Datasheet Analog Devices LT3781IG#TRPBF

LT3781
“Bootstrap” Start Dual
Transistor Synchronous Forward Controller
U FEATURES DESCRIPTIO The LT®3781 controller simplifies the design of high
power synchronous dual transistor forward DC/DC converters. The part employs fixed frequency current mode
control and supports both isolated and nonisolated topologies. The IC drives external N-channel power MOSFETs
and operates with input voltages up to 72V. High Voltage Operation up to 72V
Synchronizable Operating Frequency and Output
Switch Phase for Multiple Controller Systems
Synchronous Switch Output
Undervoltage Lockout Protection with 6V Hysteresis
for Self-Biased Power
Fixed Frequency Operation to 350kHz
Local ±1% Voltage Reference
Input Overvoltage Protection
Low Start-Up Current
Programmable Start Inhibit for Power Supply
Sequencing and Protection
Optocoupler Support
Soft-Start Control ■
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