Intelligent Gate Driver Switching for Multi-Priority Power Control
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Solution Overview
Problem
Conventional gate drivers are optimized for a single design priority, leading to inefficient hardware implementations, increased complexity, and reduced performance in systems requiring multiple design priorities, necessitating multiple gate drivers and hardware modules.
Innovation Solution
A multipurpose intelligent gate driver with a switch that can divert a drive signal to any of a plurality of gate drive circuits, each optimized for specific design priorities, allowing for intelligent selection based on system needs, reducing redundancy and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple gate drivers are used to address different design priorities, then performance for each priority is optimized, but hardware complexity and footprint increase
Solution Approach 1:
The patent implements a single gate driver capable of performing multiple functions by integrating multiple gate drive circuits with different optimizations (e.g., fast turn-off, voltage overshoot control, current limiting) within one device. A selector mechanism allows dynamic switching between different gate drive circuits based on the required design priority, making one gate driver universal for multiple applications rather than requiring separate dedicated gate drivers for each function.
2Speed
If gate driver is optimized for minimal turn-off time, then SC protection is improved, but voltage overshoot increases
Solution Approach 1:
The patent employs dynamic selection of gate drive circuits based on operating conditions. The system can switch between a gate drive circuit optimized for fast turn-off (accepting higher voltage overshoot) and another optimized for voltage overshoot control (with slightly slower turn-off). This dynamic adaptation allows the system to optimize for turn-off speed when SC protection is the priority, while switching to voltage overshoot control when that becomes the limiting factor.
3Manufacturing precision
If conventional gate drivers are used for each design priority, then specific performance targets are met, but hardware footprint and cost increase
Solution Approach 1:
The patent merges multiple specialized gate drive circuits into a single integrated gate driver device. Each gate drive circuit within the unified device is optimized for a specific design priority (e.g., fast turn-off, voltage overshoot control, coordinated protection), but they share common infrastructure such as power supply, control logic, and output stages. This consolidation achieves the same performance target achievement as multiple separate gate drivers while significantly reducing hardware footprint and cost.
Data Source
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AI summary
A multipurpose solid-state switch, including an input for receiving an input signal, a plurality of gate drive circuits, and at least one switch. The plurality of gate drive circuits are each configured with a different combination of passive and/or active electrical components. The at least one switch is arranged between the input and each of the plurality of gate drive circuits. The at least one switch is configured to switch between each of the plurality of gate drive circuits and thereby divert a drive signal to any one of the plurality of gate drive circuits. The switch is configured to switch between the plurality of gate drive circuits based on the input signal received from the input.