器件名称:
LM5026SD
功能描述:
Active Clamp Current Mode PWM Controller
文件大小:
936.67KB 共23页
简 介:
LM5026 Active Clamp Current Mode PWM Controller August 2005 LM5026 Active Clamp Current Mode PWM Controller General Description The LM5026 PWM controller contains all of the features necessary to implement power converters utilizing the active clamp / reset technique with current mode control. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp / reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The device can be configured to control either a P-Channel or N-Channel clamp switch. The main gate driver features a compound configuration, consisting of both MOS and Bipolar devices, providing superior gate drive characteristics. The LM5026 can be configured to operate with bias voltages over a wide input range of 8V to 100V. Additional features include programmable maximum duty cycle, line under-voltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable timeout delay, PWM slope compensation, soft-start, 1MHz capable oscillator with synchronization input / output capability, precision reference and thermal shutdown. Features n n n n n n n n n n n n n Current Mode Control Internal 100V Start-up Bias Regulator 3A Compound Main Gate Driver High Bandwidth Opto-coupler Interface Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis Versatile Dual Mode Ov……
