P3S0210BQ

[JaeHwan]

Hi.

I don't know why output voltage drop(VCCP1 & VCCP2 Output voltage : 1.65V).

Using voltage is below.

VCCR : 3.58V

VCCS : 3.3V

VCCE : 3.3V

VCCP1, VCCP2 : 3.3V

1-host : 2-device

host is stm32(Only normal I2C, not I3C)

device is normal eeproms

Thank you.

캡처.JPG

[guoweisun]

Hi 

Could you please help and share with your schematic?

[guoweisun]

Hi 

Could you please help and share with your schematic?

[JaeHwan]

Hi. guoweisun!

Thank you for your fast answer!

캡처1.JPG

1-host(stm32) has above pull-up value.

캡처.JPG

[guoweisun]

For the IIC use case you should add the pull up resistors.

guoweisun_0-1753322115879.png

[JaeHwan]

Hi. guoweisun!

Thank you for your fast answer!

1-host have Pull-up.

캡처.JPG

[guoweisun]

On both sides need pull up resistors.

Did you add on both sides?

[JaeHwan]

Hi, guoweisun!

Yes. add on both sides!

above schematics.

[guoweisun]

 For the output voltage drop waveform,can you give clear picture again for better analysis?

[JaeHwan]

Hi.

캡처.JPG

캡처1.JPG

Thank you.

[guoweisun]

Can you zoom in your waveform? I need to see the  drop value.

[JaeHwan]

20250723_063325.jpg

[guoweisun]

Hi 

The input signal is not up to 3.3V.,can you test the input signal disconnect with this P3S0210BQ to confirm whether it's 3.3V signal?

[JaeHwan]

캡처.JPG

[JaeHwan · Accepted solution]

Hi. guoweisun!

I solved.

Add 47pF capacitor at Input and output lines.

Thank you.