Industry White Papers

Addressing Complex FPGA Power Supply Requirements with PMICs

August 31, 2020 by ROHM Semiconductor

With the expanded use of FPGAs into a broader range of industries, including telecommunications infrastructure and datacenters, the power management designers for FPGA circuits are facing new challenges. Learn about possible solutions available to help meet stringent performance requirements.

FPGAs are becoming increasingly common in industrial and communication applications as key components of base stations, data centers, and telecommunications infrastructure. Systems featuring FPGAs also have a variety of accessory electronics, including memory, storage, communications interfaces, and other (possibly custom) circuits.

The power management systems for FPGAs and their accessories can become very complex and large if the design incorporates a variety of discrete PMICs. A hybrid solution only relying on two PMICs, a high-Vin PMIC/VR for direct conversion from 12V bus to processor core and memory supply voltages — power rails which demands the highest efficiency — and highly integrated 5V PMIC for other system components. This hybrid approach could deliver optimal balance as system designers seek to achieve maximum performance and efficiency at the lowest cost.