Facing cross conduction issues with HR1001B

DC-DC Power Converters
1

Using HR1001B gate driver I am facing some issues with cross conduction. I am trying to tune the system with resistors on Half bridge MOSFET gate terminals, for different impedance for both sink and source currents. But nevertheless can not get the system to properly behave, so I would like to ask for help to fix such issue.

Also another question, is there a way to tune the dead time of the system. I understand that dead time on this gate driver is automatic, but in some situations the dead time is too long so the MOSFET turns off before the gate signal.

2

Hi Matas,

This does look to adjust the dead-time automatically. Please make sure you have the Vhbvs cap to sense the dv/dt. You can refer to page14-16 of the datasheet.
You can also check if it is hitting the min or max dead-time.

Best Regards,
Yu