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LM2733升压方案

Other Parts Discussed in Thread: LM2733

上图是我们按照TI给出的用LM2733升压200V方案画的原理图,输入直流12V,用于升压90V。不知道图上的mos管的D、S极是否接反了?和TI的方案相比感觉好像是接反了。另外我将33uH的电感换成了15uH的功率电感,输出只有14V,是因为电感量太小了吗?(此时已将D、S换了过来)由于以前没有这方面的经验,还请详细解答一下,谢谢!