Hi Rick,
Thanks for the response.
One of the reason for VDS as 0.7V can be the IRF540N FET which has has a ("RDS(on) Static Drain-to-Source On-Resistance ––– ––– 44 mΩ )
The Charge pump voltage measured( for VM - 11.6V)
VCP = 21.2 V
CP1 = 0.4V
CP2 = 11.4V
Also I tried with setting the DRIVE REGISTER's to
OCPTH - 11 :1000mV
OCPDEG - 11 : 8.4uS
But still see the same fault of OCP.
Please let me know any changes.