LM5035A

LM5035A www.ti.com SNVS537F – JANUARY 2008 – REVISED APRIL 2013 LM5035A/LM5035A-1 PWM Controller with Integrated Half-Bridge and SyncFET Drivers Check for Samples: LM5035A FEATURES 1 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 Resistor Programmed, 2MHz Capable Oscillator Patent Pending Oscillator Synchronization Programmable Line Under-Voltage Lockout Line Over-Voltage Protection Internal Thermal Shutdown Protection Adjustable Soft-Start Versatile Dual Mode Over-Current Protection with Hiccup Delay Timer Cycle-by-Cycle Over-Current Protection Direct Opto-Coupler Interface 5V Reference Output PACKAGES HTSSOP-20 WQFN-24 (4mm x 5mm) HTSSOP-28 (LM5035A-1 only) DESCRIPTION The LM5035A 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 LM5035A is a functional variant of the LM5035 halfbridge PWM controller. The VCC current limit threshold has been increased to 35 mA. The soft start and soft start currents have been increased from 50 µA to 100 µA. The BST UV threshold has been lowered to less than the VCC UV threshold. The ratio of the T1 and T2 delays on the SR1 and SR2 outputs has been increased from 2:1 to 3:1. The floating highside gate driver ...