Power conversion device and power conversion method

Abstract

The invention discloses a power conversion device and a power conversion method. The power conversion device comprises a control signal generating module, a conversion module and a comparison module, wherein the control signal generating module is used for producing a control signal according to a delay signal; the conversion module is coupled with the control signal generating module and used for converting an input voltage into an output voltage with different levels according to the control signal; and the comparison module is coupled with the conversion module and the control signal generating module and used for comparing a division voltage produced by the output voltage with a reference voltage and producing the delay signal according to the comparison result, an enabled signal and a clock pulse signal. The power conversion device and the power conversion method can promote the accuracy of the output voltage and prevent a ripple voltage from generating.

Description

technical field [0001] The present invention relates to a conversion device, in particular to a power conversion device with a digitally controlled comparator. Background technique [0002] Electronic devices usually include different electronic components, and the operating voltage required by each electronic component may be different. Therefore, in the electronic device, it is necessary to adjust the output voltage level through a power conversion device and stabilize it at the set The voltage value is used to provide the power required by the electronic components, wherein a DC to DC voltage conversion device (DC to DC Converter) is a common power conversion device. [0003] see figure 1 , figure 1 It is a schematic diagram of a known power conversion device. Such as figure 1 As shown, the power conversion device 10 first controls a clock signal S through the control signal generation module 12 CLK adjusted to generate a control signal S C , and then use the contro...

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Problems solved by technology

[0004] However, the control signal S generated according to the comparison result C The response is very fast, therefore, even when there is an abnormal pulse (abnormal pulse) caused by noise, the conversion module 14 of the power conversion device 10 will also generate the output voltage V OUT changes so that the output voltage V OUT Errors in the level of the power conversion device 10 make the electronic components connected to the back end of the power conversion device 10 unable to operate normally

In addition, the ripple voltage of the power conversion device 10 depends on the signal delay of the comparator 16 and the load of the back-end electronic components, and cannot be effectively controlled

Therefore, the known power conversion device 10 cannot effectively control the problems caused by abnormal voltage output and ripple voltage

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