USB Power Management Controller Dynamic Voltage Regulation
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Solution Overview
Problem
Traditional DC jacks in consumer electronic products have a large number of internal components and occupy significant circuit area, failing to meet environmental protection requirements, necessitating an improvement in power transmission modes between consumer electronic products and power supply devices.
Innovation Solution
A power management device with a controller and memory that dynamically adjusts voltage supplied to loads and USB devices based on power information and demand, using voltage regulators to optimize power mode and compatibility, replacing the traditional DC jack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional DC jack is used for power supply, then power transmission is reliable, but device complexity and circuit area increase
Solution Approach 1:
The USB connector is designed to serve multiple functions: it acts as both a data communication interface and a power supply interface. By integrating power transmission capability into the existing USB connector, the patent eliminates the need for separate DC jack components while maintaining reliable power transmission through the standardized USB power protocol.
Solution Approach 2:
The patent combines the power supply function with the data communication function by using a single USB connector for both purposes. This merging of functions reduces the total number of components, simplifies the circuit design, and decreases the overall device complexity while ensuring reliable power delivery through the unified interface.
2Reliability
If traditional DC jack is used for power supply, then power transmission is stable, but circuit area occupied increases
Solution Approach 1:
The USB connector is designed to serve multiple functions: it acts as both a data communication interface and a power supply interface. By integrating power transmission capability into the existing USB connector, the patent eliminates the need for separate DC jack components while maintaining reliable power transmission through the standardized USB power protocol.
Solution Approach 2:
The patent combines the power supply function with the data communication function by using a single USB connector for both purposes. This merging of functions reduces the total number of components, simplifies the circuit design, and decreases the overall device complexity while ensuring reliable power delivery through the unified interface.
3Device complexity
If USB connector is used for power supply instead of DC jack, then device complexity and circuit area are reduced, but power transmission compatibility needs improvement
Solution Approach 1:
The controller dynamically adjusts the power transmission parameters based on the connected device's requirements. It negotiates power delivery parameters in real-time, adapting the voltage and current levels to match the specific needs of each USB device, thereby ensuring broad compatibility while using the simplified USB connector interface.
Solution Approach 2:
The patent implements dynamic parameter adjustment by modifying voltage and current levels based on the connected device's power requirements. The controller can change power delivery parameters such as voltage (5V, 12V, etc.) and current limits to accommodate different USB devices, ensuring wide compatibility without requiring multiple specialized connectors.
4Productivity
If dynamic power adjustment is implemented, then power allocation efficiency is improved, but control complexity increases
Solution Approach 1:
The controller implements feedback mechanisms by monitoring the power requirements of connected USB devices and adjusting power delivery accordingly. It receives power demand information from connected devices, processes this information, and dynamically modifies power transmission parameters to optimize power allocation efficiency while maintaining manageable control complexity through automated negotiation protocols.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances compatibility between power supply devices, loads, and USB devices by dynamically allocating power, improving power transmission efficiency and aligning with environmental protection standards.
Implementation Method 1
an output end of the first voltage regulator is coupled to a power end of the load
Implementation Method 2
the controller controls at least one second voltage regulator of the consumer electronic product according to the power mode to supply power to the at least one USB device
Data Source
AI summary
A power management device and a consumer electronic product are provided. The power management device is for the consumer electronic product. The power management device includes a memory and a controller. The memory stores a power information of a load of the consumer electronic product. An input end of the first voltage regulator is coupled to a power pin of an upstream USB connector, and an output end of the first voltage regulator is coupled to a power end of the load. When USB device is connected to a downstream USB connector of the consumer electronic product, the controller obtains a power demand from the USB device, the controller determines whether to change a power mode of the upstream USB connector according to the power information and the power demand, and the controller controls the second voltage regulator according to the power mode to supply power to the USB device.