LM5035AMH

• 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 LM5035A 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 LM5035A is a variant of the LM5035 half-bridge PWM controller function. The VCC current limit threshold has been raised to 35 mA. Soft-start and soft-start currents have been increased to 50μA to 100μA. The threshold for BST UV has been reduced below the VCC UV threshold. While SR1 and SR2 output T1 and T2 delay ratios have been changed from 2:1 to 3:1. 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. Summary of differences between LM5035, LM5035A, LM5035B, and LM5035C 。