6A Dual Synchronous Buck Regulator with Integrated MOSFETs

The ISL65426 is a high efficiency dual output monolithic synchronous buck converter operating over an input voltage range of 3V to 5.5V. This single chip power solution provides two output voltages, which are selectable or externally adjustable from 1V to 80 of the supply voltage while delivering up to 6A of total output current. The two PWMs are synchronized 180° out-of-phase, reducing the RMS input current and ripple voltage.

特性 Features

? High Efficiency: Up to 95

? Fixed Frequency: 1MHz

? Operates From 3V to 5.5V Supply

? ±1 Reference

? Flexible Output Voltage Options

- Programmable 2-Bit VID Input

- Adjustable Output From 1V to 4.0V

? User-Partitioned Power Blocks

? Ultra-Compact DC/DC Converter Design

? PWMs Synchronized 180° Out-of-Phase

? Independent Enable Inputs and System Enable

? Stable All Ceramic Solutions

? Excellent Dynamic Response

? Independent Output Digital Soft-Start

? Power-Good Output Voltage Monitor

? Thermal-Overload Protection

? Overcurrent and Undervoltage Protection

? Pb-Free (RoHS Compliant)

Applications

? FPGA, CPLD, DSP, and CPU Core and I/O Voltages

- Xilinx Spartan IIITM, Virtex IITM, Virtex II ProTM, Virtex 4TM

- Altera StratixTM, Stratix IITM, CycloneTM, Cyclone IITM

- Actel FusionTM, LatticeSCTM, LatticeECTM

? Low-Voltage, High-Density Distributed Power Systems

? Point-of-Load Regulation

? Distributed Power Systems

? Set-Top Boxes