-00221 - 2x8W Buck, 1x3W SEPIC
EPS 2G (3U)
Issue: B
Date: 25/09/2014
Helix Building, WSSP,
Glasgow G20 0SP, UK
Page: 2 of 47
Document Control
Issue
Date
Section
Description of Change
Reason for Change
14/02/2011
All Sections
First Draft
N/A
Section 8.2
Update to connector part
number
for
Array
connector on EPS
Incorrect part number
specified in Rev A of
document.
Table 11-3
Update to
equations
telemetries
Rev B of this document
reflects current build level of
product (Rev C)
Product
Part Number
Revisions covered
Notes
Cubesat 3U Electronic Power
System
25-00221
C
2x16V/8W, 5V/3W BCR
A
B
25/09/2014
theoretical
for
all
Revision Control
Acronyms and Abbreviations
BCR
Battery Charge Regulator
PCM
Power Conditioning Module
PDM
Power Distribution Module
MPPT
Maximum Power Point Tracker
USB
Universal Serial Bus
ESD
Electro Static Discharge
TLM
Telemetry
EPS
Electrical Power System
EoC
End of Charge
AMUX
Analogue Multiplexer
ADC
Analogue to Digital Converter
AIT
Assembly, Integration and Testing
1U
1 Unit (Cubesat standard size)
3U
3 Unit (Cubesat standard size)
FleXU/XU
FleXible Unit (suitable for various satellite configurations)
rh
Relative Humidity
Wh
Watt Hour
Ah
Ampere Hour
DoD
-1
Kbits
Depth of Discharge
Kilobits per second
Voc
Open Circuit Voltage
Isc
Short Circuit Current
2s1p
Battery configuration – 2 cells in series, 1 battery in parallel (single string)
2s2p
Battery configuration – 2 cells in series, 2 batteries in parallel
2s3p
Battery configuration – 2 cells in series, 3 batteries in parallel
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