Compact Electrical Power System 2
ISISPACE Group
Compact GaN-FET EPS for up to 3UXL CubeSats in 3 variants, with MPPT, battery heating, and 22.5–45 Wh energy storage.
Technical specifications
- Mass — Type A
- 184 ± 5 g
- Mass — Type B
- 310 ± 5 g
- Mass — Type C
- 360 ± 5 g
- Volume — Type A
- 96 x 92 x 26.45 mm (PCB and top battery)
- Volume — Type B
- 96 x 92 x 11.34 mm (PCB only)
- Operating Temperature Range
- -20°C to +70°C
- Energy Storage — Type A
- 22.5 Wh
- Energy Storage — Type B/C
- 45 Wh
- Output Voltage Domains
- VD0: Unregulated (1 ch); VD1: 5V (4 ch); VD2: 3.3V (4 ch)
- Main Bus Organisation
- Unregulated Bus
- MPPT Channels
- 3 independent channels
- Interface
- CSKB compatible
- Communication Interface
- I²C
- Protection Features
- Emergency Low Power Mode, Hardware Supervisor with Watchdog, overcurrent/thermal limits per channel
About
The ISISPACE Compact Electrical Power System (ICEPS2) is ideal for up to 3UXL CubeSats. It features GaN-FETs for efficient solar power conversion, Maximum Power Point Tracking (MPPT), and integrated battery heating. ICEPS2 is available in three variants ensuring customised mission performance with reliable off-the-shelf efficiency.
Type A is the most compact variant (26.45 mm height, 22.5 Wh storage), while Types B and C provide 45 Wh storage with different PCB configurations. All variants feature 3 independent MPPT channels and are compatible with the CSKB (CubeSat Kit Bus) interface.
The system includes multiple voltage output domains: unregulated bus (VD0, 1 channel), 5V (VD1, 4 channels), and 3.3V (VD2, 4 channels). Protection features include Emergency Low Power Mode, hardware supervisor with watchdog, and overcurrent/thermal limits on all output channels. Communication via I²C.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
