Adaptive switching power supply for input
A technology of adaptive switching and switching circuits, applied in the field of power supply, can solve problems such as difficulty in achieving optimal efficiency, reduction in efficiency, and increase in loss
Inactive Publication Date: 2016-12-07
ZTE CORP
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Problems solved by technology
For high-voltage DC input, the solution to achieve optimal efficiency is to directly use the first-level DC / DC conversion to output, that is, the above-mentioned compatible solution introduces a PFC conversion branch, resulting in increased loss and reduced efficiency under high-voltage DC input.
[0004] Therefore, the AC power supply is compatible with high-voltage DC input. Although the application range of the power supply has been expanded, it is difficult to achieve the optimal efficiency under different input systems under the condition of ensuring that the area and cost do not change much.
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[0041] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0042] The invention provides an input adaptive switching power supply.
[0043] refer to figure 1 , figure 1 A schematic structural diagram of a preferred embodiment of the input self-adaptive switching power supply for the present invention.
[0044] In a preferred embodiment of the present invention, the input adaptive switching power supply of the present invention includes an input interface 10, a control circuit 20, a switching circuit 30, and a DC / DC converter 40; the switching circuit 30 includes a PFC converter 31, and the switching The circuit 30 is connected between the input interface 10 and the DC / DC converter 40, the input end of the control circuit 20 is connected to the input interface 10, the output end of the control circuit 20 is connected to the switching circuit 30's console connection.
[0045]...
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The invention discloses an adaptive switching power supply for input. The adaptive switching power supply for the input comprises an input interface, a control circuit, a switching circuit and a DC / DC converter, wherein the switching circuit comprises a PFC converter; the control circuit is used for sampling a voltage signal connected to the input interface and outputting a corresponding control signal to the switching circuit according to the voltage signal; the input interface is used for connecting an AC or high-voltage DC voltage signal; and the switching circuit is used for gating the voltage signal connected to the input interface according to the control signal and directly outputting the voltage signal to the DC / DC converter for voltage transformation or firstly outputting the voltage signal to the PFC converter for voltage transformation and then outputting the voltage signal to the DC / DC converter for voltage transformation. By the adaptive switching power supply for the input disclosed by the invention, the power supply loss can be reduced, the power supply efficiency is improved, and the optimum efficiency of the power supply under different input systems is achieved.
Description
technical field [0001] The invention relates to the technical field of power supplies, in particular to an input self-adaptive switching power supply. Background technique [0002] The AC power supply with single input interface is compatible with high-voltage DC input, so it can be applied not only in AC-powered computer room equipment, but also in high-voltage DC input computer room equipment, which expands the application range of AC power supply. [0003] In response to the above requirements, two transformation schemes can be designed inside the power supply for alternating current (i.e. AC) and high-voltage direct current (i.e. DC) input. The isolated AC / DC conversion is used for AC input, and the isolated DC / DC conversion is used for DC input. , so as to achieve the optimal efficiency under different input systems, but the area of the power supply realized by this scheme is large and the cost is high, which is generally not feasible in engineering. A commonly used ...
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IPC IPC(8): H02M1/10
CPCH02M1/10
Inventor 周平森何维张滨
Owner ZTE CORP