LM5025D

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design LM5025D Active Clamp Voltage Mode PWM Controller LM5025D SNVSAB0 – JUNE 2015 1 Features 1 Internal Start-Up Bias Regulator 3-A Compound Main Gate Driver Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis Voltage Mode Control with Feed-Forward Adjustable Dual Mode Over-Current Protection Programmable Overlap or Deadtime Between the Main and Active Clamp Outputs Volt x Second Clamp Programmable Soft-Start Leading Edge Blanking Single Resistor Programmable Oscillator Oscillator Up and Down Sync Capability Precision 5-V Reference Thermal Shutdown 2 Applications Server Power Supplies 48-V Telecom Power Supplies 42-V Automotive Applications High-Efficiency DC-to-DC Power Supplies 3 Description The LM5025D is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025D are: The CS1 and CS2 absolute maximum ratings have been increased to 7 V. The CS1 and CS2 current limit thresholds have been increased to 0.5 V. The internal CS2 filter discharge device has been disabled and no longer operates each clock cycle. The internal VCC and VREF regulators continue to operate when the line UVLO pin is below threshold. The LM5025D PWM controller contains all of the features necessary to implement power converters utilizing the Active Clamp and Reset technique. With the active cl...