Chip design PD corner definition and design rule

PD (Power Delivery) corner is a term commonly used in chip design to define the worst-case scenario for power consumption and delivery. It is an important consideration in the design of electronic devices, particularly in high-performance or low-power applications.

Design rules are the guidelines that dictate how a chip should be designed in order to achieve the desired performance while ensuring manufacturability. They specify the minimum allowed dimensions, spacing, and other parameters for various components on the chip, such as transistors, metal lines, vias, and pads.

In the context of PD corner definition and design rule, the design rules may need to be adjusted to accommodate the requirements of the power delivery network. For example, wider power and ground lines may be needed to reduce resistance and improve voltage drop, or more decoupling capacitors may be required to stabilize the power supply. These adjustments must be made while still adhering to the overall design rules to ensure the chip can be manufactured reliably.