Isolation Bootstrap Calculator

The web-based bootstrap calculator helps you determine the required CB recharge current at MAX and MIN duty cycle, and provides the information required to determine the best fit bootstrap module.

     

 

  
Required Charge to be Supplied by Boot Cap CB
MOSFETs/IGBTs
Frequency
Hz
Qg
nC
Qg(TL)
DMAX
%
DMIN
%
tcyc
sec
IDDO
mA
Boot Cap CB Value Calculation
Δ VCB
% of VDDO
VDDO
V
Results
QCB
C
CB Value
nF
IMAX
mA
IAVG
mA