Configurable Power Controller for Memory Data Retention Modes
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Solution Overview
Problem
Conventional power control circuits in computing systems fail to simultaneously reduce power consumption and retain data during low-power states, as they either cut off power or provide reduced voltage but not both, leading to data loss in low-power modes.
Innovation Solution
A configurable power controller that uses a configuration circuit and a power supply mode circuit with control inputs to manage power modes, including a sleep mode for power cutoff and a data retention mode with reduced voltage, utilizing serpentine routing to minimize in-rush current and switching delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power is cut off to reduce power consumption in low-power states, then power consumption is reduced, but data is lost
Solution Approach 1:
The power control is segmented into multiple independent modes (sleep mode, data retention mode, and normal operation mode) that can be selectively activated. The configurable power controller divides the power management function into distinct operational states, allowing the system to choose between power cutoff and data retention based on configuration settings, thereby resolving the contradiction between power reduction and data preservation.
2Use of energy by moving object
If reduced-supply voltage is provided to memory in sleep mode, then power consumption is reduced, but data retention capability is compromised
Solution Approach 1:
The power control system dynamically adjusts between different operational modes based on configuration inputs. The configurable power controller can transition between sleep mode with reduced voltage and data retention mode with appropriate voltage levels, allowing the system to optimize between power consumption and data retention reliability depending on the specific application requirements.
3Device complexity
If conventional power control circuit is used, then simple power cutoff is achieved, but multiple power modes cannot be simultaneously provided
Solution Approach 1:
The configurable power controller is designed as a universal power management device that can perform multiple functions through a single integrated circuit. It provides sleep mode, data retention mode, and normal operation mode capabilities within one controller, eliminating the need for separate control circuits for each power mode while maintaining circuit simplicity and achieving high adaptability.
Data Source
AI summary
A configurable power controller and method for controlling power of a macro circuit block, such as a memory circuit, in multiple power modes is described to help minimize power consumption of the macro circuit block when the application environment for the macro circuit block is in a lower power mode than during its normal power mode.