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Power supply soft start control method and device

A technology of power supply and power output, which is applied in the direction of output power conversion devices and electrical components, and can solve problems such as large overshoot voltage and device failure

Active Publication Date: 2020-12-18
LAUNCH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this application is to provide a power supply soft-start control method and device, aiming to solve the problem of large overshoot voltage in the traditional power supply mode, which leads to the failure of devices in the load

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  • Power supply soft start control method and device
  • Power supply soft start control method and device
  • Power supply soft start control method and device

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Embodiment Construction

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application 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 application, and are not intended to limit the present application.

[0053] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0054] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and oth...

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Abstract

The invention provides a power supply soft start control method and device. A power supply supplies power to a load through an electronic switch, and the power supply soft start control method comprises the steps that when the peak value of overshoot voltage output by the power supply is larger than or equal to safe working voltage of the load, the electronic switch is controlled to be continuously switched on and switched off for target times and then kept switched on; thus, the average current drawn by the load from the power supply gradually rises, the average voltage of the load graduallyrises from 0 to the rated voltage, and the situation that the load is damaged due to the fact that the load draws large current from the power supply at a time, and consequently the output voltage ofthe power supply overshoots is avoided. The problem that in a traditional power supply mode, overshoot voltage is large, and consequently devices in loads fail is solved.

Description

technical field [0001] The present application belongs to the technical field of soft start control, and in particular relates to a method and device for soft start control of a power supply. Background technique [0002] At present, the traditional load power supply method generally adopts the one-time connection method, that is, the power supply path between the power supply and the load is closed at one time. However, if the power supply includes a voltage conversion circuit, the one-time connection method will cause DC / DC The output voltage of the conversion circuit overshoots, and when the peak value of the overshoot voltage exceeds the maximum operating voltage of the device in the load, the device fails. [0003] Therefore, in the traditional power supply mode, there is a problem that the overshoot voltage is relatively large, which leads to the failure of devices in the load. Contents of the invention [0004] The purpose of the present application is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02M1/32
CPCH02M1/36H02M1/32
Inventor 刘均郝书芳
Owner LAUNCH TECH CO LTD