Current regulating device

A current regulation and power supply technology, which is applied in the field of dual power supply power supply devices, can solve problems such as current imbalance, input power supply stop power supply, etc., and achieve the effect of improving power transmission capability
CN101771273BActive Publication Date: 2015-05-20ASUSTEK COMPUTER INC
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ASUSTEK COMPUTER INC
Publication Date
2015-05-20

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Abstract

The invention discloses a current regulating device, comprising a first switch, a second switch, a first current detection circuit, a second current detection circuit and a control circuit. The first current detection circuit and the second current detection circuit detect the current on respective power source path; and the control circuit controls the on-off state of the first switch and the second switch on the power source path according to a detection signal, thereby the balance of the circuit current can be regulated.
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Description

technical field

[0001] The invention relates to a power supply device with dual power sources, and in particular to a current regulating device with dual power sources. Background technique

[0002] Generally, the power supply mode of the computer peripheral products is to harvest power through the USB interface of the computer or the power over Ethernet (POE) mode.

[0003] According to the specification, the maximum power of the USB interface can only provide about 2.5 watts, and the maximum power of the general POE can only provide about 15 watts. If the wattage consumed by the product itself is greater than the maximum wattage that the power supply can provide, then a bottleneck will appear in the design of the product. In order to make the product have a greater input wattage, design engineers usually use two USB ports or two POE ports to be connected in parallel to make the voltage difference between the two power sources as close as possible to avoid power supply. P...

Claims

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