Power Delivery Device Removing Output Filter Coil
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Solution Overview
Problem
Conventional Power Delivery (PD) devices require filter coils for output sides, which occupy significant space and increase costs, limiting miniaturization and cost reduction while also restricting the ability to control output voltage and current capacity effectively.
Innovation Solution
The implementation of a PD device with a DC/DC converter between input and output, featuring a primary-side controller and a secondary-side controller that feedback control input signals to adjust output voltage and current capacity without the need for a filter coil, allowing for miniaturization and cost reduction while enabling precise control of output parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If filter coils are used for output side, then output voltage and current control is achieved, but mounting space increases and cost increases
Solution Approach 1:
The patent removes the filter coil from the output side of the DC/DC converter, extracting this component entirely from the system. The control function previously achieved by the filter coil is replaced by a different mechanism using primary-side control with secondary-side feedback, eliminating the need for the filter coil and thereby reducing mounting space.
Solution Approach 2:
The patent replaces the passive filtering mechanism (mechanical/electrical component approach) with an active control system using controllers on both primary and secondary sides. This substitution allows voltage and current control without requiring physical filter coils, thus reducing space while maintaining control functionality.
2Reliability
If filter coils are used for output side, then output voltage and current control is achieved, but device cost increases
Solution Approach 1:
By extracting and removing the filter coil from the output side, the patent eliminates the cost associated with this component. The control functionality is maintained through the controller-based system, achieving cost reduction while preserving voltage and current control capabilities.
Solution Approach 2:
The patent replaces expensive passive filter coil components with more cost-effective active control circuitry. The controllers and associated circuitry provide the necessary control function at a lower cost compared to traditional filter coil implementations.
3Power
If filter coils are used for output side, then power delivery function is achieved, but device size increases limiting miniaturization
Solution Approach 1:
The patent extracts and removes the filter coil from the power delivery path, eliminating the space it occupies. The power delivery function is maintained through the DC/DC converter and controller system, enabling miniaturization by removing unnecessary components.
Solution Approach 2:
The patent merges the control functions into integrated controllers that manage both power conversion and output regulation. This consolidation eliminates separate filter coil components and reduces overall device volume while maintaining full power delivery capability.
4Adaptability or versatility
If primary-side controller controls input current based on secondary-side feedback, then output voltage and current capacity control is achieved, but control system complexity increases
Solution Approach 1:
The patent implements a feedback system where the secondary-side controller monitors output parameters and sends feedback signals to the primary-side controller. This feedback mechanism enables precise control of output voltage and current capacity while managing system complexity through structured control architecture.
Solution Approach 2:
The patent uses feedback signals as intermediaries between the secondary-side and primary-side controllers. These intermediary signals carry control information across the isolation boundary, enabling coordinated control without requiring complex direct communication between controllers.
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
This configuration eliminates the need for filter coils, reducing space and costs, and allows for flexible control of output voltage and current capacity, enhancing the PD device's efficiency and adaptability to various loads.
Implementation Method 1
DC/DC converter disposed between an input and an output
Implementation Method 2
secondary-side controller configured to receive a control input signal of the control input, and then feedback the received control input signal to the primary-side controller
Data Source
AI summary
The PD device includes: a DC/DC converter disposed between an input and an output; a primary-side controller configured to control an input current of the DC/DC converter; and a secondary-side controller coupled to a control input, the secondary-side controller configured to receive a control input signal of the control input, and then feedback the received control input signal to the primary-side controller. The primary-side controller varies an output voltage value and an available output current capacity (MAX value) of the DC/DC converter by controlling the input current on the basis of the control input signal fed back from the secondary-side controller. There are provide the PD device, the AC adapter, the AC charger, the electronic apparatus, and the PD system, each capable of achieving miniaturization and cost reduction, and capable of controlling the output voltage value and the available output current capacity (MAX value).