Power Supply Apparatus Mode Transition Control
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Solution Overview
Problem
Conventional power supply apparatuses experience high current stress and large ripple components in input and output voltages, leading to short lifetimes and poor stability due to direct mode switching and inefficient voltage stabilization.
Innovation Solution
A power supply apparatus with an input terminal, output terminal, switch, converting module, and control module that operates in multiple modes, using control signals to manage the switch and converting module to minimize current stress and stabilize output voltage, reducing ripple components and extending system lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the power supply apparatus directly switches between first mode and second mode, then the response speed is fast, but the current stress becomes relatively high
Solution Approach 1:
The control module performs preliminary action by detecting whether the input voltage meets the switching condition before mode transition. When switching from second mode to first mode, it verifies that the input voltage has been greater than the reference voltage for a predetermined delay time, preventing premature switching and reducing inrush current stress.
Solution Approach 2:
The power supply apparatus dynamically adjusts its operating mode based on real-time input voltage conditions. The control module continuously monitors the input voltage and automatically transitions between first mode (switch closed) and second mode (converting module active) to optimize performance while minimizing current stress during transitions.
2Device complexity
If the power supply apparatus directly switches between modes, then the system complexity is low, but the ripple component in voltages becomes large
Solution Approach 1:
The control module implements feedback control by continuously monitoring the input voltage and using this information to determine mode transitions. The feedback mechanism compares the input voltage against the reference voltage and maintains stable operation by switching modes appropriately, thereby reducing voltage ripple while keeping control complexity manageable.
3Use of energy by moving object
If the switch operates in ON state continuously, then the power supply efficiency is high, but the output voltage cannot be stabilized when input voltage is low
Solution Approach 1:
The power supply apparatus dynamically switches between two operational modes based on input voltage conditions. When input voltage is sufficient, the switch operates in ON state for high efficiency. When input voltage drops below the reference voltage, the system transitions to second mode where the converting module actively stabilizes the output voltage, ensuring reliability across varying input conditions.
Solution Approach 2:
The system changes its operational parameters based on input voltage levels. In first mode, the switch is closed and the system operates with high efficiency. In second mode, the switch opens and the converting module adjusts its conversion ratio to maintain stable output voltage, thereby adapting to different input conditions and ensuring both efficiency and reliability.
Data Source
AI summary
A power supply apparatus includes a switch, a converting module and a control module. When the switch operates in an ON state, an input voltage is outputted through the switch to serve as an output voltage. The converting module selectively converts the input voltage into the output voltage. When the power supply apparatus operates in a mode where the switch operates in an OFF state, where the converting module performs the conversion, and where the output voltage is stabilized at a target voltage value, and when a condition associated with the input voltage is met, the control module causes the output voltage to gradually change toward the input voltage.