Buck Voltage Output Circuit for Multi-Load E-Cigarette Power
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Solution Overview
Problem
Current electronic cigarette voltage output circuits are complex and fail to provide accurate and suitable driving voltages to different circuits, affecting the performance of additional functions beyond smoking, such as multimedia, touch operation, and solar charging.
Innovation Solution
A simplified voltage output circuit using a control chip and a step-down switch chip, with pulse modulation and resistance detection capabilities, to adjust and provide precise voltages to various components, including thermal wires and indicator LEDs, ensuring stable and flexible voltage delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex voltage output circuit structure is used, then multiple additional functions can be supported, but the circuit complexity increases and voltage accuracy decreases
Solution Approach 1:
The patent implements a universal voltage output circuit that can provide multiple different voltages (5V, 3.3V, 1.8V, 1.2V) through a single integrated circuit design. The circuit uses a switch chip with multiple output terminals and a control chip that can selectively enable different voltage output paths, allowing one circuit to serve multiple functions for different modules (power management, display, touch screen, etc.) without requiring separate voltage regulation circuits for each function.
2Adaptability or versatility
If a complex voltage output circuit structure is used, then multiple additional functions can be supported, but voltage accuracy and suitability for different circuits decreases
Solution Approach 1:
The patent segments the voltage output circuit into multiple independent output channels, each with dedicated switching elements and control logic. The control chip can independently control each voltage output terminal (VOUT1, VOUT2, VOUT3, VOUT4) to provide precisely regulated voltages. Each output path includes separate switching transistors and control signals, allowing independent optimization and precise voltage delivery to different modules without interference from other voltage outputs.
3Device complexity
If simplified voltage output circuit is used, then circuit structure is simplified, but voltage accuracy and control capability may be compromised
Solution Approach 1:
The patent introduces a control chip as an intermediary between the power source and multiple voltage output terminals. The control chip receives detection signals from various modules and automatically selects and activates the appropriate voltage output path. This intermediary component simplifies the overall circuit design by centralizing control logic while maintaining precise voltage delivery through automated switching and regulation, eliminating the need for complex manual control circuits at each voltage output point.
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
The solution provides accurate and adjustable voltages to different circuits, enhancing the performance of electronic cigarette functions, improving user experience by simplifying the circuit structure and protecting against overcharging and over-discharging.
Implementation Method 1
a step-down switch chip, with pulse modulation and resistance detection capabilities, to adjust and provide precise voltages
Implementation Method 2
pulse modulation and resistance detection capabilities, to adjust and provide precise voltages
Data Source
AI summary
A voltage output circuit and an electronic cigarette are provided. The voltage output circuit includes a control chip and a step-down switch chip. When a first switch element turns on, the modulation signal output terminal of the control chip outputs a pulse modulation signal to a first control terminal of the step-down switch chip, and access between a first access terminal and a second access terminal of the step-down switch chip is established, based on the effective pulse modulation signal. The output voltage of the second access terminal is less than a system power voltage. The voltage output circuit and the electronic cigarette outputs the pulse modulation signal to the step-down switch chip by the control chip, and the step-down switch chip outputs a suitable driving voltage to the load, such as a thermal wire, the voltage output circuit with simplified structure is adjustable and improved.