Deep Sleep Power State Without Inverse Temperature Voltage Regulation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional power management systems fail to efficiently manage power consumption in integrated circuits by disabling inverse temperature-dependent voltage regulation during low power states, leading to inefficiencies in power usage and performance.

Innovation Solution

Implementing a power state where inverse temperature-dependent voltage regulation is disabled, along with disabling clock signals and maintaining voltage rails within a specific range to conserve power, while allowing power management logic to operate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If inverse temperature-dependent voltage regulation is enabled during low power states, then voltage stability is improved, but power consumption increases

Engineering Contradiction:

Improvevoltage stabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The voltage regulation system dynamically adjusts its operation mode based on the power state of the processor. During active states, inverse temperature-dependent voltage regulation is enabled to maintain voltage stability. During low power states (C1-C3), the regulation is disabled to reduce power consumption, and the voltage rail is allowed to drift within acceptable ranges without active compensation for temperature changes.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameters of the voltage regulator based on processor power state. When transitioning to low power states, the regulator stops actively compensating for temperature-induced voltage changes, effectively changing from a closed-loop temperature-compensated mode to an open-loop mode, thereby reducing power consumption while accepting reduced voltage stability.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If processor enters deep sleep state to save power, then power consumption is reduced, but wake-up time increases

Engineering Contradiction:

Improvepower consumptionVSAvoidwake-up time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

Instead of completely disabling the voltage regulation system during deep sleep states, the invention applies partial action by maintaining minimal monitoring capabilities while disabling active temperature compensation. This allows the system to achieve significant power savings while retaining the ability to quickly restore full regulation functionality upon wake-up, reducing the effective wake-up time penalty.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250216878A1Deep sleep power state with disabled inverse temperature dependency voltage regulation

Publication Date: 2025.07.03 INTEL CORP

AI summary

Techniques and mechanisms for providing a power state wherein a temperature-based voltage regulation is disabled. In an embodiment, a load circuit receives one or more clock signals, and one or more supply voltages. Power management logic facilitates either one of a first power state and a second power state, each for providing power to the load circuit. The first power state enables each clock signal provided to the load circuitry, and further comprises an enabled state of a functionality to perform inverse temperature dependency voltage regulation. The second power state disables each clock signal provided to the load circuitry, and further comprises a disabled state of the functionality. In another embodiment, during the second power state, each voltage supply provided to the load circuit is regulated in a respective voltage range which enables at least some state of the load circuit to be maintained.