Hiii, i am building bldc motor controller using Arduino, ir2110 gate driver ic and H-bridge of irfz44n mosfet. But problem is i don't know the value boostrap capacitor value to be used in ir2110 circuit to drive mosfets at 48v operation. Please help

 

Try 100nF.

 

Here you go https://www.silabs.com/tools/Pages/bootstrap-calculator.aspx
Max.