Charge Pump Bypass Circuit for Continuous Power Supply
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Solution Overview
Problem
Existing semiconductor integrated circuits face inefficiencies in power supply due to fluctuations in input voltage relative to output voltage, leading to temporary current interruptions and reduced power efficiency, especially when using differential signal transmission over wiring lines.
Innovation Solution
Incorporation of a charge pump circuit and control circuit to manage current flow through a bypass line, ensuring continuous current supply to the load even during voltage fluctuations, using AC filters and backflow prevention circuits to stabilize power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a backflow prevention circuit is used to prevent current reversal, then current flow direction is controlled, but current interruption occurs when input voltage is lower than output voltage
Solution Approach 1:
The patent applies dynamics by making the bypass line switchable between connected and disconnected states based on voltage conditions. The bypass line is connected when input voltage is lower than output voltage to allow backward current flow, and disconnected when input voltage is higher to prevent current reversal, enabling adaptive current path selection that resolves the contradiction between preventing current reversal and maintaining continuous supply.
Solution Approach 2:
The bypass line acts as an intermediary current path that mediates between the backflow prevention circuit and the power line. It provides an alternative route for current flow when the main power line cannot supply current due to voltage fluctuations, thereby maintaining continuous power supply while the backflow prevention circuit maintains its protective function.
2Reliability
If voltage fluctuation protection is implemented, then power supply stability is improved, but circuit complexity increases
Solution Approach 1:
The patent merges the bypass line with the existing backflow prevention circuit structure, integrating voltage fluctuation protection into the current path management system. This combination approach provides comprehensive protection against voltage fluctuations and current reversal without requiring completely separate protection circuits, thereby limiting the increase in circuit complexity.
Solution Approach 2:
The bypass line serves multiple functions: it provides an alternative current path during voltage fluctuations, enables continuous power supply when the main path is blocked, and works in conjunction with the backflow prevention circuit to maintain overall system reliability. This multi-functionality reduces the need for additional dedicated components.
3Productivity
If continuous current supply is ensured during voltage fluctuations, then power efficiency is maintained, but heat generation increases
Solution Approach 1:
The patent applies dynamics by dynamically switching between the main power line and the bypass line based on real-time voltage conditions. This dynamic path selection ensures continuous current supply and maintains power efficiency by using the appropriate path, while the controlled nature of the switching prevents excessive heat generation that would occur with uncontrolled current flow.
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
Enhances power efficiency and allows for continuous current supply, reducing circuit scale and heat generation, making it suitable for applications requiring high input voltage and large currents.
Implementation Method 1
a charge pump circuit provided on the bypass line
Implementation Method 2
a first AC filter provided on the first power line
Data Source
AI summary
A semiconductor integrated circuit includes a first backflow prevention circuit provided on a first power line between a first AC filter and a first power output terminal, a bypass line that bypasses the first backflow prevention circuit, a charge pump circuit provided on the bypass line, and a control circuit configured to operate the charge pump circuit such that a current flows into the bypass line and the first power output terminal, when an input voltage between a first power input terminal and a second power input terminal is lower than a first threshold voltage.