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Multi-port power supply device and operating method thereof

A technology of power supply and operation method, applied in the field of power supply device, can solve the problems of low charging power, power utilization efficiency of power supply device cannot be optimized, etc.

Pending Publication Date: 2021-12-14
VIA LABS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the protocol power (PDO or APDO) cannot be dynamically changed during the time the external USB device is connected to the power supply, the power utilization efficiency of the power supply cannot be optimized
[0004] Again, this external USB device may have a rated minimum charging power

Method used

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  • Multi-port power supply device and operating method thereof
  • Multi-port power supply device and operating method thereof
  • Multi-port power supply device and operating method thereof

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Embodiment Construction

[0020] As used throughout the present specification, including the claims, the term "coupled (or connected)" may refer to any means of connection, direct or indirect. For example, if it is described that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through other devices or certain A connection means indirectly connected to the second device. Terms such as "first" and "second" mentioned throughout the description of the present invention (including claims) are used to name components (elements), or to distinguish different embodiments or ranges, and are not used to limit the number of components The upper or lower limit of , nor is it used to limit the order of components. In addition, wherever possible, components / members / steps using the same reference numerals in the drawings and embodiments represent the sam...

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Abstract

The invention provides a multi-port power supply device and an operation method thereof. The multi-port power supply device comprises a power converter, a power switch, a current detection circuit, a voltage detection circuit, a control circuit and a plurality of USB connection ports. The power converter supplies power to the USB connection port through the current path. The control circuit judges whether the USB connection port is connected with the USB device or not according to the actual voltage of the current path. And under the condition that the USB connection port is not connected with the USB equipment, the control circuit cuts off the current path. Under the condition that the USB connection port is connected with the USB equipment, after a part of power of other USB connection ports is dynamically transferred to the USB connection port, the control circuit determines whether to conduct the current path or not according to the actual current of the current path.

Description

technical field [0001] The present invention relates to a power supply device, in particular to a power supply device with multiple connection ports and an operation method thereof. Background technique [0002] Generally speaking, when the power supply device provides power to an external USB device through a Universal Serial Bus (USB) connection port, the power supply device needs to perform voltage conversion according to the rated specification of the USB device. For example, the power supply device may include a controller supporting a Power Delivery (PD) protocol. Based on the PD protocol, the power supply device can send a power data object (Power Data Object, PDO) or an enhanced power data object (Augmented Power Data Object, APDO) to the external USB device to determine the protocol power. The PDO (or APDO) contains the information of the candidate output voltage and the candidate output current of the source terminal (source). The power supply device can send mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00032H02J7/00036H02J7/0036H02J7/0045H02J7/007H02J7/00712H02J7/00045H02J7/00714H02J7/007182G06F13/4282G06F1/266G06F1/28Y02D10/00H02J1/102H02J7/0013G06F2213/0042
Inventor 王泽祥颜圣贤张惠能
Owner VIA LABS INC
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