Square Wave Circuit With Transient Voltage Staging
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Solution Overview
Problem
Generating high voltage amplitude square waves using semiconductor components manufactured by low breakdown voltage processes is challenging due to the high cost of high breakdown voltage semiconductor manufacturing processes.
Innovation Solution
A square wave generating circuit that employs a mimetic square wave signal with specific voltage intervals and transient voltages, allowing it to operate within a low breakdown voltage manufacturing process while maintaining high voltage amplitude, by using switches and signal generating circuits to manage voltage transitions and avoid exceeding the breakdown voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a high breakdown voltage semiconductor manufacturing process is used to generate high voltage amplitude square waves, then the voltage amplitude requirement is met, but the manufacturing cost increases
Solution Approach 1:
The voltage transition is segmented into multiple stages using a transient interval. Instead of directly switching between high voltage levels (which would exceed breakdown voltage), the circuit transitions through an intermediate transient voltage state. This segmentation allows the use of low breakdown voltage semiconductor components while still achieving high voltage amplitude square wave generation.
Solution Approach 2:
The circuit performs preliminary action by establishing a transient voltage state before completing the full voltage transition. The transient interval prepares the circuit in an intermediate state, preventing direct high-voltage stress on components. This preliminary transition enables safe operation within low breakdown voltage constraints while achieving the desired high voltage output.
2Ease of manufacture
If a low breakdown voltage manufacturing process is used, then manufacturing cost is reduced, but the ability to generate high voltage amplitude square waves is limited
Solution Approach 1:
The circuit dynamically controls the voltage transition timing and magnitude. By dynamically adjusting the transition to occur during a transient interval with controlled voltage differences, the circuit enables low breakdown voltage components to safely generate high voltage amplitude square waves. The dynamic control ensures that at no moment do components experience voltage differences exceeding their breakdown rating.
3Device complexity
If a direct voltage transition is performed between high voltage levels, then the square wave generation is simple, but the voltage difference exceeds the breakdown voltage and damages components
Solution Approach 1:
The circuit implements beforehand cushioning by introducing a transient voltage interval that acts as a buffer during voltage transitions. This cushioning prevents direct high-voltage stress on components by ensuring voltage differences never exceed the breakdown voltage. The transient interval serves as a protective cushion that maintains component safety while enabling high voltage amplitude square wave generation.
Data Source
AI summary
The present application provides a square wave generating method, applied in a square wave generating circuit, configured to generate a mimetic square wave signal, wherein the square wave generating circuit has a breakdown voltage. The square wave generating method comprises the square wave generating circuit generating the mimetic square wave signal as a first voltage during a first time interval; the square wave generating circuit generating the mimetic square wave signal as a second voltage during a second time interval; and the square wave generating circuit generating the mimetic square wave signal as a transient voltage during a transient interval between the first time interval and the second time interval, wherein the transient voltage is between the first voltage and the second voltage; wherein a first voltage difference between the first voltage and the second voltage is greater than the breakdown voltage.