Voltage Transient Protection Circuitry Using Bridge Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing circuit designs for electronic components often use larger, more expensive devices to handle maximum voltage ratings, leading to wasted area and increased costs, as they are not optimized for lower operating voltages and are prone to high transient voltage events.
Innovation Solution
The development of voltage transient protection circuitry using a bridge circuit configuration with high- and low-side devices, a voltage reference circuit, and a snub circuit, which allows the output node to be held at a selected voltage level, preventing excessive voltage and enabling the use of smaller, lower voltage components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher voltage rating devices are used to withstand maximum voltage, then reliability against voltage transients is improved, but device area and cost increase
Solution Approach 1:
The circuit monitors voltage conditions in advance and activates protection mechanisms before transient voltages can damage the load. The controller detects when voltage exceeds safe levels and responds by adjusting the bridge circuit operation, preventing damage before it occurs rather than relying solely on inherently high-voltage-rated components.
Solution Approach 2:
The patent introduces a controller as an intermediary between the power source and the load. This controller manages the bridge circuit to prevent voltage transients from reaching the load, allowing the use of low-voltage components protected by the control system rather than requiring all components to be rated for maximum transient voltages.
2Reliability
If higher voltage rating devices are used to withstand maximum voltage, then reliability against voltage transients is improved, but cost increases
Solution Approach 1:
The circuit monitors voltage conditions in advance and activates protection mechanisms before transient voltages can damage the load. The controller detects when voltage exceeds safe levels and responds by adjusting the bridge circuit operation, preventing damage before it occurs rather than relying solely on inherently high-voltage-rated components.
Solution Approach 2:
The patent introduces a controller as an intermediary between the power source and the load. This controller manages the bridge circuit to prevent voltage transients from reaching the load, allowing the use of low-voltage components protected by the control system rather than requiring all components to be rated for maximum transient voltages.
3Area of moving object
If low voltage components are used to reduce area and cost, then area and cost are reduced, but vulnerability to high transient voltages increases
Solution Approach 1:
The patent uses the harmful voltage transients as a control signal. When transient voltages occur, the controller detects the overvoltage condition and responds by adjusting the bridge circuit to clamp or limit the voltage, converting the potentially harmful transient into a controlled event that protects the low-voltage load.
Solution Approach 2:
The patent introduces a controller as an intermediary between the power source and the load. This controller manages the bridge circuit to prevent voltage transients from reaching the load, allowing the use of low-voltage components protected by the control system rather than requiring all components to be rated for maximum transient voltages.
4Reliability
If traditional voltage selection is used based on absolute maximum voltage, then protection against voltage transients is ensured, but area and cost are wasted
Solution Approach 1:
The circuit monitors voltage conditions in advance and activates protection mechanisms before transient voltages can damage the load. The controller detects when voltage exceeds safe levels and responds by adjusting the bridge circuit operation, preventing damage before it occurs rather than relying solely on inherently high-voltage-rated components.
Solution Approach 2:
The patent introduces a controller as an intermediary between the power source and the load. This controller manages the bridge circuit to prevent voltage transients from reaching the load, allowing the use of low-voltage components protected by the control system rather than requiring all components to be rated for maximum transient voltages.
Data Source
AI summary
Disclosed are advances in the arts with novel and useful voltage transient protection circuitry in configurations which include a bridge circuit in combination with one or more voltage reference, load to ground circuit, and/or snub circuit such that the output node is held at a selected voltage level, preferably mid-rail, and potentially damaging transient voltages are avoided.