Power Control Device Using Status Latch Module
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Solution Overview
Problem
Electronic products continue to consume standby power even when switched off, posing a challenge for meeting stringent energy conservation requirements and regulations, as existing solutions like additional power switches or microcontroller-based systems increase costs and complexity.
Innovation Solution
A power control device comprising a power switching unit, switching detection unit, status latch module, and logic unit that directly controls the power supply using a power switching signal, eliminating the need for a microcontroller to reduce standby power consumption by temporarily storing the on/off status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a microcontroller is used to control power supply status, then the power switch can indirectly control power supply through commands, but standby power consumption is still required for the microcontroller
Solution Approach 1:
The patent extracts the microcontroller from the power control system and replaces it with a dedicated status latch module that directly responds to power switch signals. This removes the unnecessary component that consumes standby power while preserving the essential power control function through direct hardware signaling between the detection unit and latch module.
Solution Approach 2:
The status latch module is designed to autonomously latch power status signals without requiring microcontroller intervention. The module self-manages the power control function by directly processing switching detection signals and controlling the power switching unit, eliminating the need for external control logic that would consume additional power.
2Use of energy by moving object
If an extra power switch is added to reduce standby power, then power control capability is improved, but product cost and design complexity increase
Solution Approach 1:
The patent merges the power detection function and power control function into a single integrated status latch module. The switching detection unit detects power status changes and the same module uses this information to control the power switching unit, combining multiple functions into one component to reduce overall system complexity while maintaining low standby power consumption.
Solution Approach 2:
The status latch module serves multiple functions: it detects power switching status through the detection unit, latches the power status state, and controls the power switching unit. This multi-functional design eliminates the need for separate components for each function, reducing device complexity while achieving the power savings goal.
Data Source
AI summary
A power control device for an electronic device includes a power switching unit for switching to output a dc power source to a load of the electronic device according to a power switching signal, a switching detection unit for responding a power switching status to generate a switching detection signal, a status latch module for generating the power switching signal according to the switching detection signal, a first status signal and a second status signal, and a logic unit for generating the first status signal and the second status signal for the status latch module according to the power switching signal, such that the status latch module latches the first status signal and the second status signal.