When using the LMR14010A chip to output 5V, the output is fully loaded with electronic load 1A, and the power-up waveform of the output will have a hookback greater than 1V. Neither I increased the capacitance value, used the manual reference design, or simulated it with Tina software, I could not eliminate this backlash.
Is this question related to the chip itself? How should it be solved?
，我调试之后最好只能把回勾的幅值减小到200mv左右，但是无法消除
。他建议我调试一下电感，我之前用的基本是推荐设计只修改了值，电感采用的是22uh，目前还不知道有没有效果。预估也消除不了，因为仿真的波形在1A满载下也存在小幅度的回勾。