| ADI 公司的ADuM5401/ADuM5402/ADuM5403/ADuM5404是四路带DC转换器的数字隔离器,集成了isoPower隔离的DC/DC转换器. ADuM540x采用iCoupler技术,DC?DC转换器可提供稳压的500mW功率,从5V输入得到5V输出或从3.3V输入得到3.3V输出电压,信号隔离从直流到25 Mbps (NRZ),高温工作到105度C,共模瞬态防卫大于25KV/us,主要应用在RS-232/RS-422/RS-485 收发器,电源起动偏置和栅极驱动器,绝缘传感器接口和工业PLC.本文介绍了ADuM540x主要特性, 方框图和ADuM540x评估板电路图和材料清单(BOM). Quad-Channel Isolators with Integrated DC-to-DC Converter ADuM5401/ADuM5402/ADuM5403/ADuM5404 The ADuM5401/ADuM5402/ADuM5403/ADuM54041 devices are quad-channel digital isolators with isoPower, an integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler technology, the dc-to-dc converter provides up to 500 mW of regulated, isolated power at either 5.0 V from a 5.0 V input supply or 3.3 V from a 3.3 V supply. This eliminates the need for a separate, isolated dc-to-dc converter in low power, isolated designs. The iCoupler chip scale transformer technology is used to isolate both the logic signals and the magnetic components of the dc-to-dc converter. The result is a small form factor, total isolation solution. The ADuM5401/ADuM5402/ADuM5403/ADuM5404 isolators provide four independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide for more information). isoPower uses high frequency switching elements to transfer power through its transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to Application Note AN-0971 for details on board layout considerations. ADuM540x主要特性: isoPower integrated, isolated dc-to-dc converter Regulated 3.3 V or 5.0 V output Up to 500 mW output power Quad dc-to-25 Mbps (NRZ) signal isolation channels Schmitt trigger inputs 16-lead SOIC package with >8.0 mm creepage High temperature operation: 105℃ High common-mode transient immunity: >25 kV/μs Safety and regulatory approvals UL recognition 2500 V rms for 1 minute per UL1577 CSA Component Acceptance Notice #5A (pending) VDE certificate of conformity (pending) DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 560 V peak ADuM540x应用: RS-232/RS-422/RS-485 transceivers Industrial field bus isolation Power supply startup bias and gate drives Isolated sensor interfaces Industrial PLCs  图1.ADuM540x方框图 ADuM540x评估板 The ADuM540x evaluation board can be used with iCoupler isolation products in the wide body SOP16 package. The evaluation board supports the common pad positions for power, ground, and I/O pins found in nearly all of the iCoupler products and is a configurable board that can be adapted to many iCoupler products. SUPPORTED iCoupler MODELS ADuM130x ADuM131x ADuM140x ADuM141x ADuM240x ADuM330x ADuM340x ADuM540x ADuM520x ADuM5000 ADuM540x评估板主要特性: Convenient connections for power through screw terminal blocks Add-on BNC connector for 50 Ω signal sources On-board signal routing Support for signal wrap back Simple signal paths to reduce transmission line effects Pull-up and pull-down provided for control lines Support for isoPower Project area that supports surface-mount and through hole devices  图2.ADuM540x评估板外形图  图3.ADuM540x评估板电路图 ADuM540x评估板材料清单(BOM):  |
