LM5035MHX/NOPB

The LM5035 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 feedforward. The floating high-side gate driver is capable of operating with supply voltages up to 105 V. Both the high-side and low-side gate drivers are capable of 2-A peak. An internal high voltage start-up regulator is included, along with programmable line undervoltage lockout (UVLO) and overvoltage protection (OVP). The oscillator is programmed with a single resistor to frequencies up to 2 MHz. The oscillator can also be synchronized to an external clock. A current sense input and a programmable timer provide cycle-bycycle current limit and adjustable hiccup mode overload protection.

Applications

• Industrial Power Converters
• Telecom Power Converters

Key features

• 105-V, 2-A Half-Bridge Gate Drivers
• Synchronous Rectifier-Control Outputs With Programmable Delays
• High-Voltage (105-V) Start-up Regulator
• Voltage Mode Control With Line Feedforward and Volt-Second Limiting
• Resistor Programmed, 2-MHz Capable Oscillator
• Patent Pending Oscillator Synchronization
• Programmable Line Undervoltage Lockout
• Line Overvoltage Protection
• Internal Thermal Shutdown Protection
• Adjustable Soft-Start
• Versatile Dual Mode Overcurrent Protection With Hiccup Delay Timer
• Cycle-by-Cycle Overcurrent Protection
• Direct Optocoupler Interface
• 5-V Reference Output