I am looking to use this as a driver for 3x HS and 3x LS independent drivers to drive a total of 6 independent solenoids. The HS drives will be connected to power internally so vdrain makes sense to connected. However, for the Low sides power may be sourced externally meaning vdrive and VM may be zero while the LS drain (the dlx pins) may be non zero (may even be 36v).
Is there a reference design on how to maintain the voltage requirements of the gate drivers, vdrain and Vm pins in this? I have seen putting a diode from the dlx pins to the vdrain pin, but if the external source power is higher than VM that may cause issues with the over current protection for the high side gets or the requirements between Vm and vdrain.
Any help is appreciated.