Intelligent multistage variable-power switch power supply device
A switching power supply and intelligent technology, which is applied in the direction of output power conversion devices, electric light sources, lighting devices, etc., can solve the problems of power supply efficiency reduction, etc., and achieve the effect of improving service life, improving life, and small ripples
Inactive Publication Date: 2010-09-22
夏竹兵
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a power topology that can automatically select a suitable power topology according to the load change to reduce the impact of load changes on the power supply efficiency and improve the power supply efficiency. High-efficiency intelligent multi-level variable power switching power supply device
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[0014] Such as image 3 As shown, in the intelligent multi-stage variable power switching power supply device of the present embodiment, the output of the bridge rectifier 1 is connected to the input of the EMI filter 2, and the output of the EMI filter 2 is connected to the single chip microcomputer 4 through the standby topology 3, and The output of the EMI filter 2 is connected to the 20W power topology 15 through the first MOSFET switch 12, connected to the 80W power topology 16 through the second MOSFET switch 13, and connected to the 300W power topology 17 through the third MOSFET switch 14, The standby topology 3 is sequentially connected to the load 5 through the standby current sensor 7 and the load detection circuit 6, and the 20W power topology 15, the 80W power topology 16, and the 300W power topology 17 are respectively passed through the first The current sensor 18, the second current sensor 19, and the third current sensor 20 are connected to the load 5, the out...
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The invention relates to an intelligent multistage variable-power switch power supply device. In the device, the output of a bridge rectifier is connected with the input of an EMI filter; the output of the EMI filter is connected with a signlechip through a standby topology and is connected with two or more different power topologies through different MOSFET switches respectively; the standby topology is connected with a load through a standby current sensor and a load detection circuit in turn; the different power topologies are connected with loads through respective corresponding working current sensors; and the output of standby current sensor, the outputs of the working current sensors and the output of the load detection current are connected with the input of the singlechip respectively, and the output of the singlechip is connected with the inputs of a plurality of MOSFET switches to control the on and off states of the different power topologies. The intelligent multistage variable-power switch power supply device of the invention can automatically select a proper power topology according to the change of the loads, reduce the influences of load change on power supply efficiency and improve the power supply efficiency.
Description
technical field [0001] The invention relates to a switching power supply device, in particular to an intelligent multi-stage variable power switching power supply device. Background technique [0002] As the society pursues energy conservation and emission reduction, and people pursue low-carbon life, the era of extensive electricity consumption is coming to an end, and it is replaced by precise electricity-saving life. In the past, people never paid much attention to the power of household appliances, nor did they care much about the efficiency of lighting circuits, but in the era of LED lighting, the low power consumption and high efficiency of LEDs will be widely used. [0003] Since the best applicable environment of LED is low-voltage DC, the voltage of a single LED is 3.0V DC to 5V DC; while the current social power supply is 220VAC, so each lamp head needs to convert 220VAC into low-voltage DC (12V DC or 24V DC) ; However, although the power supply efficiency of a la...
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IPC IPC(8): H02M7/217H02M1/44
CPCY02B70/16H02M2001/0032H05B33/0815Y02B20/348Y02B20/30Y02B70/10H05B45/3725H02M1/0032
Inventor 夏竹兵
Owner 夏竹兵