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DTSTAMP:20260402T024533Z
LOCATION:3003\, Level 3
DTSTART;TZID=America/Los_Angeles:20250624T163000
DTEND;TZID=America/Los_Angeles:20250624T164500
UID:dac_DAC 2025_sess123_RESEARCH428@linklings.com
SUMMARY:BS-PDN-Last: Towards Optimal Power Delivery Network Design With Mu
 ltifunctional Backside Metal Layers
DESCRIPTION:Min Gyu Park, Amaan Rahman, and Sung Kyu Lim (Georgia Institut
 e of Technology)\n\nThe increasing demand to maximize PPA gains with backs
 ide metal layers has driven their function beyond power delivery. This stu
 dy introduces a novel BS-PDN-last flow, crucial for leveraging multifuncti
 onal backside metal layers, by deferring power routing to the post-signal 
 routing stage. This approach addresses the IR-drop and performance trade-o
 ffs inherent in conventional PDN-first flows. Experimental results show th
 at the BS-PDN-last flow achieves a 90% reduction in Total Negative Slack a
 nd a 12% performance gain with BS-CDN. Additionally, our work presents the
  first comprehensive comparison of FS-PDN, BS-PDN, and multifunctional bac
 kside designs, evaluated on both physical design and workload metrics leve
 raging accurate vector-based analysis.\n\nTopics: Design\n\nTracks: DES4: 
 Digital and Analog Circuits\n\nSession Chairs: Ioannis Savidis (Drexel Uni
 versity) and Kishor Kunal (Nvidia)\n\n
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