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LM3481 boost circuit

In the design of a DC-DC circuit, input lithium battery (3V-4.2V), output DC 120V 4W rated, 10W maximum, using LM3481 Flyback topology +MOS+ transformer implementation, but since LM3481 has not been used, need technical support, help me calculate the parameters of the transformer, EFD or EE magnetic core transformer can be used

user6383438:

LM3481-FLYBACK-SCH_202007151120021.docx

Johnsin Tao:

回复 user6383438:

HI

    建议你用升压芯片加chargepump来做,参考下面的案例,选择较低输入电压的升压芯片来做即可,相对比隔离方案简单:

   300V10mA升压.pdf

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