Unlock instant, AI-driven research and patent intelligence for your innovation.

Isometric-ratio voltage reducing switch power source

A switching power supply, equal ratio technology, applied in the direction of electrical components, adjusting electrical variables, high-efficiency power electronic conversion, etc., can solve the problems of poor impact resistance, high heat, low power, etc., and achieve low cost of use, simple circuit structure, and high efficiency. Improved effect

Inactive Publication Date: 2012-05-30
SHENZHEN INVT ELECTRIC
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned shortcomings of the high-voltage equal-ratio step-down power supply in the prior art, such as low efficiency, high heat, low power, and poor impact resistance, the present invention provides a new equal-ratio step-down switching power supply, which is controlled by the main control chip. , control the on-off of the switch tube, use this soft switching technology to improve the overall efficiency of the power supply, reduce heat generation, increase output power, and enhance the ability to drive capacitive loads

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Isometric-ratio voltage reducing switch power source
  • Isometric-ratio voltage reducing switch power source
  • Isometric-ratio voltage reducing switch power source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] This embodiment is a preferred implementation mode of the present invention, and other principles and basic structures that are the same or similar to this embodiment are within the protection scope of the present invention.

[0022] Please see attached figure 2 , the present invention mainly includes an input filter module, a power conversion main module, an output filter module, an isolation drive module, a soft switch signal detection module, an auxiliary power supply module, a main control module, and an input and output voltage comparison module. In this embodiment, the input filter module, power conversion main module and output filter module constitute the main power loop, please refer to the attached image 3 , the main power circuit in this embodiment is the attached image 3 In the part A of the box, the input filter module is an input interface CN1, the positive and negative output lines of the input interface CN1 are connected with a filter capacitor C2, a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an isometric-ratio voltage reducing switch power source, which comprises an input filter module, a main power conversion module, an output filter module, an auxiliary power supply module and a main control unit. The input filter module is connected to an input end of the main power conversion module, the output filter module is connected to an output end of the main power conversion module which comprises a switch tube and a follow-current inductor in serial connection with each other, and the main control module is used for detecting output current of the follow-current inductor and controlling operation of the switch tube according to the output current of the follow-current inductor and powered by the auxiliary power supply module. By means of a soft switch circuit, efficiency is improved evidently, the isometric-ratio voltage reducing switch power source does not need to be serially connected with a large radiator of a voltage reducing circuit, and cost of products is reduced. A main output circuit is provided with the follow-current inductor, the problem that a serial voltage reducing power source drives a capacitive load is high in impact, the capacity of driving the capacitive load is improved evidently, and the isometric-ratio voltage reducing switch power source is simple in circuit structure.

Description

technical field [0001] The invention discloses a switching power supply, in particular to an equal-proportion step-down switching power supply. Background technique [0002] Transistors (or switching tubes) are commonly used switching devices in switching power supplies in the prior art. Due to the performance limitations of current transistors, the input voltage of switching power supplies is generally below 800Vdc. In order to solve the power supply problem of the high-voltage control circuit, it is generally necessary to step down the input high-voltage power supply first, and then supply power to the control circuit through the switching power supply. The step-down circuit of the current switching power supply generally uses the equal-ratio step-down technology, so that the control circuit can calculate the high-voltage input voltage value by collecting the relatively low voltage after the equal-ratio step-down. The high-voltage equal-ratio step-down power supply in the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02M3/28H02M3/337H02M1/36H02M3/338
CPCY02B70/1491Y02B70/10
Inventor 唐传明
Owner SHENZHEN INVT ELECTRIC