Abstract
On-demand cooling is inevitable to maximize the processor's performance, while fulfilling thermal constraints-this holds more in advanced technologies, where localized hotspots change during runtime. In this work, we propose to adopt an array of thin-film thermoelectric (TE) devices, which is integrated within the chip packaging, for both cooling and energy-harvesting purposes. Each TE device within the array can be during the runtime enabled either for energy harvesting or on-demand cooling. Our approach is implemented and evaluated using a mature finite elements analysis tool in which a commercial multicore mobile chip is modeled after careful calibrations together with state-of-the-art TE devices. Results demonstrate that our approach reduces the peak temperature by up to 24 circ C∘C and the average temperature by 10 circ C∘C across various benchmarks with the cost of 67.5 mW. Additionally, the harvested energy from the array of TE devices compensates for 89% of the required cooling energy.
| Original language | English |
|---|---|
| Article number | 9361095 |
| Pages (from-to) | 67-73 |
| Number of pages | 7 |
| Journal | IEEE Micro |
| Volume | 41 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2021 Jul 1 |
Bibliographical note
Publisher Copyright:© 1981-2012 IEEE.
Keywords
- Energy harvesting
- Mobile devices
- Thermal management
- Thermoelectric
ASJC Scopus subject areas
- Software
- Hardware and Architecture
- Electrical and Electronic Engineering