Hello,

In the datasheet of IR2101 (description on first page), It is mentioned that,

The floating channel can be used to drive an N-channel power MOSFET or IGBT in
the high side configuration which operates up to 600 volts.

Usually, the floating channel (Vs) is coonected in between the two mosfets in a leg. If Vdc = 600v, then floating channel voltage will be at 300V.

How can i adjust the floating channel voltage to a desired level (0 ~ 600V)??​

 

The floating channel goes to Vdc when the top MOSFET is on. Why do you say it's only 1/2 that?

 

The floating channel goes to Vdc when the top MOSFET is on. Why do you say it's only 1/2 that?

iam saying when the mosfet is off.

 

iam saying when the mosfet is off.

So why do you want the floating channel voltage to be 600V when the MOSFET is off?