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Programming circuit for antifuse

An anti-fuse, programming voltage technology, applied in electronic switches, electrical components, pulse technology and other directions, can solve the problems of timing affecting anti-fuse programming, difficult to measure and control programming voltage, large layout area, etc., to prevent insufficient programming Or over-burned, fast, and flexible effects

Active Publication Date: 2018-12-14
NO 47 INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this structure requires multiple charge pumps, and the layout area is large; on the other hand, the charge pump is integrated inside the circuit, which makes it difficult to measure and control the actual programming voltage provided; in addition, the charge pump startup delay also affects the antifuse programming. timing

Method used

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  • Programming circuit for antifuse
  • Programming circuit for antifuse
  • Programming circuit for antifuse

Examples

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] figure 1 A block diagram of an antifuse programming and burning circuit according to an embodiment of the present invention is schematically shown. As shown in the figure, the circuit diagram includes: switch voltage control circuit 1, adjustable voltage control circuit 2, switch tube and anti-fuse circuit 3, wherein: switch tube and anti-fuse circuit 3 are set to include NMOS switch tube and anti-fuse circuit Fuse; the switch voltage control circuit 1 is set to convert the power supply voltage into a constant 8V or 0V voltage for the switch tube and the antifuse circuit 3 through a digital circuit according to the collected data input signal; the adjustable voltage control circuit 2, It is set to select between multiple voltages through the digital circuit according to the collected data input signal, and is used to selectively provide the switch tub...

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PUM

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Abstract

The invention discloses a programmed burning device for an anti-fuse. The programmed burning device disclosed by the invention comprises a switching tube, a switching voltage control circuit and an adjustable voltage control circuit, wherein the switching tube is electrically connected with the anti-fuse; the switching voltage control circuit is connected with the switching tube and is used for providing switching voltage for the switching tube; and the adjustable voltage control circuit is connected with the switching tube and is used for providing different control voltages for the switching tube. The circuit disclosed by the invention is simple in structure, flexible to control and high in circuit speed, insufficient burning or excessive burning of the anti-fuse is avoided, the programming quality of the anti-fuse is improved, and the programming reliability of the anti-fuse is enhanced.

Description

technical field [0001] The invention relates to a programming and burning circuit, in particular to a programming and burning circuit for antifuse. Background technique [0002] With the wide application of antifuse integrated circuits, the demand for antifuse products continues to increase. At present, such products mainly rely on imports. In order to break the pattern of foreign monopoly, the applicant has carried out anti-fuse technology research since 2006 and conducted a large number of process tests, but the success rate of anti-fuse programming And the quality of programming has always been an important factor affecting the quality of the antifuse integrated circuit, and insufficient or excessive programming of the antifuse is the main factor affecting the success rate and quality of the programming of the antifuse. Among them, insufficient antifuse programming refers to the formation of large resistance and capacitance after programming, which affects the timing cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C16/10G11C16/12G11C16/34G11C16/04H03K17/687
Inventor 李瑞杜海军尹自强杨玉飞李倩林雨佳郭滨
Owner NO 47 INST OF CHINA ELECTRONICS TECH GRP
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