USB Power Supply Delay Control for Multi-Voltage Output
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Solution Overview
Problem
Type-C USB PD devices face high costs due to multiple power converters and cannot simultaneously supply different voltages to multiple electronic devices without risking damage to devices requiring different voltages, often defaulting to 5 volts when multiple devices are connected.
Innovation Solution
A universal serial bus power-supplying apparatus with a power convertor, power delivery communication controller, and switch units calculates communication times between devices to utilize a time difference for simultaneous power supply, allowing output of voltages greater than 5 volts to multiple devices using only one power convertor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power convertors are used to support multiple outputs for different electronic apparatuses, then the power supply can meet different voltage requirements (9, 12, 15 or 20 volts), but the cost of the power supply apparatus becomes very high
Solution Approach 1:
The patent implements a single power convertor that can universally supply power to multiple electronic apparatuses with different voltage requirements (5V, 9V, 12V, 15V, 20V) by dynamically adjusting its output based on communication timing. This multi-functional approach eliminates the need for multiple dedicated power convertors, significantly reducing cost while maintaining full voltage adaptability across different device types.
Solution Approach 2:
The patent changes the operating parameters of a single power convertor by adjusting its output voltage based on the communication time characteristics of different electronic apparatuses. By measuring and comparing communication times, the system determines which devices are connected and configures the power convertor to output appropriate voltages, enabling one convertor to replace multiple fixed-voltage convertors.
2Device complexity
If only one power convertor is used to reduce cost, then the cost is reduced, but the power supply can only uniformly output 5 volts to avoid damaging electronic apparatuses that request only 5 volts, even when multiple devices request higher voltages
Solution Approach 1:
The patent employs feedback through communication time measurement to determine the voltage requirements of connected devices. The power supply apparatus measures the communication time with each electronic apparatus, compares it against stored reference values, and uses this feedback information to configure the single power convertor to output the appropriate voltage for each device, preventing damage while enabling higher voltage output when needed.
Solution Approach 2:
The patent performs preliminary communication and measurement actions before power supply to identify which electronic apparatuses are connected and what voltages they require. By pre-determining the voltage requirements through communication time analysis, the system can safely configure the power convertor to output appropriate voltages before actually supplying power, avoiding device damage.
3Reliability
If the power supply uniformly outputs only 5 volts when multiple electronic apparatuses are connected, then device safety is ensured, but power supply efficiency and user satisfaction deteriorate when devices require higher voltages
Solution Approach 1:
The patent transforms the static 5V-only output into a dynamic voltage output system. The power supply apparatus continuously monitors communication times and dynamically adjusts the output voltage of the single power convertor based on the real-time configuration of connected devices. This dynamic adaptation maintains device safety through accurate voltage matching while maximizing power supply efficiency by providing the exact voltage each device requires rather than uniformly limiting to 5V.
Data Source
AI summary
A universal serial bus power-supplying apparatus with delay functions includes a power convertor, a power delivery communication controller and a plurality of switch units. The power delivery communication controller calculates a first communication time between the universal serial bus power-supplying apparatus and a first electronic apparatus. The power delivery communication controller calculates a second communication time between the universal serial bus power-supplying apparatus and a second electronic apparatus. The universal serial bus power-supplying apparatus utilizes a time difference between the first communication time and the second communication time to simultaneously supply power to the first electronic apparatus and the second electronic apparatus to drive the first electronic apparatus and the second electronic apparatus.