ADUM3471: PWM Controller and Transformer Driver with Quad-Channel Isolators

adum3471 功能框图The ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474 devices are quad-channel, digital isolators with an integrated PWM controller and transformer driver for an isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides up to 2 W of regulated, isolated power at 3.3 V to 24 V from a 5.0 V input supply or from a 3.3 V supply. This eliminates the need for a separate, isolated dc-to-dc converter in 2 W isolated designs. The iCoupler chip-scale transformer technology is used to isolate the logic signals, and the integrated transformer driver with isolated secondary side control provides higher efficiency for the isolated dc-to-dc converter. The result is a small form factor, total isolation solution.The ADuM347x isolators provide four independent isolation channels in a variety of channel configurations and data rates.

技术特性
  • Isolated PWM Controller
  • Integrated transformer driver
  • Regulated adjustable output: 3.3 V to 24 V
  • 2 W output power
  • 70% efficiency at guaranteed load of 400 mA at 5.0 V output
  • Quad dc-to-25 Mbps (NRZ) signal isolation channels
  • 20-lead SSOP package
  • High temperature operation: 105°C
  • High common-mode transient immunity: >25 kV/μs
  • 200 kHz to 1 MHz adjustable oscillator frequency
  • Soft start function at power-up
  • Pulse-by-pulse overcurrent protection
  • Thermal shutdown
  • 2500 V rms isolation
  • Evaluation Board available
技术指标
  • # Ch: 4
  • # of Inputs Side 1: 3
  • # of Inputs Side 2: 1
  • Max Data Rate: 25Mbps
  • Insulation Rating (kVrms): 2.5kV rms
  • Max Prop Delay (ns): 60ns
  • Isolated Output (V)min: 3.3V
应用领域
  • RS-232/RS-422/RS-485 transceivers
  • Industrial field bus isolation
  • Power supply startup bias and gate drives
  • Isolated sensor interfaces
  • Process controls
订购指南
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS
ADUM3471ARSZ 产品状态: 量产 20 ld SSOP 20 工业 Tube, 66 $ 3.32 $ 2.88 Y  材料信息
ADUM3471ARSZ-RL7 产品状态: 量产 20 ld SSOP 20 工业 Reel, 500 - $ 2.88 Y  材料信息
ADUM3471CRSZ 产品状态: 量产 20 ld SSOP 20 工业 Tube, 66 $ 4.53 $ 3.93 Y  材料信息
ADUM3471CRSZ-RL7 产品状态: 量产 20 ld SSOP 20 工业 Reel, 500 - $ 3.93 Y  材料信息
开发工具
产品型号 描述 报价 RoHS
EVAL-ADUM3471EBZ 产品状态: 量产 Evaluation Board $ 69.00
ADUM3471 应用技术支持与电子电路设计开发资源下载
  1. ADUM3471 英文数据手册DataSheet下载 Rev 0, 11/2010 (pdf 741kB). pdf
  2. ADUM3471 中文数据手册DataSheet下载 Rev 0, 11/2010 (pdf 741kB). pdf
  3. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
  4. ADC模数转换器选型指南 . pdf