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Charging chip

A charging chip and charging control technology, which is applied in the field of circuits, can solve the problems of easy damage to the charging chip and poor voltage resistance of the charging chip, and achieve the effects of low cost, large forward voltage resistance, and small area

Active Publication Date: 2019-11-12
SHANGHAI AWINIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the charging chip of existing portable electronic products has poor voltage withstand capability, which makes the charging chip easily damaged

Method used

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0034] In the following description, a lot of specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, and those skilled in the art can do without violating the connotation of the application. By analogy, the present application is therefore not limited by the specific embodiments disclosed below.

[0035] Secondly, the present applicat...

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Abstract

The embodiment of the invention discloses a charging chip. The input terminal of a power supply module is electrically connected to a common terminal of a first transistor and a second transistor, thefirst transistor thus exists between the input terminal of the power supply module and the input terminal of the charging chip, direct electric connection with the input terminal of the charging chipdoes not happen, and thus, when signals inputted from the input terminal of the charging chip include a forward high-voltage pulse signal, the forward high-voltage pulse signal passes through the first transistor and then reaches the input terminal of the power supply module, the first transistor is used to perform voltage dividing on voltage signals inputted from the input terminal of the charging chip, the voltage applied to the power supply module is thus reduced, the power supply module can have a smaller area and can also have a larger forward voltage withstanding ability, and thus, in acondition with the power supply module having the same voltage withstanding ability, the charging chip has a smaller area and a lower cost while the charging chip meets the same voltage withstandingrequirements.

Description

technical field [0001] The present application relates to the field of circuit technology, in particular to a charging chip. Background technique [0002] With the development of electronic technology, the functions of portable electronic products are becoming more and more complex, and their styles are becoming more and more portable. This requires lithium battery charging and / or system power supply solutions for electronic products to meet the needs of lithium battery charging or system power supply. Under the premise of the accuracy of current and supply voltage, the peripheral components are minimized. Therefore, the charging chips of electronic products are becoming more and more miniaturized to meet the development needs of portable electronic products. However, the charging chip of the existing portable electronic products has a poor withstand voltage capability, so that the charging chip is easily damaged. Contents of the invention [0003] In order to solve the a...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/007
Inventor 董渊宋志军吴传奎程剑涛杜黎明孙洪军乔永庆
Owner SHANGHAI AWINIC TECH CO LTD