Multi-Mode Voltage Stabilizing Circuit for Efficient Charging
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Solution Overview
Problem
Existing charging circuits for small-size display screens face low voltage conversion efficiency and high costs due to the need for a buck-boost converter, which is inefficient and costly.
Innovation Solution
A voltage stabilizing circuit with a driving controller and voltage regulating module that adjusts input voltage based on preset thresholds, using MOS transistors and a parasitic diode to stabilize output voltage, eliminating the need for both boost and buck converters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a buck-boost converter is added to ensure voltage difference, then the voltage regulation function is improved, but the conversion efficiency decreases and cost increases
Solution Approach 1:
The patent implements dynamic voltage regulation by switching between different converter modes (buck, boost, or bypass) based on real-time voltage conditions. The controller dynamically selects the appropriate conversion mode to maintain output voltage stability while optimizing efficiency, avoiding the need for a fixed buck-boost converter that operates inefficiently across all conditions.
Solution Approach 2:
The voltage conversion device is designed to perform multiple functions: it can operate as a buck converter when input voltage exceeds output voltage, as a boost converter when input voltage is below output voltage, or bypass the conversion when voltages are matched. This multi-functional approach replaces the need for separate buck-boost converter configurations, improving overall system efficiency.
2Reliability
If a buck-boost converter is added to ensure voltage difference, then the voltage regulation function is improved, but the device complexity and cost increase
Solution Approach 1:
The patent merges the buck converter and boost converter functionalities into a single integrated voltage conversion device with unified control logic. This consolidation eliminates the need for separate buck-boost converter circuits, reducing component count, circuit complexity, and cost while maintaining comprehensive voltage regulation capability.
Solution Approach 2:
The voltage conversion device is designed to perform multiple functions: it can operate as a buck converter when input voltage exceeds output voltage, as a boost converter when input voltage is below output voltage, or bypass the conversion when voltages are matched. This multi-functional approach replaces the need for separate buck-boost converter configurations, improving overall system efficiency.
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
Improves voltage conversion efficiency and reduces costs by optimizing voltage regulation through multiple operating modes, maintaining stable output voltage without simultaneous boost and buck converters.
Implementation Method 1
An inductance coil, wherein an input terminal of the inductance coil receives the input voltage VBAT, and the inductance coil is configured to increase the input voltage VBAT
Implementation Method 2
A voltage stabilizing circuit, comprising: a voltage regulating module... a driving controller... wherein the driving controller is configured to determine whether or not the input voltage VBAT is less than or equal to a first preset voltage Un
Data Source
AI summary
The present disclosure provides a voltage stabilizing circuit, a voltage stabilizing method, a charging circuit, and an electronic equipment. In the present disclosure, the voltage stabilizing circuit is designed to include multiple operating modes, which prevents a structure of simultaneously setting a boost converter and a buck-boost converter, thereby improving voltage conversion efficiency and reducing cost.