LM5035SQ

• 105V/2A half-bridge gate driver
• The synchronous rectifier has a programmable delay control output
• High voltage (105V) start-up regulator
• With line feed-forward and volt-second limit voltage mode control
• Resistor programming, 2MHz capable oscillator
• Patent application oscillator synchronization
• Programmable input undervoltage lockout
• Line overvoltage protection
• Internal thermal shutdown protection
• Adjustable soft-start
• Multifunctional dual-mode overcurrent protection and hiccup delay timer
• Cycle-by-cycle overcurrent protection
• Direct photocoupler interface
• 5V reference output

illustrate

The LM5035 half-bridge controller/gate driver contains the necessary functions to implement line feed-forward voltage mode control for power converters in half-bridge topologies. The floating high-side gate driver is the operating system's ability to supply voltages up to 105V. Both high-side and low-side gate drivers are 2A with peak capability. An internal high-voltage start-up regulator is included, as well as programmable undervoltage lockout (UVLO) and overvoltage protection (OVP). The oscillator is 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 regulated hiccup mode overload protection.