I need some details on the shoot-through protection on the DRV8301.
The datasheet says:
"The gate driver uses automatic hand shaking when high side FET or low side FET is switching to prevent current shoot through.".
I need to know if the "automatic handshaking" includes monitoring the switching node or if it uses the FET gate voltages or if it is simply timing driven.
I was able to find this:
"Dead time programming definition: Adjustable delay from GH_x falling edge to GL_X rising edge, and GL_X falling edge to GH_X rising edge. This is a minimum dead-time insertion. It is not added to the value set by the microcontroller externally."
This gives the impression that the "automatic handshaking" uses the FET gate pin voltages. Unfortunately, there are no details about the voltage thresholds used.
Is it correct that the shoot-through protection monitors the voltage of the FET gate pins? If so, what are the voltage thresholds used?
Is it true that the switch node voltage is not monitored in the "automatic handshaking" scheme of the DRV8301?
Is this documented somewhere?