输入电压:250V~420V;输出电压:12V-10A;CCM频率(最大):65KHz.满负载为CCM模式,轻负载为QR模式.
2.参数如下:
变压器电感Lm=400uH,匝比n=8.5;原边峰值电流Ippk=3.11A;初级有效电流Ip_RMS=1.05A;次级有效电流Is_RMS=13.62A.
原边取样电阻=0.15ohm.变压器采用PQ3220.控制器为OB5282A,开关管为CRJF340N65G2。
说明:
OB5282A,CRJF340N65G2模型为自建模型;
3.仿真原理图
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4.输入250V输出12V10A波形:
启机波形:
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启动时间:211mS,
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MOSFET波形如下:
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5.输入250V输出12V4A MOSFET波形如下:
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6.输入420V输出12V10A 波形如下:
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7.输入420V输出12V4A MOSFET波形如下:
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附CRJF340N65G2单脉冲测试
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