USB Type-C Paddle Card Shorted Data Contacts
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Solution Overview
Problem
Conventional USB cables and connectors for USB Type-C charging are not optimized for efficient charging, leading to suboptimal charging times for electronic devices, and existing solutions do not effectively leverage the power delivery capabilities of USB Type-C connectors.
Innovation Solution
A USB Type-C connector system with a paddle card that shortens differential data contacts and repurposes data conductors as additional bus voltage conductors, increasing charging efficiency while maintaining backwards compatibility with USB Battery Charging Revision 1.2, and utilizing a captive cable configuration that integrates charger electronics for enhanced power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional USB cables and connectors are used for USB Type-C charging, then the connector structure is simple and manufacturing cost is low, but charging efficiency is suboptimal and charging time is extended
Solution Approach 1:
The patent merges the data conductor functions with additional power delivery functions by shorting the differential data contacts (DP and DN) at the paddle card. This allows the data conductors to serve dual purposes: maintaining USB Type-C protocol communication while simultaneously providing additional power delivery paths, thereby increasing charging efficiency without requiring separate dedicated power conductors
Solution Approach 2:
The differential data contacts are designed to perform multiple functions: they maintain their original data communication role in USB Type-C protocols while simultaneously serving as additional power delivery conductors when shorted at the paddle card. This multi-functionality increases power delivery capacity without adding separate components
2Productivity
If data conductors are repurposed as additional bus voltage conductors, then charging efficiency increases, but compatibility with existing USB Battery Charging Revision 1.2 standards may be affected
Solution Approach 1:
The system dynamically adapts its behavior based on the connected device. When a USB Type-C device is detected, the differential data contacts are shorted at the paddle card to enable enhanced power delivery. When connected to legacy devices, the system maintains conventional charging behavior, ensuring backwards compatibility while enabling advanced functionality when available
Solution Approach 2:
The patent changes the electrical configuration parameter of the differential data contacts from open (for data communication) to shorted (for power delivery) based on the charging mode and device type. This parameter change allows the same physical conductors to serve different functions, achieving both high efficiency for Type-C devices and compatibility for legacy devices
3Ease of manufacture
If the paddle card design is simplified to reduce costs, then manufacturing cost decreases, but charging efficiency may be compromised
Solution Approach 1:
The patent combines multiple functions into the existing paddle card structure without adding separate components. By shorting the differential data contacts at the paddle card and using the same traces for both data and power functions, the design achieves enhanced power delivery while maintaining a simple, cost-effective single-paddle-card architecture
Solution Approach 2:
The paddle card traces are designed to serve dual purposes: carrying data signals during normal USB Type-C operation and carrying power delivery current when the differential data contacts are shorted. This multi-functionality eliminates the need for separate power delivery circuitry, reducing manufacturing cost while maintaining high charging efficiency
Data Source
AI summary
Techniques for charging an electronic device using a Universal Serial Bus (USB) cable and connector are provided. In an example, an apparatus can include a charger, a USB cable coupled to the charger at a first end of the cable, a paddle card for a USB connector coupled to the cable at a second end of the cable, the paddle card including differential data contacts, and wherein the differential data contacts of the paddle card are shorted together at the paddle card.