Type-A Charger CC Pin Switching for PD Cable Compatibility
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Solution Overview
Problem
Conventional chargers with Type-A ports cannot support Power Delivery (PD) protocol charging due to the mismatch between Type-A and Type-C ports, limiting the use of Type-A data cables with PD protocol-compatible chargers.
Innovation Solution
Incorporating a first CC pin in a Type-A female connector connected to a switching unit, which determines the type of data cable and switches between PD and non-PD charging modes based on a matching signal, allowing Type-A ports to support PD protocol charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Type-A port charger uses conventional D+/D- signal cable for communication, then it maintains compatibility with existing data cables, but it cannot support Power Delivery (PD) protocol charging
Solution Approach 1:
The Type-A female connector is designed to support multiple functions: it can perform both conventional D+/D- charging communication and PD protocol communication by adding a CC pin. The switching unit enables the connector to adapt between different communication modes, making it universal for both legacy and modern charging standards without requiring separate connectors.
Solution Approach 2:
A switching unit is introduced as an intermediary component between the CC pin and the charging processing units. This switching unit mediates the connection, routing signals appropriately based on the detected cable type, enabling the system to handle both PD and non-PD protocols through a single Type-A connector interface.
2Productivity
If a Type-C port charger uses CC signal cable for PD protocol communication, then it enables quick charging, but it is incompatible with the most widely used Type-A port data cables
Solution Approach 1:
The Type-A female connector with integrated CC pin and switching unit provides multi-functionality: it supports both PD protocol communication (for quick charging) and conventional D+/D- communication (for cable compatibility). This allows the charger to achieve quick charging capability while maintaining compatibility with widely used Type-A data cables.
Solution Approach 2:
The switching unit dynamically adjusts the connection configuration based on the detected cable type. When a PD-compatible cable is detected, it routes the CC pin to the PD charging processing unit; when a conventional cable is detected, it routes to the non-PD charging processing unit. This dynamic adaptation enables the system to optimize charging speed while maintaining broad compatibility.
3Adaptability or versatility
If a Type-A port charger adds a CC pin and switching unit to support PD protocol, then it enables both PD and non-PD charging options, but it increases the complexity of the connector configuration
Solution Approach 1:
The charging system is segmented into distinct functional modules: the Type-A female connector with CC pin, the switching unit, the PD charging processing unit, and the non-PD charging processing unit. This segmentation allows each component to have a specific function, making the overall system manageable despite increased complexity, and enables independent optimization of each module.
Data Source
AI summary
A charger, a data cable, and a charging device, and pertains to the field of communications technologies are provided. The charger includes a type-A female connector and a first processing module. The first processing module includes a PD charging processing unit, a non-PD charging processing unit, a data cable matching unit, and a first switching unit. The type-A female connector includes a first CC pin and a first communication pin. In a case that the data cable matching unit determines that the charger matches a connected data cable based on a matching signal transmitted through the first CC pin, the first switching unit is connected to the first CC pin and the PD charging processing unit. In a case that the charger does not match the connected data cable, the first switching unit is connected to the first CC pin and the data cable matching unit.