Energy-Saving Hub Circuit for Rapid Wake-Up and Low Power Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hubs face challenges in quickly transitioning from a sleep mode to a wake-up mode, resulting in delayed normal operation and failing to meet energy loss regulations, such as the European Union's Energy-Related Products (ErP) Directive and the US Department of Energy (DOE) standards for AC power products.
Innovation Solution
An energy-saving hub design that includes a power supply interface, power module, upstream and downstream connectors, a main control circuit, and a system circuit, where the system circuit is maintained in a sleep mode and can be quickly switched to a wake-up mode via a wake-up signal transmitted by the main control circuit upon device connection, allowing immediate normal operation while meeting low power loss requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the system circuit enters sleep mode to reduce power consumption, then energy loss is reduced to meet regulations, but the hub cannot immediately return to normal working state
Solution Approach 1:
The main control circuit remains in a non-sleep state and continuously monitors connection signals, performing preliminary detection work before the system circuit needs to wake up. This allows the system circuit to be awakened immediately when a device is connected, resolving the contradiction between low power consumption in sleep mode and fast wake-up speed.
2Reliability
If conventional hubs maintain basic functional operations to meet energy regulations, then they can operate continuously, but static power loss cannot be reduced to 0.3 W or less
Solution Approach 1:
The hub's control functions are segmented into two parts: the main control circuit that remains active to detect connection signals, and the system circuit that enters sleep mode to reduce power consumption. This segmentation allows the hub to maintain basic detection functionality while achieving the required 0.3 W or less static power loss.
3Loss of energy
If the hub allows circuit components to enter sleep mode to reduce power consumption, then energy regulations are met, but it is not easy to return to wake-up mode
Solution Approach 1:
The main control circuit acts as an intermediary between the external connection signal and the sleeping system circuit. It receives connection signals from USB devices and transmits wake-up signals to the system circuit, making the wake-up transition easy and reliable while the system circuit remains in low-power sleep mode.
Data Source
AI summary
An energy-saving hub is connected to an electronic device, an AC power source and a mobile device. The energy-saving hug includes a power supply interface, a power module, an upstream connector, a downstream connector, a main control circuit, and a system circuit. The power supply interface is used to connect to the AC power source, the power module is connected to the power supply interface, the upstream connector and the downstream are connected to the power module, and the main control circuit is connected to the power module and the upstream connector. The system circuit is connected to the upstream connector, the downstream connector and the main control circuit, wherein the system circuit is maintained in a sleep mode. When the energy-saving hub connects to the electronic device or the mobile device, the main control circuit transmits a wake-up signal to the system circuit to wake up the system circuit.