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Direct-current output switching power supply

A switching power supply, DC output technology, applied in the direction of converting DC power input to DC power output, output power conversion devices, electrical components, etc., can solve problems such as current power limitation, inability to output voltage, current and power, etc.

Pending Publication Date: 2020-03-27
HANGZHOU YOZEA ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] DC output switching power supply is a power supply device that uses modern electronic technology to control the time ratio of switching transistor on and off to maintain a stable output DC voltage. In the existing DC switching power supply, due to the limited current power that can be output, Unable to output a wide range of voltage, current and power

Method used

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Embodiment Construction

[0018] Such as figure 1 , figure 2 As shown, a DC output switching power supply includes a switching control chip I, a rectification filter circuit II, a starting circuit III, a voltage feedback sampling circuit IV, a current feedback protection circuit V, a high frequency transformer VI, an output rectification circuit VII and an auxiliary power supply circuit VIII. Described switch control chip 1 is IW1816 chip. The current feedback protection circuit V is connected in parallel with the switch control chip I; the input terminal of the rectification filter circuit II is connected to the AC input voltage, and the output terminal is connected to the input terminal of the starting circuit III and the switch control chip I, and the AC The input voltage becomes a DC voltage after being rectified and filtered by the rectifying and filtering circuit II, the starting circuit III is connected to the switch control chip I; the input terminal of the high-frequency transformer VI is c...

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Abstract

The invention relates to a direct-current output switching power supply which comprises a switch control chip, a rectifying and filtering circuit, a starting circuit, a voltage feedback sampling circuit, a current feedback protection circuit, a high-frequency transformer and an output rectifying circuit. The current feedback protection circuit is connected with the switch control chip in parallel;the input end of the rectifying and filtering circuit is connected with alternating-current input voltage, the output end of the rectifying and filtering circuit is connected with the input end of the starting circuit and the switch control chip, the alternating-current input voltage is converted into direct-current voltage after being rectified and filtered by the rectifying and filtering circuit, and the starting circuit is connected with the switch control chip; the input end of the high-frequency transformer is connected with the switch control chip, and the output end of the high-frequency transformer is connected with the input end of the voltage feedback sampling circuit and the input end of the output rectifying circuit; the output end of the voltage feedback sampling circuit is connected with the switch control chip; and the output rectifying circuit outputs the direct-current voltage. The direct-current output switching power supply can output voltage, current and power in awide range.

Description

technical field [0001] The invention relates to the technical field of switching power supplies, in particular to a switching power supply with direct current output. Background technique [0002] DC output switching power supply is a power supply device that uses modern electronic technology to control the time ratio of switching transistor on and off to maintain a stable output DC voltage. In the existing DC switching power supply, due to the limited current power that can be output, It cannot output a wide range of voltage, current and power. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a DC output switching power supply capable of outputting a wide range of voltage, current and power. [0004] In order to solve the above-mentioned technical problems, a kind of DC output switching power supply provided by the present invention includes a switch control chip, a rectification filter circuit, a start-up circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33523
Inventor 陈谷峰聂代文
Owner HANGZHOU YOZEA ELECTRONICS
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