Dual-Domain Power Distribution System in Mobile Devices
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Solution Overview
Problem
Existing mobile devices require multiple power domains, leading to increased cost, complexity, and space usage due to numerous power converters, which complicates power management and efficiency.
Innovation Solution
A mobile device with a power supply generating a supply voltage and a power converter producing a converted voltage, where the converted voltage powers higher-power components, while the supply voltage powers lower-power components, utilizing a distributed network of power converters and amplifiers managed through a communications bus for optimized power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple power domains are used to power different electronic components, then power delivery requirements are met, but device complexity and cost increase due to numerous power converters
Solution Approach 1:
A single power converter is designed to serve multiple power domains by dynamically adjusting its output voltage to match different voltage rails (e.g., 1.8V, 3.0V, 5.0V). The converter includes a voltage selection mechanism that allows it to function as different voltage sources as needed, eliminating the requirement for separate dedicated power converters for each domain.
Solution Approach 2:
Multiple previously separate power converter functions are merged into a single integrated power converter unit. This consolidation combines the functionality of multiple voltage generation circuits into one device, reducing component count while maintaining the ability to supply multiple voltage levels to different power domains.
2Power
If multiple power converters are used to serve different power domains, then specific voltage requirements are met, but area within mobile device increases
Solution Approach 1:
The single power converter incorporates voltage selection circuitry that enables it to output different voltage levels as required by different power domains. This multi-functional capability allows one converter to replace multiple dedicated converters, significantly reducing the total area occupied by power conversion components in the mobile device.
Solution Approach 2:
The power converter dynamically changes its output voltage parameter based on which power domain requires power at any given time. By adjusting the output voltage to match different voltage rails (1.8V, 3.0V, 5.0V), the converter adapts to different power requirements without requiring separate hardware for each voltage level.
3Power
If multiple power domains with different voltage levels are implemented, then component power requirements are satisfied, but power management complexity increases
Solution Approach 1:
The power converter includes feedback mechanisms that monitor the power requirements of different domains and automatically adjust its output voltage accordingly. The system detects which voltage rail is needed and provides appropriate voltage levels, reducing the complexity of power management by automating the voltage selection process.
Solution Approach 2:
The single power converter with voltage selection capability serves as a universal power source for all power domains. By consolidating multiple voltage generation functions into one device with automated voltage switching, the system simplifies power management architecture and reduces the complexity associated with coordinating multiple independent power converters.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power transmission losses, minimizes complexity, and enhances power management by allowing multiple devices to operate as a single system, optimizing power delivery and efficiency across different loading conditions.
Implementation Method 1
a power converter configured to generate a converted voltage from the supply voltage
Data Source
AI summary
A mobile device may include a power supply configured to generate a supply voltage, a power converter configured to generate a converted voltage from the supply voltage wherein the converted voltage is significantly different than the supply voltage, and a plurality of power domains. The plurality of power domains may include a first power domain global to the mobile device and comprising a first plurality of electronic components powered from the supply voltage and a second power domain global to the mobile device and comprising a second plurality of electronic components powered from the converted voltage, wherein power requirements of each of the second plurality of electronic components are significantly higher than power requirements of each of the first plurality of electronic components.