Power Receiver Circuit Interface Compatibility Detection
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Solution Overview
Problem
The existing power supply systems face challenges in detecting and preventing short circuits, particularly in USB Type-C interfaces, due to pin deformation or foreign objects, which can lead to high-temperature meltdowns, and the transition from USB Type-A to USB Type-C specifications increases complexity in short circuit detection and protection.
Innovation Solution
A power supply system and power receiver circuit that can detect and identify different communication interface specifications by using a delay threshold to confirm coupling and compatibility, incorporating voltage sensing, clock, and determination circuits to manage power supply and detect foreign objects, ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If USB Type-C interface is used with smaller pin distance, then connection density is improved, but short circuit risk increases due to pin deformation or foreign objects
Solution Approach 1:
The patent applies preliminary action by performing short circuit detection before power supply activation. The detection circuit checks for short circuits in advance through voltage sensing on configuration channel pins, and only enables power supply after confirming no short circuit exists, preventing harmful effects before they occur
Solution Approach 2:
The patent uses an intermediary detection circuit as a mediator between the connection interface and power supply. This circuit includes voltage sensing components that monitor configuration channel pins to detect short circuits, acting as a protective intermediary that prevents direct power flow when abnormalities are detected
2Adaptability or versatility
If USB Type-A to USB Type-C transition is implemented, then interface compatibility is improved, but detection complexity increases due to different interface specifications
Solution Approach 1:
The patent applies universality by designing a detection circuit that can handle multiple interface specifications (USB Type-A and USB Type-C) through a unified approach. The configuration channel pin detection method works across different interface types, enabling one circuit design to serve multiple functions and interface standards without requiring separate detection mechanisms for each specification
Data Source
AI summary
A power supply system includes a power supplier circuit and a power receiver circuit. The power supplier circuit supplies a power via a communication interface compatible with a first communication interface specification or a second communication interface specification. The first communication interface specification includes a delay threshold. After the power supplier circuit is coupled to the power receiver circuit, the power supplier circuit supplies the power after a first delay period. The power receiver circuit confirms whether the power supplier circuit is coupled to the power receiver circuit via a coupling confirmation step according to the first communication interface specification. The power receiver circuit confirms whether the power supplier circuit is compatible with the first communication interface specification or the second communication interface specification according to whether the first delay period is greater than the delay threshold.