Hi ,
I would like to pass/stop 20V (2MHz)switching signal using 5V in cadence. as shown below with stand alone switch and its application to buck converter in two way switch.
5V control is selectable: it should enable one path at time if we select 5V and other when 0V is applied or any other scheme can be suggested.

Thanks

 

You explanation is confusing.
What "5v control" are you referring to?
What alternate "path" ?

 

You explanation is confusing.
What "5v control" are you referring to?
What alternate "path" ?

i mean using 5V can we control 20V path. we can do using transmission gates if the path has a voltage of 5V also , but here is 20V

 

you need a gate drive, something like this:

http://uk.farnell.com/texas-instruments/iso5500dw/driver-gate-isolated-2-5a-16soic/dp/2214981

or this:

http://uk.farnell.com/fairchild-sem...85/driver-gate-hs-rchrgble-fet-8so/dp/2290270

 

Can't you simply use the 5v to enable/disable the driver?

 

Actually, i want to desgin it from MOSFET level circuit in cadence or any other tool

 

you need a gate drive, something like this:

http://uk.farnell.com/texas-instruments/iso5500dw/driver-gate-isolated-2-5a-16soic/dp/2214981

or this:

http://uk.farnell.com/fairchild-sem...85/driver-gate-hs-rchrgble-fet-8so/dp/2290270

thanks
but if i want to design it from MOSFET level

 

thanks
but if i want to design it from MOSFET level

if you look at the Fairchild Mosfet drive datasheet that I linked to, there is a good block diagram of what you need to do to design your own driver, if that is what your aim is...

 

To control voltages greater than 5V you will need a MOSFET that has a power supply voltage also greater than 5V.
Don't know of any way to control a voltage higher than your supply voltage.