TPSM82913: 输出纹波大

这个是我测试5V输出纹波的图

Hi Yushi,

We will check and get back on this.

Regards,

Haseen.

Hi Yushi,

what is the load connected? is it switching load?

Also I can see multiple waveforms on same time axis can you share only 1 waveform.

-Hitesh

你好，这个是我实际使用的电路图。输出波形，我就是用示波器测试的，没有办法把其他波形分离出来

Can you share the waveform in non persistance mode only one waveform.

Also I can suggest you to add C45 = 47pF and check the output.

-Hitesh

C45=NC

C45=47PF

Isn't the TPSM82913RDUR suitable for applications with  switching load?

It gives me the impression that the chip's response is lagging.

Could it be caused by the downstream LC circuit?

After removing the dynamic load from the downstream stage, the output ripple of the chip becomes very small, approximately 3mV peak-to-peak (Vpp).

I added a 100μF capacitor at the output stage, but the output voltage waveform has deteriorated. Do you have any recommendations regarding output capacitors?