PCU-1C28
High-efficiency, compact DC-to-DC converter

SINGLE BOARD
COMPUTER

PCU-1C28

A high-efficiency, compact DC-to-DC converter designed to operate in Low Earth Orbit (LEO) environments that provides a regulated, isolated, 12V rail suitable for powering the full suite of Cesium communication products.

The Cesium PCU-1C28 includes a fixed-frequency converter with integrated filters and protections as well as a digital interface for telemetry in a credit-card-sized footprint. Each module is parallelable with other Cesium PCUs for higher output power or hot redundancy.

Use as a stand-alone power converter or combine with other Cesium modules for a system that works out-of-the-box.

High Performance.
Small Footprint.

The Cesium PCU-1C28 includes a fixed-frequency converter with integrated filters and protections as well as a digital interface for telemetry in a credit-card-sized footprint.

VIEW SPECIFications

Low Profile

Low profile and compact 50mm x 84mm x 13mm packaged form-factor. Thermal pillars bring heat to the flat surface.

VIEW SPECIFications

KEY FEATURES

• Compact 50mm x 84mm x 13mm packaged form-factor

• Fixed-frequency topology

• Integrated EMI and input filtering

• Gallium nitride (GaN) switches

• Over-temperature protection

• Input under-voltage lockout

• Parallelable for higher power or redundancy

• Digital interface for telemetry

• Suitable for both military and commercial applications on LEO satellites and airborne platforms

• Thermal pillars bring heat to flat surface

PRODUCT 
SPECIFICATIONS

Unregulated Input Voltage:

22 to 36 Vdc

Output Voltage:

11.5 to 12.5 Vdc

Maximum Power Output:

150 W at 12 Vdc

Sustained Output Current:

12.5 A

Nominal Efficiency:

94%

Baseplate Operating Temp:

-24 to +61 °C

Mass:

120 g

MECHANICAL VIEW

SYSTEM 
BLOCK DIAGRAM