Low Power Circuit Modulating Duty Cycle for Idle Mode
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Solution Overview
Problem
Existing electronic devices face challenges in reducing power consumption, especially when in idle mode, as conventional power saving technologies fail to meet high environmental standards and energy efficiency criteria.
Innovation Solution
A low power consumption circuit and method that involves a microprocessor outputting a power control signal with changing pulse characteristics, modulating the duty cycle of a power supply signal through a power supply switch module, and utilizing this signal to operate a main circuit module, effectively reducing energy waste and meeting high power saving standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional power saving modes are used to reduce power consumption, then power consumption is reduced to some extent, but the power consumption cannot satisfy high power saving criteria and energy efficiency standards
Solution Approach 1:
The patent implements periodic action by using pulse-width modulation (PWM) to periodically switch the power supply signal to the main circuit module. The microprocessor generates periodic power control signals with adjustable duty cycles, causing the power supply switch module to periodically connect and disconnect power to the main circuit module, thereby achieving significant power reduction while maintaining operational functionality during idle modes
Solution Approach 2:
The patent applies dynamics by making the duty cycle of the power control signal dynamically adjustable based on different working modes. The microprocessor can change the pulse width or frequency of the power control signal when switching between normal and idle modes, enabling the power supply switch module to dynamically modulate the duty cycle of the power supply signal, thus optimizing power consumption according to actual operational requirements
2Use of energy by moving object
If the microprocessor enters idle mode to reduce power consumption, then some power savings are achieved, but the power consumption still does not meet high power saving standards
Solution Approach 1:
The periodic PWM power supply signal allows the main circuit module to remain in a low-power state while still being able to respond to user inputs. The periodic nature of the power signal ensures that the module can quickly transition from idle to active state when needed, maintaining responsiveness while achieving significant power savings during idle periods
Solution Approach 2:
The system performs preliminary action by pre-configuring the power control signal parameters and maintaining the ability to quickly switch from idle to normal mode. The microprocessor can immediately change the pulse characteristics of the power control signal when user input is detected, ensuring rapid response while maintaining power efficiency
Data Source
AI summary
An exemplary low power consumption circuit includes a microprocessor, a power supply switch module and a main circuit module. The microprocessor is capable of outputting a power control signal and changing a pulse characteristic of the power control signal when the microprocessor switches from a first working mode to a second working mode. The power supply switch module is capable of outputting a power supply signal. The power supply switch module is electrically coupled to the microprocessor to receive the power control signal and thereby modulates a duty cycle of the power supply signal according to a change of the pulse characteristic of the power control signal. The main circuit module is electrically coupled to the power supply switch module to receive the power supply signal and operative with energy provided by the power supply signal. Moreover, a method for reducing power consumption is also provided.