Signal Transmitting Circuit Initialization for Voltage Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Signal transmitting circuits in semiconductor devices face malfunctions and high current consumption due to the use of multiple voltages with different levels, leading to unstable supply voltage stabilization during initialization operations.
Innovation Solution
Incorporating a logic gate, pre-driver circuit, and NMOS transistors with an initialization circuit that generates and manages pull-up and pull-down control signals using distinct supply voltages, and includes a comparator to ensure proper initialization before enabling the power-up signal, preventing simultaneous activation of NMOS transistors and reducing current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple voltages with different levels are used in signal transmitting circuits, then signal transmission capability is improved, but malfunction and current consumption increase
Solution Approach 1:
The initialization circuit performs preliminary actions by pre-charging or pre-discharging the output node to appropriate voltage levels before the main signal transmission begins. This ensures that when multiple voltages are switched during operation, the circuit is already in a stable state, preventing malfunctions caused by voltage conflicts or undefined states during transitions.
Solution Approach 2:
The initialization circuit acts as an intermediary between the power supply and the signal transmission circuitry. It mediates the introduction of multiple voltage levels by carefully controlling when and how different voltage domains are activated, preventing direct conflicts between voltage domains that would cause malfunctions.
2Adaptability or versatility
If multiple voltages with different levels are used in signal transmitting circuits, then signal transmission capability is improved, but current consumption increases
Solution Approach 1:
The initialization circuit performs preliminary charging or discharging of the output node before main operation begins. By establishing proper voltage levels in advance, it prevents excessive current draw during signal transitions and ensures efficient operation when multiple voltage domains are active simultaneously.
Solution Approach 2:
The initialization circuit operates periodically or at specific phases (e.g., during clock cycles when no data transmission occurs) to recharge or reinitialize voltage nodes. This periodic maintenance prevents continuous current consumption while maintaining the ability to handle multiple voltage levels when needed.
3Stability of the object's composition
If initialization is performed before power-up signal is enabled, then voltage stabilization is improved, but circuit complexity increases
Solution Approach 1:
The initialization circuit is merged with the existing power management infrastructure by sharing control signals and power supply connections. The initialization function is integrated into the same control logic that manages power-up sequences, reducing overall circuit complexity while achieving proper voltage stabilization before main operation begins.
Data Source
AI summary
A signal transmitting circuit may include: a logic gate coupled in series to transmit a signal, and operated by a first supply voltage; a pre-driver circuit suitable for generating a pull-up control signal and a pull-down control signal in response to the transmitted signal, wherein a second supply voltage having a level greater than the target level of the first supply voltage is used to generate the pull-up and pull-down control signals; a first NMOS transistor suitable for pulling up an output node using the first supply voltage, in response to the pull-up control signal; a second NMOS transistor suitable for pulling down the output node using a pull-down voltage, in response to the pull-down control signal; and an initialization circuit suitable for initializing the pull-up and pull-down control signals when the level of the first supply voltage is less than a reference value, before a power-up signal is enabled.