Switching Device Bulk Terminal Leakage Current Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing switching devices in connectors can transmit leakage currents to the power source when the voltage is de-asserted, causing unnecessary damage due to floating voltage levels.
Innovation Solution
A switching device with a first switch and threshold voltage adjustment circuitry that adjusts the voltage level of the bulk terminal based on an enable signal and power source voltage, cutting off the signal path between the bulk terminal and power source when the voltage is de-asserted to prevent leakage currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switching circuit is used to support multiple connections, then connection versatility is improved, but leakage current flows to the power source when voltage is de-asserted causing damage
Solution Approach 1:
The patent introduces a bulk terminal voltage adjustment circuit as an intermediary between the switching circuit and the power source. This circuit includes a bulk terminal voltage adjustment unit that dynamically adjusts the bulk terminal voltage of the switching transistor based on the enable signal state, and a leakage current prevention unit that activates when voltage is de-asserted to block leakage current paths, thereby preventing damage while maintaining connection versatility
Solution Approach 2:
The patent changes the voltage parameter of the bulk terminal dynamically. When the enable signal is asserted, the bulk terminal voltage is adjusted to enable normal switching operation. When the enable signal is de-asserted, the bulk terminal voltage is changed to a state that prevents leakage current flow, thus adapting the electrical parameters to different operational states to prevent damage
Data Source
AI summary
A switching device includes a first switch and a threshold voltage adjustment circuitry. The first switch is configured to be selectively turned on according to an enable signal, in order to connect a first pin to a second pin. The threshold voltage adjustment circuitry is configured to adjust a voltage level of a bulk terminal of the first switch according to the enable signal and a voltage provided from a power source. In response to the voltage being de-asserted, the threshold voltage adjustment circuitry is further configured to cut off a signal path between the bulk terminal and the power source.