Pulse Transformer Real-Time Feedback Voltage Converter
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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, allowing for real-time sensing and control of the master switch to synchronize with load voltage changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If feedback networks are used to sense load voltage, then voltage measurement is achieved, but delay occurs preventing real-time synchronization
Solution Approach 1:
A pulse transformer is introduced as an intermediary component to transfer control signals from the primary winding to the secondary winding. This mediator enables real-time signal transmission without the delays associated with traditional feedback networks, allowing the master switch to synchronize with load voltage changes in real-time
Solution Approach 2:
The patent replaces the traditional electrical feedback network with a magnetic coupling system using a pulse transformer. This substitution eliminates the delays inherent in electrical feedback paths by utilizing magnetic field coupling to transmit control signals instantaneously between windings
2Power
If traditional feedback networks are used, then voltage conversion is achieved, but output voltage instability occurs
Solution Approach 1:
The patent implements a real-time feedback mechanism where the pulse transformer continuously monitors load voltage conditions and immediately adjusts the master switch duty cycle. This closed-loop control ensures output voltage stability by responding instantaneously to any deviations from the target voltage level
Solution Approach 2:
The system dynamically adjusts the master switch control signals based on real-time load conditions detected through the pulse transformer. This dynamic adaptation allows the voltage converter to maintain stable output despite varying load demands, improving overall system reliability
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 enables real-time control of the master switch, improving the stability and synchronization of output voltage with load demands, thereby reducing instability and enhancing the overall performance of the voltage converter.
Implementation Method 1
The use of coupling elements, such as capacitors or pulse transformers, to transmit control signals from secondary windings to primary windings
Data Source
AI summary
A voltage converter comprises a second controller as a power switch of the secondary side of the transformer for comparing a detection voltage representing an output voltage and/or load current with a first reference voltage and generating a control signal, and a coupling element for transmitting the control signal generated by the second controller to the first controller on the primary side of the transformer enabling the first controller to generate a first pulse signal driving the power switch to control the on/off state of the primary side winding.