ADIADuM540x四路帶DC轉(zhuǎn)換器的數(shù)字隔離方案

1、ADIADuM540x四路帶DC轉(zhuǎn)換器的數(shù)字隔離方案ADI公司的ADuM5401/ADuM5402/ADuM5403/ADuM5404是四路帶DC轉(zhuǎn)換器的數(shù)字隔離器,集成了isoPower隔離的DC/DC轉(zhuǎn)換器.ADuM540x采用iCoupler技術(shù),DC?DC轉(zhuǎn)換器可提供穩(wěn)壓的500mW功率,從5V輸入得到5V輸出或從3.3V輸入得到3.3V輸出電壓,信號隔離從直流到25Mbps(NRZ),高溫工作到105度C,共模瞬態(tài)防衛(wèi)大于25KV/us,主要應(yīng)用在RS-232/RS-422/RS-485收發(fā)器,電源起動偏置和柵極驅(qū)動器,絕緣傳感器接口和工業(yè)PLC.本文介紹了ADuM540x主要特性,

2、方框圖和ADI 公司的ADuM5401/ADuM5402/ADuM5403/ADuM5404是四路帶DC轉(zhuǎn)換器的數(shù)字隔離器,集成了isoPower隔離的DC/DC轉(zhuǎn)換器. ADuM540x采用iCoupler技術(shù),DC?DC轉(zhuǎn)換器可提供穩(wěn)壓的500mW功率,從5V輸入得到5V輸出或從3.3V輸入得到3.3V輸出電壓,信號隔離從直流到25 Mbps (NRZ),高溫工作到105度C,共模瞬態(tài)防衛(wèi)大于25KV/us,主要應(yīng)用在RS-232/RS-422/RS-485 收發(fā)器,電源起動偏置和柵極驅(qū)動器,絕緣傳感器接口和工業(yè)PLC.本文介紹了ADuM540x主要特性, 方框圖和ADuM540x評估板電

3、路圖和材料清單(BOM).Quad-Channel Isolators with Integrated DC-to-DC Converter ADuM5401/ADuM5402/ADuM5403/ADuM5404The 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 technol

4、ogy, 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 i

5、s 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 ra

6、tes (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

7、 considerations.ADuM540x主要特性:isoPower integrated, isolated dc-to-dc converterRegulated 3.3 V or 5.0 V outputUp to 500 mW output powerQuad dc-to-25 Mbps (NRZ) signal isolation channelsSchmitt trigger inputs16-lead SOIC package with 8.0 mm creepageHigh temperature operation: 105High common-mode transi

8、ent immunity: 25 kV/sSafety and regulatory approvalsUL recognition2500 V rms for 1 minute per UL1577CSA Component Acceptance Notice #5A (pending)VDE certificate of conformity (pending)DIN V VDE V 0884-10 (VDE V 0884-10):2006-12VIORM = 560 V peakADuM540x應(yīng)用:RS-232/RS-422/RS-485 transceiversIndustrial

9、field bus isolationPower supply startup bias and gate drivesIsolated sensor interfacesIndustrial PLCsADuM540x評估板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

10、 pins found in nearly all of the iCoupler products and is a configurable board that can be adapted to many iCoupler products.SUPPORTED iCoupler MODELSADuM130xADuM131xADuM140xADuM141xADuM240xADuM330xADuM340xADuM540xADuM520xADuM5000ADuM540x評估板主要特性:Convenient connections for power through screw terminal blocksAdd-on BNC connector for 50 signal sourcesOn-board signal routingSupport for signal wrap backSimple signal paths to reduce transmission line ef