E28-200 28V SmallSat Electric Power System
ibeos
250W radiation-tolerant 28V SmallSat EPS with peak-power tracking, 96% solar array efficiency, 3.3V/5V/12V/28V buses, 10x switched outputs, RS-422/485/I2C/SPI, 30 kRad TID, TRL 9.
Key figurescomparable across the catalogue
- Mass
- 0.14 kg
- Power
- 2.5 W
- Largest dimension
- 96 mm
- TRL
- 9
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Max solar array input
- >250W (14–34V input)
- S/a conversion efficiency
- 96%
- 3.3v output
- 3 A (92% efficiency)
- 5v output
- 6 A (93% efficiency)
- 12v output
- 4 A (95% efficiency)
- Unregulated 28v bus
- 10 A
- Max charge voltage
- 33.6 V
- Max charge current
- 7 A
- Switched outputs
- 10x (10 mOhm typical)
- Interfaces
- RS-422/485 @ 115.2 kbps; I2C @ 400 kbps; SPI @ 1 Mbps
- Quiescent power
- 2.5 W
- Dimensions
- 96 x 90 x 14.5 mm
- Mass
- 140 g
- Operating temperature
- -40 to +105 deg C
- TID
- 30 kRad(Si)
- TRL
- 9
About
The Ibeos E28-200 is a 250W SmallSat Electric Power System providing radiation-tolerant flexible peak-power tracking for 28V battery systems. Delivers regulated 3.3V (3A), 5V (6A), and 12V (4A) buses plus an unregulated 28V battery bus at 10A. Includes 10 switched and unswitched current-limited outputs. Commands and telemetry via RS-422, RS-485 at 115.2 kbps, I2C at 400 kbps, and SPI at 1 Mbps. Protection includes OVP, UVP, OCP, and a configurable watchdog timer. Solar array conversion efficiency is 96%; regulator efficiencies are 92–95%. Operates from -40 to +105 deg C.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.