Reference generation circuit for suppressing overshoot

A technology for generating circuits and benchmarks, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve problems such as start-up voltage overshoot, achieve fast power consumption, and avoid overshoot effects

Active Publication Date: 2021-07-16
HI TREND TECH SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a reference generatio

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  • Reference generation circuit for suppressing overshoot

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[0022] Embodiments of the present invention are described below through specific examples, 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 implementation modes, and various modifications or 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] see figure 1 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic concept of the present invention, although only the components related to the present invention are shown in the diagrams rather than the number, shape and Dimensional drawing, the shape, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the layout of...

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Abstract

The invention provides a reference generation circuit for suppressing overshoot. The circuit comprises a positive temperature coefficient current generation module which comprises two stages of operational amplifiers and is used for generating a current with a positive temperature coefficient according to a triode proportion and a resistance value when a starting voltage is inputted to an input node between the two stages of operational amplifiers to break a circuit degeneracy point, a reference voltage generation module which is connected to the positive temperature coefficient current generation module and is used for generating a voltage with a negative temperature coefficient, converting the current into a voltage with a positive temperature coefficient and superposing the voltage with the positive temperature coefficient and the voltage with the negative temperature coefficient so as to generate a reference voltage irrelevant to the temperature, and an overshoot suppression and loop compensation module which is connected to the input node and is used for suppressing the node voltage to avoid overshoot when the node voltage of the input node transiently changes so that overshoot of the reference voltage is avoided. According to the invention, the problem of starting voltage overshoot existing in an existing reference circuit is solved.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a reference generating circuit for suppressing overshoot. Background technique [0002] Reference voltage source or voltage reference (Voltage Reference) usually refers to a high-stability voltage source used as a voltage reference in a circuit. With the continuous increase in the scale of integrated circuits, especially the development of system integration technology (SOC), the reference The voltage source has also become an indispensable basic circuit module in large-scale, VLSI and almost all digital and analog systems. [0003] An ideal reference voltage source should not be affected by the power supply and temperature, and can provide a stable voltage in the circuit. The term "reference" just means that the value of the reference voltage source should have higher accuracy and stability than the general power supply. However, under normal circumstances, the referenc...

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Application Information

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IPC IPC(8): G05F1/567
CPCG05F1/567
Inventor 宋宇
Owner HI TREND TECH SHANGHAI
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