Original question:
LMZ14201: I need a example circuit to drive safely EN from logic in 5 V DC
Hello
I have review my proposed schematic which use a TC4428 to generate invert command set and a set of N Mosfet as drive
IN A / allow to ground the EN Pin
IN B allow to feed EN pin with 5 V DC
TC4428 request a low level of current to work
Regards
David
Hello David,
I think this is an overkill. You should not need 6A MOSFETs to drive an enable logic signal...
You can use much smaller NFET devices. This is similar to what I already suggested to you earlier this week. Here is a diagram withg the LM3880 sequencer you are using and the LMZ14201:
Cheers,
Denislav
Hello, Denislav
Thanks
Can you please confirm 12V as LMZ is limited to 6.5 V on EN , I plan to use 5 V by the way not a problem I need to focus on EN floating pin
in the aim to insure at 120% the floating pin what do you think of this circuit , I force the EN pin to ground by using a P Mosfet drive in same time as the N Mosfet
Regards
David
