Clamp voltage circuit

A clamping voltage and clamping circuit technology, applied in the field of clamping voltage circuits, can solve problems such as troublesome and no independent structure clamping voltage circuit, etc.

Active Publication Date: 2017-07-04
SHANGHAI HUALI MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the clamping voltage circuit in the prior art has the following disadvantages: 1. There is no clamping voltage circuit with an independent structure in the industry. 2. The industry usually obtains the required output through the adjustment of the characteristics and size of the MOS transistor and the adjustment of the circuit structure. Voltage range, more troublesome

Method used

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  • Clamp voltage circuit

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Embodiment Construction

[0022] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] figure 1 It is a schematic circuit diagram of a clamping voltage circuit of the present invention. like figure 1 As shown, a clamping voltage circuit of the present invention includes: an input circuit 10 , a low voltage clamping circuit 20 , a high voltage clamping circuit 30 , a sinking current source 40 and a pulling current source 50 .

[0024] Among them, the input circuit 10 ...

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Abstract

The invention discloses a clamp voltage circuit comprising an input circuit which is used for providing input voltage for the clamp voltage circuit; a low voltage clamp circuit which is used for controlling that the output OUT of the input circuit is no less than a clamp low voltage value VL; a high voltage clamp circuit which is used for controlling that the output OUT of the input circuit is no more than a clamp high voltage value VH; a sink current source which is used for providing sink current bias for the clamp voltage circuit; and a sourcing current source which is used for providing sourcing current bias for the clamp voltage circuit. By means of the clamp voltage circuit of the invention, a clamp voltage circuit having stable input voltage range and can satisfy specific voltage requirement can be realized.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a clamping voltage circuit. Background technique [0002] In many integrated circuits and circuit units, voltage generators are required to provide stable voltage for system use. In order to prevent the voltage output by the voltage generator from exceeding a preset voltage value, or to step down the voltage output by the voltage generator, the output terminals of many voltage generators are usually connected with a clamping voltage circuit. [0003] However, the clamping voltage circuit in the prior art has the following disadvantages: 1. There is no clamping voltage circuit with an independent structure in the industry. 2. The industry usually obtains the required output through the adjustment of the characteristics and size of the MOS transistor and the adjustment of the circuit structure. The voltage range is more troublesome. Contents of the invention [0004] In order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F3/26
CPCG05F3/262
Inventor 马腾飞张宁钱翼飞叶立
Owner SHANGHAI HUALI MICROELECTRONICS CORP
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