Buck 18-6 V boost

161

03:49:49

Buck converter w/ MOSFET sw

published 6 years ago

hurz

6 years ago

A logic train is always referenced to ground and even exchange the PMos to an NMos wont help here. What you need is an independend voltage source for an NMos to lift on 18V and above. So with NMos a high side topology. Or you go for a PMos in common source, but you must take care to limit Vgs below 15V to 20V. You starts already with 18V which is for most Mosfets already to much or at least to close what they like.

PrathikP

6 years ago

Actually i should have told him to swap the drain and source terminals. Idk why i said what i said.

hurz

6 years ago

anyway, you have deleted what you have said. Now my hint looks useless. Anyway, keep an pmos does work, but most buck converter do not use pmos, they are terrible in performance compared to its price. Better use a Nmos and do the voltage boost somehow (many different possibilities).

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.