A power cord layout method for a power control unit

Abstract

The invention relates to a power line layout method for power control units. The distance between two power lines at a top metal layer TM2 is selected as a standard distance, the power control units are inserted in columns and placed row by row in each column, the distance between the columns is an integer multiple of the standard distance, and the column distance between the power control units of each column can be adjusted according to the voltage drop requirement and the integer multiple of the standard distance; and the connecting line layer of a power inlet line and a power outlet line is specified strictly, the width of the connecting line is automatically calculated via a script, and the effect of improving the front and back voltage drop of the power control units is achieved by reasonably arranging the positions of the power control units and sufficiently utilizing the winding resource of each layer.

Description

technical field [0001] The invention relates to the field of chip design and manufacture, in particular to a power line layout method for a power control unit. Background technique [0002] With the popularity of portable electronic products, more and more attention is paid to low power consumption design. When certain functions are not needed, it can be considered to turn off the power supply of this part of the logic circuit, so it is necessary to insert a power control unit to switch the power supply of these logic circuits. [0003] In the layout of the SoC chip, due to the different layout methods of the chip and the different shapes and power consumption requirements of various hard core IPs, there are obvious differences in the method of inserting the power control unit; the connection of the power line is more complicated, and it is not easy to obtain a better solution. Even many places can only be connected manually, which is inefficient and error-prone. As a resu...

AI Technical Summary

Problems solved by technology

[0003] In the layout of the SoC chip, due to the different layout methods of the chip and the different shapes and power consumption requirements of various hard core IPs, there are obvious differences in the method of inserting the power control unit; the connection of the power line is more complicated, and it is not easy to obtain a better solution. connection scheme, and even many places can only be connected manually, which is inefficient and error-prone

As a result, the voltage drop is large and the wiring resources will be underutilized, even hindering the connection of normal signal lines.

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