LM5034MTC/NOPB

产品概述

The LM5034MTC/NOPB is a dual current-mode Pulse Width Modulated (PWM) Controller contains all the features needed to control either two independent forward/active clamp dc/dc converters or a single high current converter comprised of two interleaved power stages. The two controller channels operate 180° out of phase thereby reducing input ripple current. The LM5034 includes a startup regulator that operates over a wide input range up to 100V and compound (bipolar + CMOS) gate drivers that provide a robust 2.5A peak sink current. The adjustable dead-time of the active clamp gate drivers and adjustable maximum PWM duty cycle reduce stress on the primary side MOSFET switches. Additional features include programmable line under-voltage lockout, cycle-by-cycle current limit, hiccup mode fault operation with adjustable restart delay, PWM slope compensation, soft-start and a 2MHz capable oscillator with synchronization capability.

• Two independent PWM current mode controllers
• Integrated high voltage startup regulator
• Compound 2.5A Main output gate drivers
• Synchronizable oscillator
• Active clamp gate driver for p-channel MOSFETs
• Adjustable gate drive overlap time
• Programmable maximum duty cycle
• Maximum duty cycle fold-back at high line voltage
• Adjustable timer for hiccup mode current limiting
• Integrated slope compensation

• Adjustable line under-voltage lockout
• Independently adjustable soft-start (each regulator)
• Direct interface with opto-coupler transistor
• Thermal shutdown
• Green product and no Sb/Br

应用

电源管理, 工业, 车用, 通信与网络