DC-DC circuit structure and method for eliminating burr influence

Abstract

The invention provides a DC-DC circuit structure and method for eliminating burr influence. The circuit structure comprises an input stage, an intermediate stage, a comparison stage, an output stage, a feedback stage and a starting stage. The output stage is connected to the input stage through the feedback stage; the starting stage comprises a bias stage, a reference stage and a starting source; the starting stage is connected with the input stage and the intermediate stage; the starting stage provides bias current for the input stage through the bias stage; the starting stage provides a first reference current value for the input stage through the reference stage and provides a second reference current value for the intermediate stage. The comparison stage comprises a digital comparator, and the method adjusts the communication state of the output stage and the feedback stage based on the continuous state of logic digital comparison signal values output by the digital comparator. According to the technical scheme of the invention, the burr influence of the multi-stage circuit structure comprising the DC-DC converter can be gradually eliminated through the on-off of the feedback path.

Description

technical field [0001] The invention belongs to the technical field of circuits, and in particular relates to a DC-DC circuit structure and method for eliminating the influence of burrs. Background technique [0002] Signal detection and analysis are often disturbed by burrs, and the output voltage generated by switching power supplies often has high-frequency burrs and spikes. At the same time, digital devices also generate similar high-frequency spikes due to internal switching gates. When it comes to ADC circuits, glitch-related harmonics originate from ADC errors, and glitch-unrelated harmonics originate from other devices or external noise sources. If the ADC is glitching, it is likely that the converter has some degree of integral nonlinearity. In a multi-level circuit structure including DC-DC, the generation of burrs, especially the continuous generation, will greatly affect the quality of the output signal. [0003] Chinese invention patent CN110837000B proposes ...

AI Technical Summary

Problems solved by technology

[0005] However, for a multi-level circuit structure including a DC-DC converter, the hardware composition is relatively complex, and it includes many switch gate circuits, clock circuits, etc., and the possibility of glitches is greater and the duration is more obvious.

Most of the existing technologies try to prevent glitches in a hardware-saving way by "pre-existing" glitch elimination methods, and it is almost impossible to achieve the desired effect for a multi-level circuit structure including DC-DC converters

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