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[原创] ADI ADuM6420A四通道数字隔离器解决方案

关键词:电源管理 DC/DC转换器 数字隔离器 ADuM6420A

时间:2020-05-11 13:18:24       来源:中电网

ADI公司的ADuM6420A/ADuM6421A/ADuM6422A1是具有isoPower®集成直流/直流转换器的四通道隔离器,采用ADI公司的iCoupler®技术,DC/DC转换器提供稳压的隔离功率,在 2 层 PCB 上满载时满足CISPR 32/EN 55032 Class B级发射限制(高达 5 Mbps).输出电源100mA, 四个直流至 100 Mbps 信号隔离通道,高共模瞬变抗扰度为100 kV/μs, VIORM = 566 V 峰值,工作温度125℃ (最大值).中电网为您整理如下详细资料,主要用在RS-232收发器,电源起动偏压和栅极驱动,隔离传感器接口和工业可编逻辑控制器(PLC).本文介绍了ADuM6420A/ADuM6421A/ADuM6422A1主要特性,功能框图以及评估板EVAL-ADUM6421ARNZ/EVAL-ADUM6421AURN主要特性,电路图,材料清单和PCB设计图.

The ADuM6420A/ADuM6421A/ADuM6422A1 are quad-channel digital isolators with an isoPower®, integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides regulated, isolated power that meets CISPR 32/EN 55032 Class B limits at a full load on a 2-layer printed circuit board (PCB) with ferrites. Popular voltage combinations and the associated output current levels are listed in Table 1.

The ADuM6420A/ADuM6421A/ADuM6422A eliminate the need for a separate, isolated dc-to-dc converter in 500 mW, isolated designs. The iCoupler chip scale transformer technology is used for isolated logic signals and for the magnetic components of the dc-to-dc converter. The result is a sma..

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