Power-On - 2023.2 English

UltraFast Design Methodology Guide for FPGAs and SoCs (UG949)

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2023.2 English

Power-on power is the transient spike current that occurs when power is first applied to the device. This current varies for each voltage supply and depends on the device construction, the ability of the power supply source to ramp up to the nominal voltage, and the device operating conditions, such as temperature and sequencing between the different supplies.

Spike currents are not a concern in modern device architectures when the proper power-on sequencing guidelines are followed.