Adaptive Pre-charge Voltage Converter for Boost Stability
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Solution Overview
Problem
Conventional boost converters face issues where the output voltage cannot exceed the input voltage due to excessive loading, leading to abnormal operation, as they rely on a predetermined charge current that does not adapt to changing output loads.
Innovation Solution
A voltage converting device with a feedback module, pulse-width-modulation module, and adaptive current generating unit that adjusts the charging current based on output voltage and load conditions, allowing the output voltage to exceed the input voltage and stabilize at a predetermined level, using a current adjusting module to dynamically adjust the current signal according to the comparing signal generated by the feedback path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a predetermined charge current is used in the boost converter, then the charging process can be simplified, but the output voltage cannot exceed the input voltage when the loading exceeds the driving capability
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed predetermined charge current to a dynamic adaptive charge current that automatically adjusts based on load conditions. The control unit monitors the output voltage and feedback signal, then dynamically modifies the charge current magnitude to match the actual loading requirements, ensuring reliable operation across varying load conditions.
Solution Approach 2:
The patent implements feedback by using a feedback signal derived from the output voltage and comparing it with a reference voltage. The control unit uses this comparison to detect load conditions and automatically adjusts the charge current accordingly. This closed-loop feedback mechanism ensures the output voltage can reliably exceed the input voltage even when loading exceeds initial expectations.
2Reliability
If the loading coupled to the output end exceeds the loading capability of being driven by the predetermined charge current, then the charging process may work abnormally, but increasing the charge current may cause overshoot and power inefficiencies
Solution Approach 1:
The patent uses dynamics to create an adaptive charge current that automatically adjusts its magnitude based on real-time load conditions. The control unit continuously monitors the feedback signal and reference voltage comparison, then dynamically scales the charge current to match actual requirements. This prevents both insufficient current (which causes abnormal operation) and excessive current (which causes overshoot and energy waste).
Solution Approach 2:
The patent applies parameter changes by modifying the charge current parameter according to load conditions. The control unit changes the current magnitude based on the comparison between feedback voltage and reference voltage, allowing the system to adapt to varying loading conditions. This dynamic parameter adjustment ensures optimal power efficiency while maintaining reliable charging operation.
3Device complexity
If a fixed charge current is used, then the device structure can be simplified, but the device cannot adapt to changing output loads
Solution Approach 1:
The patent implements feedback by incorporating a feedback signal path that monitors the output voltage and compares it with a reference voltage. The control unit uses this feedback information to automatically adjust the charge current based on actual load conditions. This feedback mechanism provides the necessary adaptability without requiring complex external control systems, as the adjustment happens automatically within the existing control structure.
Solution Approach 2:
The patent applies self-service by enabling the control unit to automatically adjust the charge current without external intervention. The system monitors its own operating conditions through the feedback signal and reference voltage comparison, then self-corrects by modifying the charge current accordingly. This self-adjusting capability provides load adaptability while maintaining a relatively simple control structure.
Data Source
AI summary
A voltage converting device includes a feedback module, for generating a comparing signal according to a feedback voltage and a reference voltage; a pulse-width-modulation module, for generating a driving signal according to comparing signal; a voltage-converting module including a low-side switch for controlling a connection between a node and ground according to driving signal, a high-side switch for controlling a connection between the node and an output end according to a control signal, an inductor coupled between the node and an input end, a feedback-voltage-generating unit for generating feedback voltage according to an output voltage of output end and a ratio, an adaptive current-generating unit for generating a current signal according to an adjusting signal, and a control unit for selecting driving signal or current signal as the control signal according to output voltage and an input voltage; and a current-adjusting module for generating adjusting signal according to comparing signal.