LM5039 Datasheet | Texas Instruments

.ti. SNVS621D - FEBRUARY 2010 - REVISED MARCH 2013 LM5039 Half-Bridge PWM Controller with Average Current Limit Check for Samples: LM5039 Features - 2 105V / 2A Half-Bridge Gate Drivers - Synchronous Rectifier Control Outputs with Programmable Delays - High Voltage (105V) Start-up Regulator - Voltage-mode Control with Line Feed-Forward and Volt - Second Limiting - Programmable Average Current Limit Balances the Half-Bridge Capacitor Divider Voltage in an Overload Condition - Programmable Hiccup Mode Timer Reduces Power Dissipation During a Continuous Overload Event - Adjustable Peak Cycle-by-Cycle Over Current Protection - Resistor Programmed, 2MHz Capable Oscillator - Patented Oscillator Synchronization - Programmable Line Under-Voltage Lockout - Internal Thermal Shutdown Protection - Adjustable Soft-Start - Direct Opto-Coupler Interface - 5V Reference Output DESCRIPTION The LM5039 Half-Bridge Controller/Gate Driver contains all of the Features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B halfbridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating highside gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other Features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown. PACKAGES - HTSSOP-20 (Thermally enhanced) - WQFN-24 (4mm x 5mm) Please be aware...