PMIC Current Meter for Real-Time Load Data
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Solution Overview
Problem
Existing power management integrated circuits (PMICs) in mobile devices lack the ability to provide real-time load current information, which hinders efficient power management and performance optimization, particularly in reducing power consumption and managing thermal throttling.
Innovation Solution
A PMIC with a current meter that measures and supplies real-time load current information to load devices, allowing for performance improvement operations such as thermal throttling, power control, and dynamic voltage and frequency scaling, using switching regulators and current sensors to minimize power loss and enhance energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If real-time load current measurement and supply is implemented, then power management efficiency and device performance are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent integrates the current meter function directly into the PMIC structure, merging the measurement capability with the existing power regulation components. This consolidation allows real-time load current information to be obtained without adding separate external measurement devices, thereby improving power management efficiency while controlling the increase in device complexity.
Solution Approach 2:
The current meter acts as an intermediary component that bridges the PMIC and the load device, providing real-time load current information to enable informed power management decisions. This intermediary function allows the system to optimize power consumption and thermal performance without requiring complex communication protocols or additional control mechanisms.
2Loss of energy
If switching regulators with inductors are used, then power consumption is reduced and energy efficiency is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent employs switching regulators that utilize inductors to change the operating parameters of power conversion, transitioning from linear regulation to switching mode operation. This parameter change enables the system to achieve superior energy efficiency by minimizing resistive power losses, while the integrated current meter provides the necessary feedback to optimize the switching operation.
Solution Approach 2:
The current meter provides real-time feedback on the load current drawn from the switching regulator, enabling the PMIC to adjust its operation to maintain optimal efficiency. This feedback mechanism allows the system to respond dynamically to changing load conditions, ensuring minimal power loss while managing the complexity introduced by the switching architecture.
Data Source
AI summary
An electronic device includes a power management integrated circuit (PMIC) including a plurality of regulators. Each of the plurality of regulators has a current meter configured to measure a respective load current. A load device is configured to receive real-time load current information from the PMIC and to perform a performance improvement operation based on the real-time load current information.