ADUM3471: PWM Controller and Transformer Driver with Quad-Channel Isolators
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 |
是 |
ADUM3471 应用技术支持与电子电路设计开发资源下载
- ADUM3471 英文数据手册DataSheet下载 Rev 0, 11/2010 (pdf 741kB). pdf
- ADUM3471 中文数据手册DataSheet下载 Rev 0, 11/2010 (pdf 741kB). pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
- ADC模数转换器选型指南 . pdf
