Compact GaN-FET EPS for up to 3UXL CubeSats in 3 variants, with MPPT, battery heating, and 22.5–45 Wh energy storage.
Compact Electrical Power System 2
Compact GaN-FET EPS for up to 3UXL CubeSats in 3 variants, with MPPT, battery heating, and 22.5–45 Wh energy storage.
Description
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.
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 |
