Semiconductor Integrated Circuit for Compact Wireless Charging and MST
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Solution Overview
Problem
The limited space in electronic devices, particularly mobile devices, restricts the mounting of various components to perform multiple functions such as wireless charging and magnetic secure transmission (MST), necessitating a semiconductor integrated circuit that can efficiently support these functions while occupying a small area.
Innovation Solution
A semiconductor integrated circuit with a recharge switch and a Wireless Recharge/MST device that selectively forms current paths for wired and wireless charging modes, and generates a magnetic signal in MST mode, allowing for compact integration of wired, wireless charging, and MST functionalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate components are mounted for wired charging, wireless charging, and MST functions, then each function can be reliably implemented, but the device area increases
Solution Approach 1:
The patent combines wired charging, wireless charging, and MST functions into a single semiconductor integrated circuit. The circuit includes a recharge switch for wired charging, a wireless recharge/MST device for wireless charging and MST operations, and control logic that manages all three functions through shared components and control signals, thereby reducing device area while maintaining functional reliability
Solution Approach 2:
The semiconductor integrated circuit is designed as a universal device that can perform multiple functions: wired charging through the recharge switch, wireless charging through the wireless recharge/MST device, and MST operations through the same wireless recharge/MST device. The control unit dynamically configures the circuit to perform different functions based on operational mode, making the device multi-functional without requiring separate dedicated components for each function
2Area of stationary object
If multiple components are integrated into a single semiconductor integrated circuit, then device area is reduced, but circuit complexity increases
Solution Approach 1:
The integrated circuit is segmented into distinct functional modules: a recharge switch for wired charging control, a wireless recharge/MST device for wireless charging and MST operations, and a control unit for managing operational modes. This modular segmentation allows complex functions to be organized into manageable sections, reducing design complexity while maintaining area efficiency
Solution Approach 2:
The circuit employs dynamic switching mechanisms where the control unit adjusts the operational state of different components based on the required function. The recharge switch and wireless recharge/MST device can be dynamically enabled or disabled, and their connection paths are dynamically configured, allowing the circuit to adapt its complexity to the current operational needs rather than maintaining full complexity for all functions simultaneously
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
Enables the reduction of device size by supporting multiple charging and transmission modes within a small area, enhancing the functionality and efficiency of electronic devices without increasing their physical dimensions.
Implementation Method 1
the Wireless Recharge/MST device configured to generate a magnetic signal based on the current
Data Source
AI summary
A semiconductor integrated circuit may include a recharge switch and a Wireless Recharge/MST unit. The recharge switch is connected with a battery through an intermediate node and provides a current path for wirely charging the battery in a wired charging mode. The Wireless Recharge/MST unit is connected between the intermediate node and a ground. The Wireless Recharge/MST unit disconnects the intermediate node and the ground in the wired charging mode, provides a wireless charging current to the battery through the intermediate node in a wireless charging mode, and is supplied with a current for generating a magnetic signal from the battery through the intermediate node in a magnetic secure transmission (MST) mode.