A configurable architecture to limit wakeup current in dynamically-controlled power-gated FPGAs
Bibliographic record
Abstract
A dynamically-controlled power-gated (DCPG) FPGA architecture has recently been proposed to reduce static energy dissipation during idle periods. During a power mode transition from an off state to on state, the wakeup current drawn from power supplies causes a voltage droop on the power distribution network of a device. If not handled appropriately, this current and the associated voltage droop could cause malfunction of the design and/or the device. In DCPG FPGAs, the amount of wakeup current is not known beforehand as the structures of power-gated modules are application dependent; thus, a configurable solution is required to handle wakeup current. In this paper we propose a programmable wakeup architecture for DCPG FPGAs. The proposed solution has two levels: a fixed intra-region level and a configurable inter-region level. The architecture ensures that a power-gated module can be turned on such that the wakeup current constraints are not violated. We study the area and power overheads of the proposed solution. Our results show that the area overhead of the proposed inrush current limiting architecture is less than 2% for a power gating region of size 3x3 or 4x4 tiles, and the leakage power saved is more than 85% in a region of size 4x4 tiles.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".