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LM5160A: 上电启动延时问题

Part Number: LM5160A
Other Parts Discussed in Thread: LM5160

LM5160_buck_20250221.xls

我按照lm5160 buck quick calculate中设计的buck电源,软起动时间设置成2ms,输出电压4.9V,但实际测试下来上电之后Vout在2ms软起动过程中只会升到3.3V左右,在接下来60ms才逐渐稳定到4.9V。

我尝试把反馈网络type3中的一颗82k电阻移除,启动时间就正常了,但输出纹波会变得非常大。

想请问下有何改善方案?