CPU Power Generator Voltage Adjustment for Efficiency
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Solution Overview
Problem
Conventional computers suffer from low power efficiency due to switching and conduction losses in CPU driving power generators, which are exacerbated by high current levels, leading to inefficient power management and increased power consumption.
Innovation Solution
A computer system with a controller that adjusts the power supply to the CPU driving power generator based on the CPU's operation mode, using a CPU mode determiner to selectively switch between source power and system power, optimizing voltage levels to minimize losses and enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the CPU driving power generator uses a switch for power conversion, then power generation function is achieved, but switching loss and conduction loss increase
Solution Approach 1:
The patent changes the voltage parameter of the power supply from high voltage to low voltage (5V or lower) to reduce conduction losses in the switch while maintaining adequate power delivery capability for CPU operation
2Power
If high voltage is supplied from the power source to the CPU driving power generator, then sufficient power delivery is achieved, but conduction loss increases
Solution Approach 1:
The patent changes the voltage parameter from high voltage to low voltage (5V or lower) to minimize conduction losses while maintaining sufficient power delivery through optimized current management and power conversion efficiency
3Loss of energy
If the CPU operates in deep sleep mode (C3 or C4 state), then power consumption is minimized, but voltage regulation efficiency deteriorates
Solution Approach 1:
The patent changes the input voltage parameter to a low voltage level (5V or lower) that maintains efficient voltage regulation even when the CPU operates in deep sleep modes, preventing the power generator from entering low-efficiency operating regions
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
The solution improves power efficiency by reducing switching and conduction losses, particularly at low current levels, thereby extending battery life and reducing overall power consumption, as demonstrated by increased utilization time and improved efficiency metrics compared to conventional systems.
Implementation Method 1
a system driving power generator which converts source power input from the power source to be output to the system unit
Implementation Method 2
a CPU driving power generator which outputs driving power to drive the CPU
Data Source
AI summary
A computer includes a CPU and a system unit, and further includes a power source which generates source power, a system driving power generator which converts the source power to system power and which provides power to the system unit, a CPU driving power generator which outputs driving power to drive the CPU, and a controller which selectively supplies the source power or the system power to an input terminal of the CPU driving power generator according to an operation mode of the CPU. Thus, a computer adjusts a level of power supplied to a CPU driving power generator according to a CPU mode and improves power efficiency, and includes a control method thereof.