Dual-mode Voltage Regulator Component Sharing
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Solution Overview
Problem
Voltage regulators that operate in both linear and switching modes require a large number of electrical components, increasing fabrication costs without necessarily improving operational performance.
Innovation Solution
A voltage regulating apparatus that includes an output stage, error amplifier, PWM unit, selection unit, and power transistors, allowing operation in either linear or switching mode by sharing components and using discrete capacitors and inductors to adjust filtering based on operational mode, with a control unit to manage mode switching and optimize component usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a voltage regulator is designed to operate in both linear and switching modes, then it can meet various user requirements and improve adaptability, but the number of electrical components increases and fabrication cost rises
Solution Approach 1:
The patent implements a dual-mode voltage regulator where a single circuit architecture supports both linear and switching operational modes. The regulator uses mode-selectable circuitry that allows the same device to function as either a linear regulator or a switching regulator, eliminating the need for separate dedicated circuits for each mode and reducing overall component requirements.
Solution Approach 2:
The patent employs dynamic mode switching capability where the regulator can transition between linear and switching modes based on operational requirements. A mode selection mechanism allows the circuit to adapt its operating characteristics in real-time, enabling flexible current handling while maintaining a unified component structure rather than requiring fixed configurations for each mode.
2Adaptability or versatility
If more electrical components are included in the circuit layout to enable dual-mode operation, then the regulator can meet various user requirements, but fabrication cost increases
Solution Approach 1:
The patent combines the functionality of linear and switching regulator circuits into a single integrated architecture. By merging the operational capabilities into one unified design, the patent reduces the total number of discrete components required compared to implementing separate linear and switching regulator circuits, thereby lowering fabrication costs while maintaining dual-mode functionality.
Solution Approach 2:
The patent designs a universal regulator circuit that can operate in both linear and switching modes, allowing a single device to satisfy diverse user requirements. This multi-functional approach eliminates the need for multiple specialized components, reducing bill of materials costs and simplifying the manufacturing process while maintaining adaptability to different application needs.
3Ease of operation
If a linear mode voltage regulator is used, then it provides less output current suitable for light load, but it cannot handle heavy load requirements
Solution Approach 1:
The patent implements dynamic current handling capability where the regulator can switch between linear mode for light loads and switching mode for heavy loads. This dynamic operation allows the device to optimize its current delivery characteristics based on the actual load conditions, providing low-noise operation for light loads while maintaining high current capability for heavy loads through the same physical device.
Solution Approach 2:
The patent changes operational parameters (operating mode) based on load requirements. By detecting load conditions and switching between linear and switching modes, the regulator adjusts its electrical characteristics to match the demands of the connected load, thereby expanding its effective operating range from light-load to heavy-load applications using a single device.
Data Source
AI summary
The invention discloses a voltage regulating apparatus which includes: an output stage providing the apparatus with an output voltage and producing a partial voltage of the output voltage; an error amplifier coupled to the output stage and comparing the partial voltage with a reference to produce a first voltage; a PWM unit coupled to the error amplifier and comparing the first voltage with a voltage signal to produce second and third voltages; a selection unit coupled to the error amplifier and the PWM unit and outputting a fourth voltage equalling either the first or the second voltage; a first transistor coupled to the selection unit and receiving the fourth voltage and a DC voltage; and a second transistor coupled to the PWM unit, the first transistor, and a ground and receiving the third voltage; wherein a connection point of the first and second transistors is connected to the output stage.