Multi-Converter Switching Power Supply With Interleaved Output Control
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Solution Overview
Problem
Conventional multi-stage power converters for multiple output power delivery are difficult to design, expensive, and inefficient, particularly when they need to meet different power requirements and be compatible with each other.
Innovation Solution
A multi-converter switching power supply with a first and second switching converter, integrated control circuit, and a control method that allows operation in different power supply modes, enabling the converters to operate interleaved or independently based on feedback signals to meet varying power demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-stage power converters are designed to meet various power requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal single-stage converter design that can deliver multiple output voltages (5V, 12V, 20V, 28V) through a unified power delivery protocol. The converter uses a single transformer with multiple secondary windings and integrated control circuitry that automatically configures the output based on load requirements, eliminating the need for separate converter stages for different power levels while maintaining full adaptability across various power delivery standards
2Power
If multi-stage power converters are implemented to handle different power requirements, then power delivery capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple power conversion functions into a single integrated converter stage. The design combines primary and secondary voltage regulation, multiple output voltage generation, and power delivery protocol handling into one unified circuit architecture. This consolidation reduces component count (fewer transformers, capacitors, and control ICs), simplifies assembly processes, and lowers Bill of Materials costs while maintaining the capability to deliver various power levels through intelligent control
3Adaptability or versatility
If multi-stage converters are designed for compatibility with different standards, then adaptability is improved, but efficiency decreases
Solution Approach 1:
The patent employs dynamic voltage selection and converter configuration based on real-time load detection. The control circuitry continuously monitors output conditions and dynamically adjusts the transformer winding connections, switching element duty cycles, and feedback loop parameters to optimize efficiency for the current power delivery standard being used. This dynamic adaptation eliminates the energy losses associated with fixed multi-stage designs that must accommodate all standards through conservative design margins
Data Source
AI summary
A multi-converter switching power supply has a first switching converter, a second switching converter, a first port, a second port, and an integrated control circuit. The first switching converter receives an input voltage, converts the input voltage to a first output voltage, provides the first output voltage to a first output terminal and a second output terminal. The second switching converter receives the input voltage, converts the input voltage to a second output voltage, and provides the second output voltage to a third output terminal and a fourth output terminal. The second output terminal is coupled to the fourth output terminal. The first port has a first bus terminal for receiving a first voltage and a first ground terminal coupled to the second output terminal. The second port has a second bus terminal for receiving a second voltage and a second ground terminal coupled to the fourth output terminal.