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Dynamic regulation circuit for current-limiting output

A dynamic adjustment and current limiting technology, which is applied to emergency protection circuit devices, circuit devices, and electric variable adjustments for limiting overcurrent/overvoltage, and can solve unstable power supply systems, unreasonable setting of output current limiting points, Problems such as loss of USBHost port function, etc., to achieve the effect of maximizing functions

Active Publication Date: 2019-05-14
TP-LINK
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] However, if the setting of the output current limit point is unreasonable when the load capacity of the power supply equipment is unknown, the power supply system will still be unstable, so the problem of instability of the power supply system cannot be completely solved; and in the case of known power supply equipment load capacity If you disable or fix the current-limited output, some functions of the USB Host port will be lost.

Method used

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  • Dynamic regulation circuit for current-limiting output
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  • Dynamic regulation circuit for current-limiting output

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] The embodiment of the present invention provides a current-limited output dynamic adjustment circuit, see figure 1 As shown, it is a schematic structural diagram of a preferred embodiment of a current-limited output dynamic adjustment circuit provided by the present invention, the circuit is used to be connected between the power supply device and the power receiving device of the power supply system; the circuit includes a control module 100. On-load test m...

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Abstract

The invention discloses a dynamic regulation circuit for a current-limiting output. The circuit is used to be connected between the power supply equipment and the power receiving equipment of a powersupply system. The circuit comprises a control module, a test module with a load, a first voltage / current detection module, a switch module, a second voltage / current detection module and a current-limiting regulation module. By use of the technical scheme of the invention, according to the real-time power consumption of the power receiving equipment, the current-limiting output of a USB (Universal Serial Bus) Host port can be dynamically regulated, the function of the USB Host port is maximized, and a power supply system is guaranteed to stably operate.

Description

technical field [0001] The invention relates to the technical field of current-limiting circuits, in particular to a dynamic adjustment circuit for current-limiting output. Background technique [0002] For a power supply system with a USB (2.0 / 3.0) Host port, when the load capacity of the power supply device (such as a power adapter) of the power supply system is small, it is easy for the USB Host port of the powered device to supply power to the outside, causing the power supply system to generate power. Instability problems such as restarting or crashing. [0003] In view of the above problems, the solutions provided by the prior art are generally divided into two types: the first is to directly set the output current limit point when the load capacity of the power supply equipment is unknown; the second is to directly set the output current limit point when the load capacity of the power supply equipment is known. Next, disable or fix current-limited output for the USB ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/573H02H9/02
Inventor 刘洋杜晓光
Owner TP-LINK
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