Wireless Power Integrated Circuit Reducing PCB Area
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Solution Overview
Problem
Conventional wireless power receiver systems are inefficient and occupy large space on printed circuit boards due to separate components for wireless power reception, battery charging, and fuel gauging, which limits their effectiveness and efficiency.
Innovation Solution
An integrated circuit (IC) that combines a wireless power receiver, battery charger, and fuel gauge on a single chip, controlled by a microprocessor, reducing external components and PCB area while enhancing energy efficiency and enabling fast charging and power delivery even when the battery is dead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate components are used for wireless power reception, battery charging, and fuel gauging, then each component can be optimized independently, but the overall device occupies large PCB area and has high component count
Solution Approach 1:
The patent combines the wireless power receiver, battery charger, and fuel gauge into a single integrated circuit chip. This merging of previously separate components reduces the overall PCB area occupied while maintaining the individual functionality of each component through integrated design and shared resource allocation.
Solution Approach 2:
The integrated circuit performs multiple functions simultaneously - wireless power reception, battery charging management, and fuel gauging - within a single device. This multi-functionality eliminates the need for separate dedicated components, thereby reducing component count and PCB space requirements.
2Reliability
If separate components are used for wireless power reception, battery charging, and fuel gauging, then each component can operate independently, but the device has high power dissipation and reduced efficiency
Solution Approach 1:
By integrating multiple functions into a single chip, the patent reduces the number of inter-component connections and interfaces, thereby minimizing signal loss and parasitic effects. The shared power management resources and coordinated operation within the integrated circuit reduce overall power dissipation compared to separate components.
Solution Approach 2:
The integrated circuit acts as an intermediary that coordinates power flow and management between the wireless receiver and battery charging functions. This centralized control optimizes power distribution and reduces energy losses that would occur in separate component architectures.
3Adaptability or versatility
If multiple separate components are used, then the system has high component count and complexity, but the design and implementation becomes more difficult
Solution Approach 1:
The integration of wireless power reception, battery charging, and fuel gauging into a single chip dramatically reduces component count and simplifies the overall system architecture. This merging eliminates the need for multiple separate components and their associated mounting, wiring, and configuration complexities.
Solution Approach 2:
The single integrated circuit provides universal functionality for power management tasks, reducing system complexity while maintaining adaptability. The integrated design allows for coordinated control of multiple functions through a unified interface, simplifying the overall system design and implementation.
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
The integrated circuit significantly reduces power dissipation, PCB space, and component count, offering improved efficiency and the ability to provide power wirelessly even when the battery is dead, with reduced power loss and smaller form factor.
Implementation Method 1
The more common standards for wireless transmission of power include the Alliance for Wireless Power (A4WP) standard and the Wireless Power Consortium standard, the Qi Standard. Under the A4WP standard, for example, up to 50 watts of power can be inductively transmitted to multiple charging devices in the vicinity of a coil
Data Source
AI summary
In accordance with aspects of the present invention, a wireless power integrated circuit is presented. The wireless power integrated circuit includes a wireless power receiver circuit; a battery charger circuit; and a microprocessor coupled to control the wireless power receiver and the battery charger circuit.