ISIS Modular Electrical Power System

Flight heritage since 2020

ISIS Modular Electrical Power System

Price on request

  • Modular solution – multiple PC104 form factor board, ideal for 3U platforms and up
  • Communication over two independent I2C or UART interfaces, SPI optional
  • FRAM-based MCUs for improved radiation tolerance
  • Hardware over-current protection and hardware-based maximum power point tracking
  • Hardware Supervisor including Watchdog
  • Solar Panel interface utilizes GaN-FETs
  • Output load channels:
    • Buck regulated power channels
    • Over-current and reverse-current protection in hardware
    • Over-voltage protection through TVS diodes
    • Turn on voltage ramp control (soft start)
    • Software configurable auto enable and latch-off retry enable timings
    • Accurate voltage, current and power sensing on each channel
  • Rich housekeeping telemetry available
  • Very low idle consumption when no enabled output channels
Sold By : ISISPACE SKU: N/A Category:


The ISIS Modular Electrical Power Subsystem version 2 (v2) is the second-generation modular EPS designed and manufactured by ISIS. IMEPSv2 is designed as a flexible EPS targeting larger nano-satellites and microsatellites from 3U upwards. Using recent high-performance technology, the EPS provides improved efficiency over the previous version while minimizing EMI. The modular architecture allows the EPS to be tailored to the needs of the platform without needing customization. The distributed design philosophy that underpins the IMEPS design allows unprecedented flexibility in output bus count and voltage, and enables tailorable redundancy to be applied for selectable parts of the platform, depending on the needs of the mission.

The IMEPS consists of four types of elements:

  • ISIS Power Conditioning Unit (IPCU) – Solar panel input to common power rail
  • ISIS Power Battery Unit (IPBU) – Secondary power storage and retrieval control
  • ISIS Power Battery Pack (IPBP) – Battery holder with integrated fuse
  • ISIS Power Distribution Unit (IPDU) – Power regulation to attached subsystem loads

One or more of each of these units can be combined to form the platform EPS.