Power Supply Device Coupling Element Real-Time Control
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Solution Overview
Problem
In voltage converters, the delay in sensing load voltage through feedback networks prevents real-time synchronization of the driving component with load voltage changes, leading to potential instability in output voltage.
Innovation Solution
The use of coupling elements, such as capacitors or pulse transformers, to transmit control signals from secondary windings to primary windings, enabling real-time sensing and control of the master switch, thereby synchronizing the output voltage with load demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a feedback network is used to sense load voltage, then the load voltage can be measured, but the measurement is delayed and cannot achieve real-time synchronization
Solution Approach 1:
The patent introduces an intermediary coupling element (capacitor or pulse transformer) between the secondary winding and the driving component. This intermediary transmits voltage signals from the secondary side to the primary side, enabling the driving component to sense load voltage changes in real-time without the delay inherent in traditional feedback networks. The coupling element acts as a mediator that bridges the information gap between output and control stages.
Solution Approach 2:
The patent implements preliminary action by having the driving component sense load voltage changes through the coupling element before the actual voltage deviation occurs. The driving component proactively adjusts the master switch duty ratio based on anticipated load changes, preventing voltage instability rather than reacting to it after detection. This predictive control approach eliminates the time lag between measurement and correction.
2Ease of operation
If the driving component adjusts the master switch duty ratio based on delayed feedback, then output voltage can be controlled, but the output voltage becomes unstable and deviates from load requirements
Solution Approach 1:
The patent implements a real-time feedback mechanism where the coupling element continuously transmits secondary winding voltage signals to the driving component. The driving component monitors these signals and dynamically adjusts the master switch duty ratio in real-time, creating a closed-loop control system that maintains output voltage stability. This continuous feedback loop ensures the output voltage closely follows load requirements without deviation or instability.
3Productivity
If traditional feedback networks are used, then voltage conversion can be achieved, but the transient response is slow and synchronization with load changes is lost
Solution Approach 1:
The patent replaces the traditional mechanical/electronic feedback network with an electromagnetic coupling mechanism. The coupling element (capacitor or pulse transformer) uses electromagnetic fields to transmit voltage signals instantaneously from the secondary to the primary side, eliminating the slow signal propagation and processing delays characteristic of conventional feedback networks. This substitution enables rapid transient response while maintaining full voltage conversion functionality.
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
This approach allows for precise and timely adjustment of the master switch, stabilizing the output voltage and improving the transient response of the voltage converter, ensuring accurate power conversion.
Implementation Method 1
a coupling element (106) is further provided, wherein the coupling element (106) is adapted to couple the second controller (105) and the first controller (104)
Data Source
AI summary
The present invention relates to a power supply device for voltage converter, which includes a master switch, a first controller for generating a first pulse signal to drive the master switch to be turned on and turned off, a second controller for comparing a detection voltage representing an output voltage and/or load current with a first reference voltage to determine the logic state of a control signal generated by the second controller, and a coupling element connected between the first controller and the second controller for transmitting the logic state of the control signal to the first controller and enabling the first controller to determine the logic state of the first pulse signal according to the logic state of the control signal. The second controller includes a driving module for generating a second control signal to drive a synchronous switch to be turned on and turned off.