SNOSDF5 September 2023 LM74700D-Q1
PRODUCTION DATA
The gate driver is used to control the external N-Channel MOSFET by setting the GATE to ANODE voltage to the corresponding mode of operation. There are three defined modes of operation that the gate driver operates under forward regulation, full conduction mode and reverse current protection, according to the ANODE to CATHODE voltage. Forward regulation mode, full conduction mode and reverse current protection mode are described in more detail in the Regulated conduction Mode, Full Conduction Mode and Reverse Current Production Mode sections. Figure 9-2 depicts how the modes of operation vary according to the ANODE to CATHODE voltage of the LM74700D-Q1. The threshold between forward regulation mode and conduction mode is when the ANODE to CATHODE voltage is 50 mV. The threshold between forward regulation mode and reverse current protection mode is when the ANODE to CATHODE voltage is –11 mV.
Before the gate driver is enabled, the following three conditions must be achieved: