Multi-port input auxiliary power supply device, system and control method thereof

Abstract

The invention relates to a multi-port input auxiliary power supply device, a system and a control method thereof, the multi-port input auxiliary power supply device comprises a first auxiliary power supply and a second auxiliary power supply, the output of the first auxiliary power supply is used as one input of the second auxiliary power supply, and the second auxiliary power supply is used as a main power supply. The auxiliary power supply device has a plurality of power input sources, so that the reliability and flexibility of the auxiliary power supply device are improved. According to the control method of the multi-port input auxiliary power supply system, the output of the auxiliary power supply can be flexibly controlled according to the condition of each input source, so that the characteristics of independent input of the auxiliary power supply, coexistence of multi-source input and intelligent selection of the input source according to demand and consumption reduction are realized, and the application of the multi-input source is facilitated; and the problem that an input source of an existing auxiliary power supply is single is solved.

Description

technical field [0001] The invention relates to the technical field of power supply circuits, in particular to a multi-port input auxiliary power supply device, system and control method thereof. Background technique [0002] With the wide application of multi-port power input devices, it can meet the normal operation of the device and ensure the functional requirements of the actual output of the device under the condition of ensuring the existence of a certain input or the existence of multiple ports. It can work normally under all circumstances, so as to complete the detection and control of the device by the control unit in the device, ensure the work of power electronic conversion main circuit topology, and realize the uninterrupted power supply demand of the device. [0003] The existing auxiliary power supply methods include AC input power supply or DC input. The control methods include IC control and digital control. The circuit topology includes forward and flyback....

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Problems solved by technology

[0004] Based on the above situation of the prior art, the object of the present invention is to provide a multi-port input auxiliary power supply device, system and control method thereof, the multi-port input auxiliary power supply device has the functions of independent input, coexistence of multi-source input, and intelligent consumption reduction on demand. The feature of selecting the input source is beneficial to the application of multiple input sources, and solves the problem of single input source of the existing auxiliary power supply

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