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An electronic label power rectification circuit

A power rectification and electronic label technology, applied in the field of circuits, can solve the problems of increasing design complexity and chip area, and achieve the effect of eliminating circuit area, small process dependence, and reducing chip area.

Active Publication Date: 2019-06-07
BEIJING SMARTCHIP SEMICON TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improvement scheme often needs to increase the design complexity and chip area in the case of better rectification performance

Method used

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  • An electronic label power rectification circuit
  • An electronic label power rectification circuit
  • An electronic label power rectification circuit

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Embodiment Construction

[0020] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Unless expressly stated otherwise, throughout the specification and claims, the term "co...

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Abstract

The embodiment of the invention provides an electronic tag power rectification circuit comprising: an energy acquisition circuit, a charge control circuit, a power detection circuit and an output voltage stabilizing capacitor. The first input end of the energy acquisition circuit is connected with a first antenna. The second input end of the energy acquisition circuit is connected with a second antenna. The output end of the energy acquisition circuit is connected with the input end of the charge control circuit. The first antenna and the second antenna do not output a high level at the same time. The control end of the charge control circuit is connected with the first antenna, the second antenna and the output end of the power detection circuit. The output end of the charge control circuit is connected with the first end of the output voltage stabilizing capacitor, and the power voltage. The input end of the power detection circuit is connected with the second terminal of the output voltage stabilizing capacitor; and the second end of the output voltage stabilizing capacitor is grounded.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to an electronic label power supply rectification circuit. Background technique [0002] The rectifier circuit is an indispensable module in the electronic label, and the rectifier circuit provides a stable DC power supply for the chip. A traditional rectifier circuit generally includes a rectifier bridge, a high-voltage stabilizing capacitor, a voltage regulating circuit, a low-voltage stabilizing capacitor, and the like. Since the amplitude of the AC voltage obtained by the tag varies with the distance (magnetic field strength) from the card reader, the range of the DC voltage output by the rectifier bridge is wide, and the input voltage range of the voltage adjustment circuit is required to be high. The circuit design is complex and the circuit characteristics vary greatly with temperature and process. [0003] At present, there are many schemes to optimize the label power rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/07H02J5/00H02J7/00
CPCG06K19/0701H02J5/005H02J7/025
Inventor 符令何洋胡毅王小曼赵东艳王于波张海峰
Owner BEIJING SMARTCHIP SEMICON TECH CO LTD
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