Method and circuit for confirming signal correctness and charging system using the circuit

一种正确性、电路的技术，应用在电路装置、电池电路装置、交换数据充电器等方向，能够解决无法确知讯号是否正确、电压失准、讯号不正确等问题

Inactive Publication Date: 2018-05-01
RICHTEK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under normal conditions, the voltage of node CC2 is equal to VA*R12 / (R11+R12); however, under abnormal conditions, when there is dust or dirt on the port connecting the electronic device 20 and the cable 70, it may cause a negative power supply Another conduction path between the transmission line 73 and the signal transmission line 72 is represented by a dashed resistor R13
As a result, the voltage of the node CC2 will be out of alignment, causing the signal provided from the electronic device 20 via the node CC2 to be incorrect.
The defect of this prior art is that the charging system 100 cannot know whether the signal provided by the electronic device 20 (power receiving end) via the node CC2 is correct or not.

Method used

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  • Method and circuit for confirming signal correctness and charging system using the circuit
  • Method and circuit for confirming signal correctness and charging system using the circuit
  • Method and circuit for confirming signal correctness and charging system using the circuit

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Embodiment Construction

[0023] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The drawings in the present invention are all schematic, mainly intended to show the functional relationship between each device and each component, as for the shape, size, and direction, they are not drawn according to the scale of the actual object.

[0024] Please refer to Figure 2A-2B and Figure 3A . Figure 2A-2B A schematic block diagram of a charging system according to an embodiment of the present invention is shown. Figure 3A Mark an embodiment of the charging system of the present invention when it is connected normally. Such as Figure 2A As shown, the charging system 200 of this embodiment includes a power supply terminal 10 , a cable 70 and a power receiving terminal 20 . The power supply terminal 10 and the power receiving terminal 20 ...

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PUM

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Abstract

The invention proposes a method and circuit for confirming the correctness of signals, and a charging system using the circuit. The method for confirming the correctness of the signal includes: providing a current through a time-dependent impedance circuit. The impedance of the time-dependent impedance circuit changes with time. At the first time point, the current passes through the time-dependent impedance circuit to generate a second A voltage, and at a second time point, the current passes through the time-varying impedance circuit to generate a second voltage, wherein the first voltage is different from the second voltage. If the relationship between the first voltage and the second voltage conforms to the default relationship, it is confirmed that the signal provided by the node coupled with the time-varying impedance circuit is correct.

Description

technical field [0001] The present invention relates to a method and circuit for confirming the correctness of signals and a charging system using the circuit, in particular to a method and circuit for confirming the correctness of signals through the voltage variation relationship, and a charging system using the circuit. Background technique [0002] Please refer to figure 1 , which shows a schematic block diagram of a prior art charging system. Such as figure 1 As shown, the prior art charging system 100 includes a power supply 10 , a cable 70 and an electronic device 20 . The power supply 10 and the electronic device 20 are coupled to each other via a cable 70 . The power supply 10 includes a power converter 11 and a control circuit 12 , wherein the control circuit 12 controls the operation of the power converter 11 . The electronic device 20 includes a load 21 . The cable 70 includes a positive power transmission line 71 , a negative power transmission line 73 and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00G01R19/00
CPCG01R31/69H02J7/00038H02J7/00036H02J7/00047H02J7/007
Inventor 朱益杉尹治平杨世仁
Owner RICHTEK TECH
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