Electrical Power System
Dragonfly Aerospace
Dragonfly’s advanced 28V Electrical Power System designed for spacecraft power control and distribution, now in its 8th generation with heritage design for exceptional reliability and performance.
Typed specifications65 values
Discloses 9 of 14 fields engineers filter by in this category (category median 7).
- Mass
- 3 300 g datasheet p.1 3 300 g 1x SRM-S3R-18-LP & 3x PDM-LP-752 configuration
- Total output power
- 1 500 W PDM-HP-50 module total output power · datasheet p.1 600 W PDM-LP-752 module total output power | 60 W PDM-REG module total output power | 1 500 W Total Input, Output & Battery Power
- Envelope (L×W×H)
- 211 x 153 x 175 mm datasheet p.1 211 x 153 x 175 mm 1x SRM-S3R-18-LP & 3x PDM-LP-752 configuration
- Outputs (as printed)
- Unregulated unprotected power bus port & PDM ports as per configuration options datasheet p.1
- Supply voltage
- 29.7 V nom. · datasheet p.1 22 V min | 32 V max | 22–32 V Centralised (EPS Housing)
- Power consumption
- 1 500 W product page 600 W | 1 500 W
- Data interface
- CAN datasheet p.1
- Operating temperature
- -10 °C min · datasheet p.1 50 °C max | -10–50 °C
- Radiation tolerance (TID)
- 20 krad datasheet p.1 20 krad screening
- Design lifetime
- 8 years LEO · datasheet p.1 8 years max · LEO
- TRL
- 9 datasheet p.1
- Export status
- ITAR-free datasheet p.1
- Unit type
- PCDU spacecraft power control, distribution and protection system · datasheet p.1
- Bus and outputs type
- hybrid (regulated rails + battery bus) unregulated 29.7 V bus + PDM-REG 5 V regulated · datasheet p.1
- Unregulated (battery) bus voltage
- 29.7 V nom. · bus voltage · datasheet p.1 29.7 V Centralised (EPS Housing) | 29.7 V unregulated | 22–32 V bus voltage
- Regulated output voltages
- 5 V PDM-REG regulated output · datasheet p.1
- Switchable outputs
- 2 PDM-HP-50 output channels · datasheet p.1 8 PDM-LP-752 output channels | 8 PDM-REG output channels
- Solar input voltage window
- 22 V min · datasheet p.1 32 V max
- Max solar input power
- 535 W 1 x SRM total input power at 29.7 V · datasheet p.1
- Solar array regulation
- S3R (sequential switching shunt) SRM topology: S3R (Sequential Switching Shunt Regulator) · datasheet p.1
- Protections
- Over current datasheet p.1 under-voltage lockout battery under voltage protection (hibernation) | over-current (LCL) over current, all distribution channels | other over load | watchdog watchdog timer function (1 hr to 72 hrs) +3
- Flight heritage
- TRL 9 datasheet p.1
- Max current per output
- 50 A PDM-HP-50, 2 channels · datasheet p.1 50 A PDM-HP-50, 2x 50 A channels | 7 A PDM-LP-752, 1 channel | 7 A PDM-LP-752, 1x 7 A channel | 5 A PDM-LP-752, 2 channels +7
- MPPT
- no datasheet p.1
- Max solar input current
- 18 A max · 1 x SRM · datasheet p.1
- Housekeeping telemetry
- Telemetry & Telecommands over CAN datasheet p.1
- Redundancy
- other Dual Redundant; single fault tolerance · datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier12 lines, in the manufacturer's own wording
- Total input, output & battery power
- 1500 W
- Supply voltage
- 29.7 V (22 - 32 V)
- 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)
- Srm total input power
- 535 W at 29.7 V (18 A max)
- Pdm-lp-752 total output power
- 600 W
- Pdm-lp-752 no. of output channels
- 8
- Pdm-hp-50 total output power
- 1500 W
- Pdm-hp-50 no. of output channels
- 2
About
The EPS-LP-1k5 is Dragonfly’s advanced 28V Electrical Power System, specifically designed for spacecraft power control and distribution. This system, now in its 8th generation, boasts a heritage design that ensures exceptional reliability and performance, making it an ideal solution for nano, micro, and mini satellites. It offers up to 1500 W total power and features a centralized configuration within the EPS Housing. Key functionalities include a Spacecraft Power Cycle Watchdog Timer Function (1 hr to 72 hrs), single fault tolerance, Battery Under Voltage Protection (Hibernation), and Battery Charge Current Limiting. The system also incorporates a Solar Regulator Module (SRM) with S3R (Sequential Switching Shunt Regulator) topology, providing 535 W total input power at 29.7 V. Distribution channels are protected with overcurrent, overload, and external trip input, along with watchdog timers and auto-retry redundancy. The EPS-LP-1k5 is ITAR-Free and has a TRL 9 rating.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.