EPS-LP-1k5
Spacecraft power control, distribution and protection system with up to 1500 W total power
EPS-LP is Dragonfly’s advanced 28V Electrical Power System designed for spacecraft power control and distribution. Now in its 8th generation, this system boasts heritage design that ensures exceptional reliability and performance, making it ideal for nano, micro, and mini satellites.
EPS-LP-1k5 Core Specifications
EPS-LP-1k5 Technical Specifications
Total Input, Output & Battery Power
1500 W
Output Ports
Unregulated unprotected power bus port & PDM ports as per configuration options
Bus Voltage
29.7 V (22 - 32 V)
Centralised (EPS Housing)
Configuration Options
SRM-S3R-18-LP: 1 - 4
PCU-28-50-LP (required): 1
PDM-LP-752: As required
PDM-REG: As required
PDM-HP-50: As required
Distributed Configuration Options
PDM-LP: As required
PDM-REG: As required
Communication Interfaces
CAN
Telemetry & Telecommands
DCL (Direct Command Line)
Telecommands
Operating Temperature
-10 °C to +50 °C
Dimensions
211 x 153 x 175 mm *
Mass
3.3 kg *
Design Life
Up to 8 years LEO
(20 kRad screening)
Functionality Highlights
- Spacecraft Power Cycle
- Watchdog Timer Function (1 hr to 72 hrs)
- Single fault tolerance
- Battery Under Voltage Protection (Hibernation)
- Battery Charge Current Limiting
Solar Regulator Module (SRM)
Topology
S3R
(Sequential Switching Shunt Regulator)
1 x SRM Total Input Power
535 W at 29.7 V (18 A max)
All Distribution Channels
Channel Protection
(with overrides)
Over current
Over load
External Trip Input
Channel Functions
Watchdog timer
Auto-retry
Redundancy
Dual Redundant
PDM-LP-752 (Power Distribution Module - Low Power)
Output Voltage (unregulated)
29.7 V (22 - 32 V)
Total Output Power
600 W
No. of Output Channels
8
Channel Configuration
1x 7 A
2x 5 A
5x 2 A
PDM-HP-50 (Power Distribution Module - High Power)
Output Voltage (unregulated)
29.7 V (22 - 32 V)
Total Output Power
1500 W
No. of Output Channels
2
Channel Configuration
2x 50 A
PDM-REG (Power Distribution Module - Regulated)
Output Voltage
5 V regulated
Total Output Power
60 W
No. of Output Channels
8
Channel Configuration
2x 5 A
6x 2 A
