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Voltage and current control circuit and integrated chip

A voltage, current, and control circuit technology, which is applied to battery circuit devices, circuit devices, collectors, etc., can solve the problem of high cost

Pending Publication Date: 2022-03-18
上海慧能泰半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires three pins connected to external circuits, and requires two sets of external compensation components, and the cost is high

Method used

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  • Voltage and current control circuit and integrated chip
  • Voltage and current control circuit and integrated chip
  • Voltage and current control circuit and integrated chip

Examples

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Embodiment Construction

[0039] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this 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 creative efforts fall within the protection scope of this application.

[0040] Please refer to figure 1 , figure 1 A schematic structural diagram of a voltage and current control circuit provided in an embodiment of the present application. Such as figure 1 As shown, the voltage and current control circuit 10 includes a first output terminal VOUT1 , a second output terminal VOUT2 , a current loop 100 and a voltage loop 200 . ...

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Abstract

The invention discloses a voltage and current control circuit and an integrated chip. The voltage and current control circuit comprises a first output end, a second output end, a current loop and a voltage loop. The current loop comprises a current sampling unit, a first error amplification unit and a first transconductance unit. The voltage loop comprises a voltage dividing unit, a second error amplification unit and a second transconductance unit. The current sampling unit is used for obtaining first current. The first error amplification unit is used for outputting a first voltage according to the difference between the first current and the reference current. The first transconductance unit is used for outputting a second current according to the first voltage. The voltage dividing unit is used for outputting a second voltage and outputting a third voltage according to the second current. The second error amplification unit is used for outputting a fourth voltage and a fifth voltage. And the second transconductance unit is used for outputting a third current according to the fourth voltage and outputting a fourth current according to the fifth voltage. In this way, pins connected with an external circuit can be reduced, and the cost is low.

Description

technical field [0001] The present application relates to the technical field of electronic circuits, in particular to a voltage and current control circuit and an integrated chip. Background technique [0002] In the case of limited battery capacity of mobile devices, fast charging technology has become a new method to improve user experience. In recent years, various technical solutions for USB fast charging have developed rapidly, and various charging protocols have appeared successively, such as Qualcomm Q / QC3 / QC4 protocol, Huawei FCP / SCP protocol, Apple Apple protocol and other charging specifications. Among them, a common feature of these protocols is that they all adjust the appropriate charging voltage and charging current according to the state of the device. [0003] At present, it is usually necessary to use two parallel loops to control voltage and current respectively. However, this method requires three pins connected to external circuits, and requires two s...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/007182H02J7/00714
Inventor 孙彪赵俊杰欧应阳
Owner 上海慧能泰半导体科技有限公司
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