公开(公告)号：US20230130642A1

公开(公告)日：2023-04-27

申请号：US17505374

申请日：2021-10-19

申请人： NVIDIA Corporation

发明人： Shaurakar Das ,  Haoxing Ren ,  Santosh Santosh ,  SeshasaiJyothi Kolli ,  Muhammad Arif Mirza ,  Sreedhar Pratty

IPC分类号： G06F30/392 ,  G06F30/398

摘要： To ensure proper operation (e.g., speed and/or function) of standard cells fabricated within an integrated circuit a minimum potential difference between the high and low power supply rails needs to be maintained. IR drop refers to a reduction in the potential difference between the power supply rails and is caused when the switching activity of cells that share a power supply rail is greater than can be provided at a particular time. Before fabrication, placement of the cells is reorganized within bounding box regions. Power density across the power rails within each bounding box is normalized based on spatial and temporal power density characteristics of each cell. The reorganization is IR aware and has minimal impact on timing and IR drop is mitigated because distributing current consumption between the supply rails reduces current spikes and IR drops.