Power supply soft start circuit with switch and power supply module

A technology of soft start circuit and power supply, which is applied in the direction of electrical components, adjustment of electric variables, output power conversion devices, etc., can solve the problem of uncontrollable start process of soft start circuit, and achieve the effect of enhancing safety

Pending Publication Date: 2021-11-09
CREATING CHANGE THROUGH TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power supply soft-start circuit and a power module with a switch to solve the problem that the start-up process of the existing soft-start circuit is uncontrollable

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  • Power supply soft start circuit with switch and power supply module

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Embodiment Construction

[0017] 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 specific 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.

[0018] see figure 1 As shown, the embodiment of the present invention provides a soft start circuit for a power supply with a switch. The soft start circuit for a power supply with a switch mainly includes an energy storage capacitor unit, a switch tube Q1, a mechanical switch S1, a triode Q2, a regulator tube D2 and The first capacitor C8. The energy storage capacitor unit provides energy supply for the subsequent system, and the energy storage capacitor unit includes a fourth capacitor C3, a fifth capacitor C4 and a sixth capacitor C5 connected in parallel.

[0019] Specifically, one o...

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Abstract

The invention provides a power supply soft start circuit with a switch and a power supply module. The power supply soft start circuit with the switch comprises an energy storage capacitor unit, a switch tube, a mechanical switch, a triode, a voltage-regulator tube and a first capacitor, wherein one path of output of a power supply is connected with an S pole of the switch tube, and a D pole of the switch tube is connected with the energy storage capacitor unit; the other path of output of the power supply is respectively connected with the energy storage capacitor unit and the first capacitor through the mechanical switch; one end of the first capacitor is connected with a base electrode of the triode through the voltage-regulator tube, and the other end of the first capacitor is connected with an emitting electrode of the triode; and the emitting electrode of the triode is grounded, and the collecting electrode of the triode is connected with the G pole of the switch tube. The power supply soft start circuit with the switch not only can realize the soft start function, but also has the controllability of the soft start function, and can enhance the safety of the power supply circuit.

Description

technical field [0001] The present invention relates to the technical field of power supply circuits, more specifically, to a power supply soft-start circuit with a switch and a power supply module including the power supply soft-start circuit with a switch. Background technique [0002] The existing soft-start circuit is used to reduce the surge current when the power supply is started, so that the output voltage rises slowly and reduces the impact on the input power supply. However, the functions of these current soft-start circuits are not perfect. For example, the soft-start process is uncontrollable. When the input or output fails, the connection between the two cannot be disconnected, which will cause safety problems. [0003] Therefore, it is necessary to provide a new technical solution to solve the problem that the starting process of the existing soft start circuit is uncontrollable. Contents of the invention [0004] The object of the present invention is to pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36H02M3/156
CPCH02M1/36H02M3/1563
Inventor 金帅邹宇李思阳
Owner CREATING CHANGE THROUGH TECH
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