LT8310

Features n Input Voltage Range: 6V to 100V n Duty Mode Control Regulates an Isolated Output without an Opto n High Efficiency Synchronous Control n Short-Circuit (Hiccup Mode) Overcurrent Protection n Programmable OVLO and UVLO with Hysteresis n Programmable Frequency (100kHz to 500kHz) n Synchronizable to an External Clock n Positive or Negative Polarity Output Voltage Feedback with a Single FBX Pin n Programmable Soft-Start n Low Shutdown Current < 1µA n Available in FE20 TSSOP with HV Pin Spacing Applications n Industrial, Automotive and Military Systems n 48V Telecommunication Isolated Power Supplies n Isolated and Nonisolated DC/DC Converters LT8310 100VIN Forward Converter Controller Description The LT®8310 is a simple-to-use resonant reset forward converter controller that drives the gate of a low side N-channel MOSFET from an internally regulated 10V supply. The LT8310 features duty mode control that generates a stable, regulated, isolated output using a single power transformer. With the addition of output voltage feedback, via opto-coupler (isolated) or directly wired (nonisolated), current mode regulation is activated, improving output accuracy and load response. The flexibility to choose transformer turns ratio makes high step-down or step-up ratios possible without operating at duty cycle extremes. The user can program the switching frequency from 100kHz to 500kHz to optimize efficiency, performance or external component size. A synchronous output i...