功率场效应管输出电容的快速测量
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作者单位:

1.山西大学自动化与软件学院;2.山西大学数学科学学院

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基金项目:

“十三五”全军共用信息系统装备专用技术预先研究资助项目(31512080305)


Fast Measurement of Output Capacitance of FETs
Author:
Affiliation:

1.School of Automation and Software,Shanxi University;2.School of Mathematical Sciences,Shanxi University

Fund Project:

Advanced Research Fund for Special Technology of Information System Equipment used by PLA during the 13th Five-Year Plan Period (31512080305)

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    摘要:

    针对场效应管的输出电容,首先,分析了输出电容非线性特性的具体原因及输出电容在软开关电路中的相关特性,并提出了一种能够快速测量场效应管输出电容的方法,即损耗法。通过设计一种降压型软开关电路,测量其软换流过程中的电荷变化量来对损耗法测量的准确性进行相关验证,充分证明了损耗法测量的准确性与快速性。成功解决了软开关电路的设计中输出电容相关特性难确定与测量等问题。

    Abstract:

    Aiming at the output capacitance of FETS, firstly, the nonlinear characteristics of output capacitance are analyzed, the related charac-teristics of output capacitance in soft switching circuit are analyzed, and a fast measurement method of output capacitance of FETS, namely the loss method, is proposed. By designing a step-down soft switching circuit, the accuracy of loss measurement is verified according to the charge change in the process of soft converter, which fully proves the accuracy and rapidness of loss measurement. The difficulty in determining and measuring the output capacitance related characteristics in the design of soft switch circuit is solved suc-cessfully.

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  • 收稿日期:2022-01-04
  • 最后修改日期:2022-03-16
  • 录用日期:2022-03-25
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