ISL6744AB集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器規(guī)格書PDF中文資料

The ISL6744 is a low cost, primary side, double-ended

controller intended for applications using full and half-bridge

topologies for unregulated DC/DC converters. It is a voltagemode PWM controller designed for half-bridge and fullbridge power supplies. It provides precise control of

switching frequency, adjustable soft-start, precise deadtime

control with deadtimes as low as 35ns, and overcurrent

shutdown.

Low start-up and operating currents allow for easy biasing in

both AC/DC and DC/DC applications. This advanced

BiCMOS design features low start-up and operating

currents, adjustable switching frequency up to 1MHz, 1A

FET drivers, and very low propagation delays for a fast

response to overcurrent faults.

Features

? Precision Duty Cycle and Deadtime Control

? 100μA Start-up Current

? Adjustable Delayed Overcurrent Shutdown and Restart

? Adjustable Oscillator Frequency Up to 2MHz

? 1A MOSFET Gate Drivers

? Adjustable Soft-Start

? Internal Over Temperature Protection

? 35ns Control to Output Propagation Delay

? Small Size and Minimal External Component Count

? Input Undervoltage Protection

? Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

? Telecom and Datacom Isolated Power

? DC Transformers

? Bus Converters