Pulsed Wire-OR Matching Circuit for Low-Current Power Gating
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Solution Overview
Problem
Wire-OR matching circuits in DRAM experience high power consumption when the input-enabling signal is 'enabled' and the control signal is 'disabled', leading to inconvenience due to excessive current generation.
Innovation Solution
The implementation of a wire-OR matching circuit with a power switch controlled by a logic processor and periodic pulse signals to manage power supply to the input inverter, ensuring the circuit rapidly disconnects from power when not enabled, thereby preventing high current and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the input inverter remains continuously powered to ensure immediate response capability, then the circuit responsiveness is improved, but power consumption increases significantly when the control signal is disabled
Solution Approach 1:
The patent applies periodic action by using a power switch control signal that periodically enables and disables power supply to the input inverter. The logic processor generates this periodic control signal based on the output-enabling signal state, allowing the circuit to operate in low-power mode during disabled states while maintaining responsiveness when needed.
Solution Approach 2:
The patent implements dynamics by making the power supply state of the input inverter changeable rather than static. The power switch dynamically adjusts the power supply to the input inverter based on real-time control signals, transitioning between powered and unpowered states to optimize the balance between responsiveness and power consumption.
2Reliability
If the input inverter is continuously powered to maintain operational readiness, then the circuit reliability is improved, but high current generation occurs when the control signal is disabled
Solution Approach 1:
The patent applies preliminary action by proactively disabling power to the input inverter when the control signal indicates a disabled state, before any potential high current generation can occur. The logic processor monitors the output-enabling signal and preemptively controls the power switch to cut power, preventing the harmful high current effect from occurring in the first place.
3Loss of energy
If the power supply to input inverter is reduced to minimize power consumption, then energy efficiency is improved, but the circuit response time may increase
Solution Approach 1:
The patent maintains continuity of useful action by ensuring that while power is reduced during disabled states, the circuit can immediately resume full operation when the control signal changes to enabled. The power switch provides rapid power restoration, ensuring that the useful function (signal processing) continues without significant interruption or delay when needed.
Data Source
AI summary
A wire-OR matching circuit with low power consumption can be enabled by inputting an input-enabling signal representing “enabled.” The wire-OR matching circuit generates an output-enabling signal according to a control signal and a periodic pulse signal. When the periodic pulse signal represents “turn on”, if the input-enabling signal represents “enabled” and the control signal represents “not disabled”, the output-enabling signal represents “enabled;” if the input-enabling signal represents “enabled” and the control signal represents “disabled”, the output-enabling signal represents “not enabled.” The wire- or matching circuit can promptly break the connection between the high voltage source and the low voltage source by controlling the pulse width of the periodic pulse signal. In this way, large current is avoided, saving power consumption.