Gate Driving Unit Node Potential Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing gate driving units face issues with insufficient charging capacity for the pull-up node during the input phase and inability to pull down the potential of the pull-down node in the time period between the input and output phases due to competitive connections and current leakage.
Innovation Solution
A gate driving unit comprising a pull-up node denoising circuit, a pull-down node control circuit, a pull-up node control circuit, and an energy storage circuit, which controls coupling and decoupling between nodes and terminals to maintain and store energy, preventing potential drops and ensuring proper charging and potential control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a pull-up node and pull-down node are competitively connected in a gate driving unit, then the circuit structure is simplified, but the charging capacity for the pull-up node becomes insufficient and the pull-down node cannot maintain proper potential control
Solution Approach 1:
The gate driving unit is segmented into distinct functional modules: a pull-up node control circuit with switching elements for charging control, a pull-down node control circuit with separate switching elements for discharging control, and an energy storage circuit. This segmentation eliminates the competitive connection problem by providing dedicated control paths for each node, ensuring sufficient charging capacity and proper potential control while maintaining reasonable structural organization.
2Productivity
If the pull-up node is charged during the input phase, then the output signal can be generated, but the pull-down node cannot pull down its potential in the time period between input and output phases
Solution Approach 1:
The energy storage circuit is charged in advance during the input phase when the pull-up node is being charged. The pull-down node control circuit is configured to activate before the output phase begins, preliminary pulling down the pull-down node's potential to prepare for the upcoming output phase. This preliminary action ensures that the pull-down node maintains proper potential levels during the critical time period between input and output phases.
Solution Approach 2:
The gate driving unit employs periodic switching actions where the pull-up and pull-down control circuits operate in alternating cycles. During the input phase, the pull-up control circuit activates to charge the pull-up node while the pull-down control circuit prepares. During the output phase and the intervening period, the roles reverse or maintain appropriate states. This periodic action pattern ensures both nodes maintain proper potentials throughout the complete operating cycle.
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
The solution effectively addresses the charging capacity and potential control issues, ensuring reliable gate driving signals by maintaining the pull-up node's high voltage and preventing potential drops during the input phase and between phases, thereby preventing gate driving output failures.
Implementation Method 1
The energy storage circuit is electrically coupled to the second pull-up node and is configured to store electric energy
Data Source
AI summary
A gate driving unit includes: a pull-up node denoising circuit; a pull-down node control circuit; a pull-up node control circuit; and an energy storage circuit. The pull-up node denoising circuit is configured to, under control of a potential of the pull-down node, control coupling or discoupling between the first pull-up node and the input terminal. The pull-down node control circuit is configured to, under control of a control voltage, control the potential of the pull-down node; under control of a potential of the second pull-up node, control coupling or discoupling between the pull-down node and the input terminal. The pull-up node control circuit is configured to, under control of an anti-leakage control voltage, control coupling or discoupling between the first pull-up node and the second pull-up node, and configured to maintain the potential of the second pull-up node. The energy storage circuit is configured to store electric energy.