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LM5035C: PSPICE输出电压调整问题

Part Number: LM5035C

我下载了LM503​​5C PSPICE参考设计模型,想要模拟输出7V,我们调整了Feedback电阻成10k及2k,用以分压出1.2V反馈到OPA并回到COMP。

不过跑了模拟后,Vout仅有3.5V,且Vfb卡在0.6V左右,请问是有遗漏了什么参数未调整吗?谢谢