CAVU Aerospace UK

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Peripheral boards to improve interface capability & modular design, Case: OBC-Hyper-Polar

  • June 4, 2026
  • CAVU Aerospace UK

The OBC-HYPER-2 is a compact, high-performance onboard computer based on the Microchip PolarFire SoC FPGA. It integrates a multi-core RISC-V processor subsystem with a radiation-tolerant flash-based FPGA fabric in a single device, providing both general-purpose computing and reconfigurable logic resources. Key Specifications are listed below but what it makes it commercially attractive is competitiveness in lead time & price. We can make it also commercially attractive by putting base module on roll production to have fraction of the lead time & costs and then improve interface capability & bespoke deliverables satisfied with Add-on cards, peripheral boards, daughter boards. Peripheral boards will be attached to OBC in a single chassis & increase weight only by 300 gr but make it much more modular & commercially competitive.

Processor

PolarFire SoC: 4x U54 RISC-V 64-bit + 1x E51 monitor core

Performance

>4,000 DMIPS combined; 4.80 GFLOPS FP32

FPGA Fabric

254k–461k logic elements, 336–672 DSP blocks, flash-based (ZeroFIT)

Volatile Memory

2 GB DDR4 ECC (fabric) + 2 GB LPDDR4 (MSS)

Non-Volatile Storage

512 GB eMMC + 128 MB QSPI NOR + 512 KB MRAM

Input Voltage

8–28 V DC (12 V / 28 V bus compatible)

Power Consumption

~5 W typical, <10 W peak

Mass

<1 kg

Dimensions

110 x 181 x 35.5 mm (with AddOnCard)

Enclosure

Aluminium, >2 mm walls, vented

Operating Temperature

-40 °C to +100 °C (industrial grade)

Connectors

MIL-DTL-83513 Micro-D throughout

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OBC-Hyper-Polar WITHOUT any peripheral boards- 600 gr

Interfaces (Base Unit WITHOUT Add on cards)

RS-422

4x full-duplex (9,600–16 Mbps)

RS-232

4x (up to 921.6 kbps)

CAN 2.0B

4x (2 hard + 2 FPGA fabric, up to 1 Mbps)

RS-485

4x (up to 16 Mbps)

SpaceWire

2x LVDS (ECSS-E-ST-50-12C, 2–200 Mbps)

Gigabit Ethernet

2x on main board (SGMII, 1000BASE-T)

ADC

16-channel 16-bit simultaneous (AD7616, ±5/±10 V)

Digital I/O

32x buffered GPIO + 8x bidirectional + 8x Direct-IO (48 total)

I2C

1x (3.3 V, 100/400 kHz)

USB

1x USB 2.0

JTAG

FlashPro5/6 compatible

SerDes

8x transceivers (up to 12.7 Gbps each) on expansion connector

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OBC-Hyper-Polar WITH peripheral board- 930 gr

The Add-on Card extends the OBC-HYPER-2 interface set to satisfy the full TRD requirements. It uses four 9-pin Micro-D connectors on the rear panel and incorporates proven PHY components already used on previous CAVU products. We can adapt 4x 9-pin Micro-D for so many applications.

Additional RS-422

5+ channels (total ≥9 with base unit)

CAN FD

Via FPGA fabric CAN controllers with FD capability

Additional GPIO/IO

As required per TRD

Connectors

4x 9-pin Micro-D (MIL-DTL-83513)

 

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