MPQ4571GQB enable pin max voltage

DC-DC Power Converters
1

Hi, I’m using the MPQ4571GQB in my application, exactly like the reference design. And right now I’m in doubt if this is correct.
On the reference design there is an zener diode of 6.2V through an 100k resistor on the enable pin (EN), but according to the datasheet, the max voltage on the enable pin (EN) can be max 6V. Is this correct ? Why not use a zener of a lower voltage, like 5.7V ?

B.R.
Ljupco

2

Hello lti,

I would recommend just going with a zener with a lower breakdown voltage.

3

Thanks for the response. I will do that.