The LT3748 is a switching regulator controller specifically designed for the isolated flyback topology and capable of high power. It drives a low side external N-channel power MOSFET from an internally regulated 7V supply. No third winding or opto-isolator is required for regulation as the part senses the isolated output voltage directly from the primary-side flyback waveform. The LT3748 utilizes boundary mode to provide a small magnetic solution without compromising load regulation. Operating frequency is set by load current and transformer magnetizing inductance. The gate drive of the LT3748 combined with a suitable external MOSFET allow it to deliver load power up to several tens of watts from input voltages as high as 100V. The LT3748 is available in a high voltage 16-lead MSOP package with four leads removed. Applications * Isolated Telecom Converters * High Power Automotive Supplies * Isolated Industrial Power Supplies * Military and High Temperature Applications * 5V to 100V Input Voltage Range * 1.9A Average Gate Drive Source and Sink Current * Boundary Mode Operation * No Transformer Third Winding or Opto-Isolator Required for Regulation * Primary-Side Winding Feedback Load Regulation https://elecena.pl/product/1106465/100v-isolated-flyback-controller 2010-07-22 https://elecena.pl/product/1106465/100v-isolated-flyback-controller 2017-10-09 https://elecena.pl/product/1106465/100v-isolated-flyback-controller 2025-01-20