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关于LM5160的FLYBACK中变压器的设计

Other Parts Discussed in Thread: LM5160, ISO5451, LM5017

请看附件,从TI网上下的,不知道里面的变压器是怎么计算得来的,看了TI的一些详细的参考文档都是原边都正电压,但这个原边是负电压。求高手指点

lm5160 supply power for sigle IGBT driver.pdf