LM5046MH/NOPB Phase-Shifted Full-Bridge PWM Controller With Integrated MOSFET Drivers TSSOP28 spot stock

Product Descriptions

The LM5046 PWM controller  contains all   of  the features necessary to implement a phase-shifted fullbridge topology power converter using either current mode or  voltage mode control.   This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual  2-Ahigh- and low-side gate drivers for the four external bridge MOSFETs,   plus control    signals for  the secondary-side  synchronous  rectifier   MOSFETs. External  resistors program the dead-time to enable zero-volt  switching of  the primary FETs.  Intelligent startup of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional  features include cycle-by-cycle current  limiting,  hiccup mode restart,  programmable soft-start,  synchronous rectifier soft-start,  and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.

Product Features

•   Highest Integration Controller for Small Form Factor, High-Density Power Converters

•   High-Voltage Start-Up Regulator

•   Intelligent Sync Rectifier Start-Up Allows Linear Turn-on into Prebiased Loads

•   Synchronous Rectifiers Disabled in UVLO Mode and Hiccup Mode

•   Two Independent, Programmable Dead-Time Adjustments to Enable Zero-Volt Switching

•   Four High-Current 2-A Bridge Gate Drivers

•   Wide-Bandwidth Opto-Coupler Interface

•   Configurable for Either Current Mode or Voltage Mode Control

•   Dual-Mode Overcurrent Protection

•   Resistor Programmed 2-MHz Oscillator

•   Programmable Line UVLO and OVP

Product Applications

•   E-Bike

•   Military: Radar/Electronic Warfare

•   Power: Telecom DC/DC Module: Analog

•   Private Branch Exchange (PBX)

•   Solar Power Inverters

•   Vector Signal Generator

•   Microwave Oven

•   Point-to-Point Microwave Backhaul

•   Power: Telecom/Server AC/DC Supply: Dual Controller: Analog

•   Solar Micro-Inverter

•   TETRA Base Station

•   Washing Machine: Low-End

Product Specification

Product Photos

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