SIMO Converter Voltage Compensation for Fast Multi-Output Regulation
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Solution Overview
Problem
Existing Single Inductor Multiple Output (SIMO) converters face challenges in maintaining proper output voltage levels across multiple outputs due to variable load currents, often requiring complex control voltage loops that result in slow responses and substantial losses.
Innovation Solution
A priority-based control method is implemented in the SIMO converter, utilizing voltage control loops at each output terminal, which can include proportional-integral-derivative (PID) control or hysteretic control. Additionally, voltage compensation circuits are used to transfer charge between output terminals, allowing for more effective response to load variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If complex control voltage loops are used to maintain output voltage levels, then output voltage stability is improved, but response speed deteriorates
Solution Approach 1:
The patent divides the control system into multiple independent control loops, each responsible for a specific output voltage. Each control loop independently monitors and adjusts its associated output, enabling parallel operation that improves both stability and response speed simultaneously
Solution Approach 2:
The control loops continuously monitor output voltages and prepare adjustment signals in advance before load variations occur. This proactive control mechanism ensures that voltage stability is maintained with faster response by anticipating and pre-adjusting for potential disturbances
2Stability of the object's composition
If complex control voltage loops are used to maintain output voltage levels, then output voltage stability is improved, but energy losses increase
Solution Approach 1:
Each control loop independently manages its own output voltage regulation without requiring complex centralized control. This self-service approach simplifies the overall control architecture, reducing computational overhead and energy consumption while maintaining stable output voltages through decentralized autonomous regulation
3Loss of energy
If control methods are simplified to reduce losses, then energy efficiency is improved, but control precision deteriorates
Solution Approach 1:
The control system is segmented into multiple simple yet effective control loops, each handling a specific output. This segmentation allows each loop to use straightforward control logic that minimizes energy consumption while collectively maintaining high precision across all outputs through parallel independent regulation
Solution Approach 2:
The control loops dynamically adjust control parameters such as duty cycle based on real-time output voltage measurements. This adaptive parameter adjustment enables precise voltage control using simple control logic, achieving both energy efficiency and control precision simultaneously
Data Source
AI summary
A power converter includes an input circuit, an output circuit and a controller. The output circuit may comprise a plurality of output terminals configured to be connected to a plurality of loads. The input circuit may comprise a plurality of input terminals configured to be connected to one or more power sources. An inductive element may be coupled between the input circuit and the output circuit. The output circuit may feature one or more voltage compensation circuits connected between two output terminals, the voltage compensation circuits activated to compensate an output voltage at one of the two output terminals.