Voltage Converting Circuit Feedback Terminal Stability
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Solution Overview
Problem
Voltage converting circuits face instability due to malfunctioning feedback terminals, which can lead to incorrect voltage feedback signals, potentially causing the circuit to output unstable voltages.
Innovation Solution
A voltage converting circuit with a detection unit that uses a testing current to assess the feedback terminal's functionality by monitoring voltage changes over specific time intervals, sending enable or disable signals to the main circuit based on reference voltage thresholds, thereby ensuring the circuit operates only when the feedback terminal is functioning correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a feedback terminal is incorporated into the voltage converting circuit to feedback voltage signals, then the voltage converting circuit can output steady voltage, but the circuit becomes vulnerable to instability when the feedback terminal malfunctions
Solution Approach 1:
The patent applies preliminary action by performing a functionality test on the feedback terminal before the voltage converting circuit operates. The testing unit applies a test current to the feedback terminal and detects the resulting voltage change to determine if the feedback terminal is functioning correctly. Only after successful verification does the detection unit send an enable signal to allow the main circuit to operate, preventing malfunction-induced instability before it can occur.
Solution Approach 2:
The patent implements feedback by using the detection unit to continuously monitor the feedback terminal's functionality and send enable or disable signals to the main circuit based on the terminal's operational status. This closed-loop feedback mechanism ensures that the circuit operates only when the feedback terminal is functioning correctly, maintaining voltage stability while protecting against malfunction.
2Productivity
If the voltage converting circuit operates without verifying feedback terminal functionality, then the circuit can function continuously, but incorrect voltage feedback signals may cause unstable voltage output
Solution Approach 1:
The patent performs the feedback terminal functionality test as a preliminary action before enabling continuous operation. The testing unit verifies the feedback terminal's functionality by applying test current and detecting voltage changes. Only after successful verification does the detection unit enable the main circuit, ensuring that continuous operation only begins when the feedback terminal is confirmed to be functioning correctly.
Solution Approach 2:
The detection unit provides continuous feedback on the feedback terminal's operational status. When the feedback terminal malfunctions, the detection unit sends a disable signal to stop the main circuit, preventing unstable voltage output. This feedback mechanism balances productivity and reliability by allowing continuous operation only when the feedback terminal is verified functional.
3Reliability
If a testing unit and detection unit are added to verify feedback terminal functionality, then the circuit stability is improved, but the device complexity increases
Solution Approach 1:
The patent merges the testing unit and detection unit into an integrated verification system that works together to assess feedback terminal functionality. The testing unit applies test current while the detection unit monitors voltage changes, and both units are controlled by the same detection logic that generates enable or disable signals. This merging approach improves reliability while minimizing the increase in device complexity by combining multiple functions into a coordinated system.
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 solution effectively prevents the main circuit from operating when the feedback terminal is malfunctioning, thereby enhancing the stability and reliability of the voltage converting circuit by ensuring accurate voltage conversion.
Implementation Method 1
the testing unit 40 outputs a testing current I to the feedback terminal 60... the detection unit 50 detects a change to the third voltage V3 feedback from the feedback terminal 60
Data Source
AI summary
A voltage converting circuit includes an input terminal, an output terminal, a main circuit a feedback terminal, a testing unit, and a detection unit. The main circuit is coupled between the input terminal and the output terminal to convert a first voltage input from the input terminal into a second voltage and output the second voltage via the output terminal. The feedback terminal is coupled to the output terminal and the testing unit is coupled to the feedback terminal to output a testing current to the feedback terminal to change a third voltage of the feedback terminal. The detection unit is coupled between the feedback terminal and the main circuit. The detection unit detects a change to the third voltage feedback from the feedback terminal to enable or disable the main circuit according to the change to the third voltage.