Switched-Capacitor Switching Circuit With Preliminary Input Feed
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Solution Overview
Problem
Conventional switching circuits with switched-capacitor circuits suffer from reduced overall turn-on speed due to signal delays in capacitors and switches.
Innovation Solution
A switching circuit design that includes a first and second switched-capacitor circuit and a switch, where the switch receives the input voltage and couples it to the second switched-capacitor circuit, allowing for faster signal transfer by feeding the input voltage to the second switched-capacitor circuit in advance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two switched-capacitor circuits are connected in series to reduce crosstalk and timing skew, then the crosstalk reduction and timing skew reduction are improved, but the overall turn-on speed is reduced due to signal delays in capacitors and switches
Solution Approach 1:
The switch connected to the input voltage performs preliminary action by transferring the input voltage to the second switched-capacitor circuit in advance, before the first switched-capacitor circuit completes its charging. This preliminary charging action reduces the overall signal delay and improves turn-on speed while maintaining the series connection architecture for crosstalk reduction
2Reliability
If two switched-capacitor circuits are connected in series to reduce timing skew, then the timing skew reduction is improved, but the overall turn-on speed is reduced due to signal delays in capacitors and switches
Solution Approach 1:
The switch connected to the input voltage performs preliminary action by transferring the input voltage to the second switched-capacitor circuit in advance, before the first switched-capacitor circuit completes its charging. This preliminary charging action reduces the overall signal delay and improves turn-on speed while maintaining the series connection architecture for timing skew reduction
Data Source
AI summary
A switching circuit receives an input voltage and outputs an output voltage, and includes a first switched-capacitor circuit, a second switched-capacitor circuit, and a switch. The first switched-capacitor circuit is configured to receive the input voltage to generate an intermediate voltage. The second switched-capacitor circuit is coupled to the first switched-capacitor circuit and is configured to receive the intermediate voltage to generate the output voltage. One terminal of the switch receives the input voltage, and another terminal of the switch is coupled to the second switched-capacitor circuit.