Reconfigurable Regulator Merging Linear and Switching Modes
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Solution Overview
Problem
System-on-chips require separate regulator circuits for linear and switching modes, leading to inefficiency, high costs, and lack of flexibility due to duplication of components, which occupy significant area and fail to regulate power in both modes effectively.
Innovation Solution
A reconfigurable power regulator that includes an error amplifier, PWM generator, digital multiplexer, and digital driver, allowing for mode selection between linear and switching modes, thereby enabling a single circuit to function in both modes efficiently and flexibly, reducing component duplication and area usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate regulator circuits are used for linear and switching modes, then each mode can be optimized independently, but device area and component duplication increase significantly
Solution Approach 1:
The patent combines both linear regulator and switching regulator circuits into a single integrated regulator that can operate in either mode. The regulator includes a control circuit capable of generating both linear mode control signals and switching mode control signals, allowing the same hardware to provide optimized performance for both operating modes without requiring separate dedicated circuits for each mode.
Solution Approach 2:
The regulator is designed as a universal circuit that can perform multiple functions - operating as a linear regulator when linear mode is selected and as a switching regulator when switching mode is selected. The control circuit can generate different types of control signals (linear control or PWM switching control) based on the selected mode, making the same hardware versatile enough to handle both regulation approaches.
2Reliability
If separate regulator circuits are used for linear and switching modes, then each mode has dedicated optimization, but manufacturing cost increases due to component duplication
Solution Approach 1:
The patent merges the functionality of separate linear and switching regulator circuits into a single integrated circuit. By combining the control logic, error amplifiers, and output stages into one unified regulator, the design eliminates the need to manufacture and stock separate regulator products for different modes, reducing manufacturing complexity and cost while maintaining optimized performance for both modes.
Solution Approach 2:
The universal regulator design allows manufacturers to produce a single product that serves dual purposes - linear regulation and switching regulation. This multi-functionality reduces the need for multiple product lines, simplifies production processes, and lowers per-unit costs through economies of scale while maintaining dedicated optimization for each operating mode.
3Reliability
If separate regulator circuits are used for linear and switching modes, then each mode is independently optimized, but system flexibility decreases
Solution Approach 1:
The regulator is designed as a universal power management solution that can adapt to different operating requirements. The system includes a mode selection mechanism that allows dynamic switching between linear and switching modes based on load conditions, efficiency requirements, or system state, providing flexibility while maintaining optimized performance characteristics for each mode through dedicated control algorithms.
Solution Approach 2:
The regulator implements dynamic mode switching capability where the operating mode can be changed based on real-time system conditions. The control circuit can dynamically adjust its operation between linear and switching modes, and the mode selection can be changed during operation to adapt to varying power requirements, load conditions, or efficiency targets, making the system highly flexible and adaptable.
4Adaptability or versatility
If mode selection is dynamically configurable, then system adaptability increases, but control complexity increases
Solution Approach 1:
The control circuit is designed as a universal controller that integrates both linear mode control logic and switching mode control logic within a single unified architecture. This universal control block can generate appropriate control signals for either mode without requiring separate independent control circuits, reducing the overall complexity that would otherwise result from having dual dedicated control paths while maintaining full adaptability for mode selection.
Data Source
AI summary
A reconfigurable regulator includes an error amplifier configured to generate a difference signal indicative of a voltage difference between a reference analog signal and a feedback analog signal; a pulse width modulation generator configured to receive the difference signal, and to generate a first pulse width modulated signal in a linear mode and a second pulse width modulated signal in a switching mode; and a digital multiplexer (MUX) configured to receive a mode selection signal, the first pulse width modulated signal and the second pulse width modulated signal. The digital MUX outputs one of the first pulse width modulated signal or the second pulse width modulated signal based on the mode selection signal. The reconfigurable regulator further includes a digital driver configured to receive one of the first pulse width modulated signal or the second pulse width modulated signal and to output a digital control signal based on the received one of the first pulse width modulated signal or the second pulse width modulated signal.