Delay unit module not affected by power supply

Abstract

The invention relates to a delay unit module not affected by a power supply. The delay unit module comprises a delay chain which is composed of a plurality of delay units, and the power supply; the delay unit module further comprises a power supply fluctuation detection unit and x switches, wherein each switch is respectively connected with x delay units in the delay chain in parallel; the power supply fluctuation detection unit is used for detecting fluctuations generated by the power supply, and transforming the fluctuations into x channels of control signals; and the x channels of control signals respectively control on-off of the x switches. The delay unit module not affected by the power supply provided by the invention solves the technical problem that the existing delay unit is greatly influenced by mains voltage fluctuation; the delay unit module adopts the power supply fluctuation detection unit to detect the power supply fluctuations and transform the fluctuations into the control signals, after that, control the on-off of the switches which are connected to the delay unit in parallel, so as to offset the influence due to the power supply fluctuations by adjusting the number of delay units in an extended chain, and a delay unit not affected by the power supply can be obtained.

Description

technical field [0001] The invention relates to the field of chips, in particular to a delay unit module not affected by power supply. Background technique [0002] see figure 1 , a common delay cell module. [0003] In general, the delay unit module is used to delay a signal, while ensuring that the input signal and the output signal have the same indicators such as period and duty cycle, and only adjust the phase. [0004] The delay units need the power provided by the power supply module to work normally. However, the power supply will fluctuate due to load changes and other reasons. See figure 2 . The signal output of the delay unit module is closely related to the power supply voltage of the delay unit module. When the voltage is low, the phase difference will be delayed than expected, and when the voltage is high, the phase difference will be earlier than expected. As a result, the output of the delay module will be affected by its power supply voltage fluctuation...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem that the existing delay unit is greatly affected by the fluctuation of the power supply voltage, the present invention provides a delay unit module that is not affected by the power supply

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