Intersil ISL70001SRH耐辐射高效6A同步电源方案
Intersil 公司的ISL70001SRH是耐辐射高效同步降压电源稳压器,输入电压3V到5.5V,输出电压外部调节,从0.8V到输入电压的85%,效率大于90%,输出电流在TJ< +145℃时为6A. 耐辐射剂量在50-300rad(Si)/s之间,主要用在FPGA,CPLD, DSP,CPU核或I/O电源,以及低压高密度分布式电源系统.本文介绍ISL70001SRH耐辐射电源主要特性,功能方框图,典型应用电路以及ISL70001SRHEVAL1Z评估板电路图和材料清单(BOM):
The ISL70001SRH is a radiation hardened and SEE hardened high efficiency monolithic synchronous buck regulator with integrated MOSFETs. This single chip power solution operates over an input voltage range of 3V to 5.5V and provides a tightly regulated output
voltage that is externally adjustable from 0.8V to ~85% of the input voltage. Output load current capacity is 6A for TJ < +145℃.
The ISL70001SRH utilizes peak current-mode control with integrated compensation and switches at a fixed frequency of 1MHz. Two ISL70001SRH devices can be synchronized 180° out-of-phase to reduce input RMS ripple current. These attributes reduce the number and size of external components required, while providing excellent output transient response. The internal synchronous power switches are optimized for high efficiency and good thermal performance.
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