Power Delivery Switch Control for Hard Reset Without Alternative Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional Power Delivery (PD) devices require an alternative power source to execute Hard Reset protocols, leading to increased size and cost, especially in devices with single power source systems like AC adapters.
Innovation Solution
A PD device with a switch and control circuit that disconnects the power line from the power source during a Hard Reset protocol without interrupting the power supply to the control circuit, allowing voltage reduction and restoration without an additional power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an alternative power source is used to execute Hard Reset protocols, then the Hard Reset protocol can be executed, but the device size and cost increase
Solution Approach 1:
The patent segments the power supply path into two independent channels: a main power supply path for high-power delivery to external devices, and a control circuit power supply path for powering the control circuit. This is achieved by providing a dedicated second power source that supplies power to the control circuit independently from the main power source, allowing the control circuit to remain operational during Hard Reset operations without requiring an alternative power source.
Solution Approach 2:
The patent introduces a switch as an intermediary component between the main power source and the power line. This switch can be controlled to disconnect the power line from the main power source during Hard Reset operations, enabling voltage reduction on the power line while the control circuit continues to receive power from the second power source. The switch acts as a mediator that isolates the control circuit from voltage fluctuations on the power line.
Data Source
AI summary
There can be provided a power delivery (PD) device capable of achieving protocols, e.g. Hard Reset, without using any alternative power source, and a control method of thereof. The PD device includes: a power source; a power line configured to deliver power supplied from the power source, to an outside; a switch connected between the power source and the power line; and a control circuit connected to the power line so that power is supplied from the power source to the control circuit, wherein at the time when a Hard Reset protocol is received from the outside through the power line, the control circuit turns from ON to OFF the switch to disconnect the power line from the power source.