Resistor divider not accurate of Load Switch for Peripherals on i.MX8QXP MEK board.

[question2click6]

Resistor divider not accurate of Load Switch for Peripherals on i.MX8QXP MEK board.

Can you help to give a explaination on it?

best wishes，

Wenwen

[Rita_Wang]

Hi Wen,

   Vgs=3.3x10/(47+10)-3.3 = -2.72V

B.R,

Rita

[question2click6]

Hi Rita,

The worst case to OPEN this PMOS shoule be VGS<-3V, if we only have a -2.7V on Gate pin, the MOSFET will keep closed. So this circuit will not work. Please check, Thanks!

Regards,

Wenwen