| 一种有效抑制辐射性电磁干扰的驱动电路设计 |
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| 引用本文： | 杨东泽.一种有效抑制辐射性电磁干扰的驱动电路设计[J].微电子学,2011,41(5):676-680. |
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| 作者姓名： | 杨东泽 |
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| 作者单位： | 昂宝电子有限公司,上海,200000 |
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| 摘 要： | 开关电源工作在高频开关状态下,是电子设备主要的电磁干扰源.从麦克斯韦方程出发,分析了开关电源产生电磁干扰(EMI)的主要原因.介绍了开关电源传统的驱动电路及解决EMI的方法,提出了一种结构新颖的驱动电路.该电路不仅具有功率管开启时间不随其输入电容变化的优点,而且采用两段式的方法关闭功率管,有效减缓了di/dt和dv/d...
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| 关 键 词： | 开关电源 驱动电路 电磁干扰 |
Design of Driving Circuit for Effective Suppression of Radiated EMI |
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| YANG Dongze.Design of Driving Circuit for Effective Suppression of Radiated EMI[J].Microelectronics,2011,41(5):676-680. |
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| Authors: | YANG Dongze |
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| Affiliation: | YANG Dongze(On-Bright Electrical Co.,Ltd,Shanghai 200000,P.R.China) |
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| Abstract: | Switching-mode power supply,which operates at high frequency switching mode,is the major source of electromagnetic pollution from electronic equipments.Main reasons for electromagnetic interference generated by switching-mode power supply were analyzed using Maxwell equation.Traditional driving circuit for switching-mode power supply and solutions to EMI were described.A driving circuit with new structure was proposed,in which the turn-on time of power transistor did not vary with input capacitance,and two-... |
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| Keywords: | Switch-mode power supply Driving circuit Electromagnetic interference |
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