Is there any tool could estimate the power and time for changing supply voltage in DV

[jovine]

If I change my supply voltage in runtime, like from 1V to 0.8V. Is there any tools that can estimate the power and least time for these procedure?

I'm using CPF low power design flow.

 

[artmalik]

If both 1.0v and 0.8v are operational voltages of the design, then each voltage will have synopsys .lib associated with it. You can run primepower tool which will give you an estimate of power reduction at the two voltages.

 

[D.A.(Tony)Stewart]

I could not locate a working link to Fujitsu's paper, but can extract some details. Not sure if it is relevant.
The title is Fujitsu: CPF in the Low-Power Design Reference Flow

The low-power design flow upon which this SoC was developed, and which is incorporated in the Reference Design Flow
The flow included:

• Cadence Encounter RTL Compiler, as well as other synthesis tools
• Cadence Incisive Unified Simulator and Encounter Conformal Low Power for verification
• Fujitsu intelligent power switch capability, which estimates the requirements for power switches before implementation with attention to noise reduction.

• The tool inserts the right number of power switches to reduce noise while preserving performance, mitigating the effects of rush currents.
This software includes analysis and parameter tables which are based on Fujitsu’s knowledge of process/voltage parameters, switching times, cell and gate requirements, and empirical results from previous chip
• Cadence SoC Encounter

RTL-to-GDSII System for power-aware physical implementation;
This includes an automatic always-on switch insertion, a capability developed in cooperation between Fujitsu and Cadence that is now part of • • Encounter technology
• A Fujitsu proprietary power switch insertion tool, which supports non-rectilinear shaped physical power domains, with an easy graphical user interface (GUI) and full integration with Encounter technology​

 

[jovine]

I mean, I already could get the power consumption for both voltage mode. But what I'm trying to get is the switching power, like the procedure of changing supply voltage from 1V to 0.8V