Intersil ISL8088高效2.25MHz降压电源方案
Intersil 公司的ISL8088是双路800mA低静态电流高效2.25MHz同步降压电源稳压器，电源电压从2.75V到5.5V，工作频率2.25MHz，可使用小型低成本电感和电容，每路输出电压可低至0.6V，主要应用在DC/DC POL模块，μC/μP, FPGA和DSP电源，路由器和交换机的插入DC/DC模块，测试和测量系统，锂离子电池和条形码阅读器。本文介绍ISL8088主要特性，方框图，应用电路，以及ISL8088 EVAL1Z评估板主要特性，电路图和所用材料清单。
Dual 800mA Low Quiescent Current 2.25MHz High Efficiency Synchronous Buck Regulator
The ISL8088 is a high efficiency, dual synchronous step-down DC/DC regulator that can deliver up to 800mA continuous output current per channel. The supply voltage range of 2.75V to 5.5V allows the use of a single Li+ cell, three NiMH cells or a regulated 5V input. The current mode control architecture enables very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL8088 operates at 2.25MHz switching frequency allowing the use of small, low cost inductors and capacitors. Each channel is optimized for generating an output voltage as low as 0.6V.
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