A switching power supply

A technology of switching regulated power supply and switching circuit, which is used in electrical components, regulating electrical variables, and output power conversion devices, etc., can solve the problems of narrow input voltage range and output current limitation of regulated power supply.

Active Publication Date: 2019-03-29
SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a switching regulated power supply, aiming to solve the problem of narrow input voltage range and limited output current of the regulated power supply in the prior art

Method used

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  • A switching power supply
  • A switching power supply
  • A switching power supply

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] The specific realization of the present invention is described in detail below in conjunction with specific embodiment:

[0030] figure 1 A schematic structural diagram of a switching regulated power supply provided by an embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are listed, and the details are as follows:

[0031] An embodiment of a switching regulated power supply is provided as an embodiment of the present invention, including:

[0032] Including: a filter circuit 101, a first switc...

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Abstract

The invention belongs to the field of power supplies, and provides a stabilized switching power supply. A switching type DC-DC voltage stabilizer power source is formed by independent electronic elements, a wide-input voltage range is provided, the work state of an overall circuit is automatically adjusted according to input voltage, the output voltage is stable and can be set by adjusting element parameters, and the output current is determined by the input end and a circuit element. A large current element can be selected to improve the current resistance of the circuit, and the feedback link of the circuit is simple and reliable in design. As no integrated chip is used, the situation that when the voltage of a circuit of an integrated chip is used, the current parameters are basically fixed is avoided.

Description

technical field [0001] The invention belongs to the field of power supplies, in particular to a switching power supply. Background technique [0002] As we all know, any electronic system needs a power supply, and most electronic products currently use DC / DC chips or low dropout regulators (low dropout regulators, LDOs) as power supplies to generate constant voltage sources for electronic systems. [0003] At present, DC / DC chips or LDO chips are mostly used, such as three-terminal voltage regulator 78 series or switching DC-DC voltage regulator chips, but in actual use, the input voltage range of 78 series chips such as 7812 is 15V ~ 17V, The maximum does not exceed 35V, and the output current does not exceed 1A. Other common chips such as LM2575-12 have an input voltage range of 15V to 40V, a typical output current of 1A, and a maximum of 3A. Therefore, the input voltage range of the regulated power supply using these chips is narrow. The output current is also limited by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/155
Inventor 周明杰张飞
Owner SHENZHEN OCEANS KING LIGHTING ENG CO LTD
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