LM7480x-Q1 Ideal Diode Controller

Texas Instruments LM7480x-Q1 Ideal Diode Controller drives and controls external back-to-back N-Channel MOSFETs to emulate an ideal diode rectifier with power path ON/OFF control and over-voltage protection. The wide input supply of 3V to 65V allows protection and control of 12V and 24V automotive battery-powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65V. An integrated ideal diode controller (DGATE) drives the first MOSFET to replace a Schottky diode for reverse input protection and output voltage holdup. With a second MOSFET in the power path, the device allows load disconnect (ON/OFF control) and overvoltage protection using HGATE control. The device features an adjustable over-voltage cut-off protection feature. The Texas Instruments LM7480x-Q1 controller can drive the external MOSFETs in Common Drain and Common Source configurations. With the Common Drain configuration of the power MOSFETs, the mid-point can be utilized for OR-ing designs using another ideal diode. The LM7480x-Q1 has a maximum voltage rating of 65V. The loads can be protected from extended over-voltage transients like 200V Unsuppressed Load Dumps in 24V Battery systems by configuring the device with external MOSFETs in Common Source topology.