A mobile terminal, a dcdc power supply device and a dcdc power supply circuit thereof

A technology of power supply circuit and power supply module, which is applied in the field of electronics and can solve the problems of inaccurate change of load terminal voltage, time delay, and increasing the length of feedback traces.

Active Publication Date: 2019-03-01
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make the load terminal voltage meet the demand, the DCDC power supply terminal needs to obtain the load terminal voltage, and the traditional feedback power supply position is all at the DCDC power supply terminal, which makes the detected load terminal voltage change inaccurate
[0003] In order to accurately detect the voltage change of the load terminal, the current existing technology sets the feedback power-taking position close to the load terminal. However, because this method increases the length of the feedback trace, when the current consumed by the load suddenly becomes larger or smaller , the time when the voltage change at the load terminal is fed back to the DCDC power supply terminal will be greatly delayed, thereby reducing the transient response speed of the DCDC power supply circuit

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
  • A mobile terminal, a dcdc power supply device and a dcdc power supply circuit thereof
  • A mobile terminal, a dcdc power supply device and a dcdc power supply circuit thereof
  • A mobile terminal, a dcdc power supply device and a dcdc power supply circuit thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] 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 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.

[0019] figure 1 The module structure of the DCDC power supply circuit provided by the embodiment of the present invention is shown. For the convenience of description, only the parts related to the present invention are shown, and the details are as follows:

[0020] As a preferred embodiment of the present invention, the DCDC power supply circuit 1 is connected to an electric load 2 and includes a DCDC power supply module 10 and an amplification feedback module 12 .

[0021] Wherein, the output end of the DCDC power supply module 10 is connected with the input end of the electric load 2 and the i...

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 is applicable in the technical field of electron and provides a mobileterminal, a DC (direct current) DC power supply device, and a DCDC power supply circuit thereof. The DCDC power supply circuit comprises a DCDC power supply module and an amplification feedback module; and the amplification feedback module acquires input voltage of electricity load, performs phase advanced processing, amplification processing and voltage-dividing processing on the input voltage when the input voltage fluctuates, and outputs feedback voltage to the DCDC power supply module, and the DCDC power supply module adjusts the input voltage according to the feedback voltage. In the invention, when the input voltage fluctuates, the input voltage is subjected to phase advanced processing and amplification processing, so that delay of feedback routing is counteracted, the adjustmentstrength on load transient fluctuation by the DCDC power supply circuit can be enhanced, and the transient response speed of the DCDC power supply circuit is increased.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a mobile terminal, a DCDC power supply device and a DCDC power supply circuit thereof. Background technique [0002] The DCDC power supply circuit refers to a power supply circuit whose input is direct current (Direct Current, DC) and whose output is also direct current. In actual engineering, the distance between the output end of the DCDC power supply circuit and the load end is relatively long, and the voltage drop of the printed circuit board (Printed Circuit Board, PCB) has reached a non-negligible level, especially when the output of the DCDC power supply circuit When the current is large, the PCB trace voltage drop can reach several volts, which will make the voltage at the load terminal lower than the output terminal voltage of the DCDC power supply circuit. In order to make the load terminal voltage meet the demand, the DCDC power supply terminal needs t...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/625
CPCG05F1/625
Inventor 金文锋
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap