Reference Voltage Stabilization Using Pre-Charged Charge Storage
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Solution Overview
Problem
Existing reference voltage stabilization methods in electronic circuits face challenges in providing a stable reference voltage signal due to limited driving capability, leading to glitches and increased hardware and energy costs, especially when impedance increases or time for driving the load decreases.
Innovation Solution
A reference voltage stabilization apparatus and method that utilize a voltage buffer coupled with a charge storage device and a charging/discharging circuit to rapidly stabilize the voltage at a load by charging or discharging the charge storage device, reducing the reliance on the voltage buffer's current and thus lowering hardware requirements and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the voltage buffer's driving capability is increased to reduce settling time, then the stabilization speed improves, but the hardware complexity and energy consumption increase quadratically
Solution Approach 1:
The charge storage device is pre-charged to the target voltage level before the voltage buffer connects to the load. When connection is needed, the pre-charged device immediately discharges to stabilize the voltage, eliminating the need for the voltage buffer to gradually charge the load and significantly reducing settling time without requiring increased buffer driving capability.
Solution Approach 2:
The charge storage device acts as an intermediary between the voltage buffer and the load. It absorbs the transient current requirements and voltage stabilization demands, allowing the voltage buffer to operate at lower power levels while still achieving rapid voltage stabilization through the intermediary's quick charge/discharge cycles.
2Speed
If the voltage buffer's driving capability is increased to reduce settling time, then the stabilization speed improves, but the hardware complexity increases
Solution Approach 1:
The charge storage device is pre-charged to the target voltage level before the voltage buffer connects to the load. When connection is needed, the pre-charged device immediately discharges to stabilize the voltage, eliminating the need for the voltage buffer to gradually charge the load and significantly reducing settling time without requiring increased buffer driving capability.
Solution Approach 2:
The charge storage device acts as an intermediary between the voltage buffer and the load. It absorbs the transient current requirements and voltage stabilization demands, allowing the voltage buffer to operate at lower power levels while still achieving rapid voltage stabilization through the intermediary's quick charge/discharge cycles.
3Reliability
If the impedance of the load increases or the time for driving the load decreases, then the stabilization requirement becomes more stringent, but the voltage buffer still may not provide enough driving capability, requiring several improvements that increase hardware and power quadratically
Solution Approach 1:
The charge storage device is pre-charged to the target voltage level before the voltage buffer connects to the load. When connection is needed, the pre-charged device immediately discharges to stabilize the voltage, eliminating the need for the voltage buffer to gradually charge the load and significantly reducing settling time without requiring increased buffer driving capability.
Solution Approach 2:
The system dynamically changes the operating parameters by switching between the voltage buffer's steady-state operation and the charge storage device's transient response. This allows the system to handle high-impedance loads and rapid stabilization requirements by utilizing the charge storage device's ability to deliver high current bursts without permanently increasing the voltage buffer's complexity.
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
This approach enables rapid stabilization of the output voltage signal at the load, reducing glitches and minimizing hardware and energy costs, making it suitable for high-speed applications by decoupling the stabilization time from the voltage buffer's current, thereby enhancing efficiency and reducing complexity.
Implementation Method 1
a charge storage device coupled with the output node; and a charging/discharging circuit coupled with the charge storage device
Data Source
AI summary
A reference voltage stabilization apparatus is disclosed, having an input node for receiving a reference voltage, an output node for coupling with a load, a voltage buffer coupled between the input node and the output node, a charge storage device coupled with the output node, and a charging/discharging circuit coupled with the charge storage device for charging or discharging the charge storage device. The voltage buffer and the charged/discharged charge storage device are coupled with the load so that the voltage at the load equals the reference voltage after a period of time.