器件名称: LM5035C
功能描述: PWM Controller with Integrated Half-Bridge and SyncFET Drivers
文件大小: 552.76KB 共28页
简 介:LM5035C PWM Controller with Integrated Half-Bridge and SyncFET Drivers
January 19, 2010
LM5035C PWM Controller with Integrated Half-Bridge and SyncFET Drivers
General Description
The LM5035C 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 LM5035C is a functional variant of the LM5035B halfbridge PWM controller. The amplitude of the SR1 and SR2 waveforms are 5V instead of the Vcc level. Also, the soft-stop function is disabled in the LM5035C. The LM5035, LM5035A, LM5035B, and LM5035C include a floating high-side gate driver, which is capable of operating with supply voltages up to 105V. Both the high-side and lowside gate drivers are capable of 2A peak. An internal high voltage startup 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 2MHz. The oscillator can also be synchronized to an external clock. A current sense input and a programmable timer provide cycle-by-cycle current limit and adjustable hiccup mode overload protection.
Features
■ 105V / 2A Half-Bridge Gate Drivers ■ Synchronous Rectifier Control Outputs with
Programmable Delays
■ Reduced Deadtime Between High and Low Side Drive for
Higher Maximum Duty Cycle.
■ High Voltage (105V) Start-up Regulator ■ Voltage mode Control with Line Feed-Fo……
