LM5035SQ

• 105V/2A half-bridge gate driver
• The synchronous rectifier has a programmable delay control output
• High voltage (105V) start regulator
• With line feedforward and volt•2 limit voltage mode control
• Resistance programming, 2MHz capability oscillator
• Patent pending oscillator synchronization
• Programmable input undervoltage lockout
• Line overvoltage protection
• Internal thermal shutdown protection
• Adjustable soft start
• Multi-function dual-mode overcurrent protection and hiccup delay timer
• Cycle-by-cycle overcurrent protection
• Direct optocoupler interface
• 5V reference output

illustrate

The LM5035 half-bridge controller/gate driver includes the necessary features to implement line voltage feed-forward voltage mode control used by half-bridge topology power converters. The floating high-side gate driver is the operating system's supply voltage capability up to 105V. Both high-side and low-side gate drivers are capable of 2A peak capability. An internal high-voltage start-up regulator is included, as well as programmable undervoltage lockout (UVLO) and overvoltage protection (OVP). Oscillators are programmed to frequencies up to 2MHz with a single resistor. The oscillator can also be synchronized to an external clock. Current sense input, a programmable timer provides cycle-by-cycle current limit and regulation of hiccup mode overload protection.