Speaker
Description
We will present the latest space grade power architecture supporting an AMD/Versal ACAP FPGA featuring a PMBus based power management infrastructure. Radiation performance data will be presented for all utilized PMICs as well as for the PMBus controller targeting new space applications for low earth orbit employment. Our modular architecture approach consists of a main FPGA board and an auxiliary power architecture board. This allows the independent upgrade of the power components for different mission requirements. The PMBus controlled power architecture is also fully protected against power rail loss by redundant rails that automatically take over the load in case a rail fails. This architecture has already proven to be very effective for mission critical terrestrial applications such as in the banking server industry. The architecture highlights a single phase as well as multi-phase power management ICs, 40A power driver stages, a dual-core M4 microcontroller serving as PMBus controller and multiple XOR controller to manage the power redundancy. Communication is ensured through PMBus and I2C bus protocols between all components of the architecture. Redundant rails are switched by silicon based MOSFETs from Infineon as well. The base power design for the AMD versal ACAP FPGA is targeting a core current capability of 200A on VCC_int. PMBus allows the continuous sensing and control of the PMIC components and real-time performance data like output voltage, current level and failure modes are tracked during operation. Single event effect data will be presented for the individual power components with a focus on functional interrupts and single event transients occurring in the switch nodes. Finally, we will present geosynchronous and space station orbit upset rates.
Affiliation of author(s)
Infineon Technologies
| Track | Industrial experience |
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