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Low-voltage power supply generation circuit and power integrated circuit

A technology for generating circuits and low-voltage power supplies, which can be used in high-efficiency power electronic conversion, electrical components, and adjustment of electrical variables. Effect of Range Voltage Output

Pending Publication Date: 2020-05-08
SHENZHEN NSIWAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-voltage power generation circuit, which aims to solve the problems of insufficient load capacity and high power consumption in traditional low-voltage power generation circuits

Method used

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  • Low-voltage power supply generation circuit and power integrated circuit
  • Low-voltage power supply generation circuit and power integrated circuit
  • Low-voltage power supply generation circuit and power integrated circuit

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] The first aspect of the embodiments of the present invention provides a low-voltage power genera...

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PUM

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Abstract

The invention discloses a low-voltage power supply generation circuit and a power supply integrated circuit. The low-voltage power supply generation circuit comprises a power supply input port, a power supply output port, a constant-voltage output circuit, a voltage sampling circuit, a low-voltage band-gap reference circuit, a switch control circuit and a switch circuit. When an input voltage is low, the switch control circuit makes the switch circuit be conducted; the power input port is directly connected with the power output port so that the voltage output by a power supply is equal to theinput voltage; there is no resistive element to consume electric energy, and power consumption is reduced; and when the input voltage is large, the constant voltage output circuit outputs a preset voltage to the power output port, wide-range voltage output is achieved, and a loading capacity is improved.

Description

technical field [0001] The invention belongs to the technical field of switching power supplies, and in particular relates to a low-voltage power supply generating circuit and a power supply integrated circuit. Background technique [0002] In order to save chip costs, when integrated circuits are used in high-voltage fields (for example, greater than 30V), BCD technology is generally adopted. When designing circuits, it is often necessary to design a low-voltage power supply. With the rapid development of electronic products, the application field is becoming more and more The wider it is, in some fields it will be necessary to use the input power supply voltage to enable the entire system to operate normally under very low working conditions. The current solution is mainly to connect directly to the clamping circuit through a resistor. This method The structure is simple, but the loading capacity is not enough and the power consumption is large. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): H02M1/00H02M3/00H02M3/156H02M1/08
CPCH02M1/00H02M3/00H02M3/156H02M1/08H02M1/0048Y02B70/10
Inventor 付凌云邓鑫
Owner SHENZHEN NSIWAY TECH