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Voltage generation circuit and pre-drive signal generation module

A technology of voltage generation circuit and signal generation module, applied in electrical components, output power conversion devices, etc., can solve problems such as limited effect and reduce system efficiency, and achieve the effect of reducing electromagnetic interference noise and taking into account system efficiency.

Active Publication Date: 2019-08-13
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art can only reduce low-frequency electromagnetic interference noise in practical applications, and the effect is limited for higher-frequency electromagnetic interference noise.
Especially in the power conversion system, if the problem of electromagnetic interference noise is solved only by reducing the voltage conversion rate of the driving signal, the system efficiency will be reduced

Method used

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  • Voltage generation circuit and pre-drive signal generation module
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  • Voltage generation circuit and pre-drive signal generation module

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Embodiment Construction

[0065] Exemplary embodiments of the present invention provide a control method for signal frequency hopping, which can at least be used to reduce high-frequency electromagnetic interference noise. The related art may solve the EMI problem of the signal transmission system by reducing the voltage slew rate of the pre-driving signal, but this solution will reduce the system efficiency. The signal frequency hopping control method of the exemplary embodiment of the present invention uses the pre-drive signal to adjust the voltage slew rate or the ringing component of the voltage signal, which can reduce high-frequency electromagnetic interference noise and take into account the system efficiency. A number of embodiments are presented below to illustrate the invention, however the invention is not limited to the exemplified embodiments. Appropriate combinations are also permitted between embodiments.

[0066] figure 1 A schematic diagram of a voltage generation system according t...

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Abstract

The invention provides a voltage generation circuit and a pre-driving signal generation module. The voltage generation circuit comprises a pre-driving unit and a voltage generation unit, the pre-driving unit is used for receiving oscillation signals and improving the driving ability of the oscillation signals in order to generate pre-driving signals, the voltage generation unit is used for receiving input signals and the pre-driving signals and generating output signals according to the input signals and the pre-driving signals, the voltage generation unit generates voltage signals according to the pre-driving signals, and one of the pre-driving unit and the voltage generation unit employs the pre-driving signals to adjust the voltage conversion rate or ringing components of the voltage signals.

Description

technical field [0001] The present invention relates to a voltage generating circuit and a pre-driving signal generating module, and more particularly, to a voltage generating circuit and a pre-driving signal generating module with a frequency hopping control function. Background technique [0002] Generally speaking, electronic circuits are easily affected by electromagnetic interference (ElectroMagnetic Interference, EMI for short) noise during operation, which reduces the performance of work performance. Taking a voltage generating circuit as an example, the prior art uses a control method of signal frequency hopping to solve this problem. However, the prior art can only reduce low-frequency electromagnetic interference noise in practical applications, and has limited effect on higher-frequency electromagnetic interference noise. Especially in the power conversion system, if the problem of electromagnetic interference noise is solved only by reducing the voltage conversi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/44
Inventor 邱珦益郑岚瑄
Owner NOVATEK MICROELECTRONICS CORP