Isolated Gate Switch Charge Pump Circuit for Low Power Idle
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Solution Overview
Problem
Electronic switches in vehicles and devices face challenges in maintaining conductive states while minimizing power consumption, especially in standby modes, as current consumption varies significantly between IDLE and ON states, leading to potential battery depletion and inefficient power management.
Innovation Solution
A circuitry with an isolated gate electronic switch, a measuring device to determine charge, and an energy supply that adjusts charge based on the measured charge, utilizing high and low power charge pumps to manage current consumption across different states, allowing the switch to remain conductive with reduced power usage in IDLE mode and increased power when needed in ON mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic switch maintains a conductive state to ensure full functionality, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic charge pump operation that adapts to the operational state of the electronic switch. The charge pump circuit transitions between different operating modes (first charge mode during switching transitions, second charge mode during conductive state maintenance) based on control signals, enabling the system to optimize power consumption while maintaining reliability by providing appropriate charge levels only when necessary
Solution Approach 2:
The patent changes the charging parameters of the charge pump circuit based on operational requirements. During switching transitions, the circuit uses a first charging current to rapidly establish the conductive state, while during steady-state operation, it switches to a second, lower charging current to maintain the state with minimal power consumption, thus resolving the contradiction between reliability and energy use
2Power
If the electronic switch uses high charge to ensure full functionality in ON mode, then power is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic charge supplementation through the charge pump circuit that operates in distinct phases. The circuit provides high charge during brief switching transitions when full power is needed, then reduces to minimal periodic charging during steady-state operation, creating a rhythm of high-power and low-power periods that maintains functionality while reducing overall energy loss
Solution Approach 2:
The patent applies partial charging action during steady-state operation by using a reduced second charge current that is sufficient to maintain the conductive state but less than the full charging current needed for switching transitions. This partial action approach prevents energy waste by providing only the necessary charge level for maintaining operation rather than continuously applying maximum charge
Data Source
AI summary
A circuit includes an electronic switch with an isolated gate, a measuring device for determining a charge at the isolated gate, and an energy supply for providing charge to the isolated gate based on the charge determined by the measuring device.