The ADuM3190 is an isolated error amplifier based on Analog Devices, Inc. iCoupler® technology. The ADuM3190 is ideal for linear feedback power supplies with primary side controllers enabling improvements in transient response, power density and stability as compared to commonly used optocoupler and shunt regulator solutions.
Unlike optocoupler-based solutions, which have an uncertain current-transfer-ratio over lifetime and at high temperatures, the ADuM3190 transfer function does not change over lifetime and is stable over a wide temperature range of -40°C to 125°C.
Included is a wide band operational amplifier which can be used to set up a variety of commonly used power supply loop compensation techniques. The ADuM3190 is fast enough to allow a feedback loop to react to fast transient conditions and over current conditions. Also, included is a high accuracy 1.225V reference to compare with the supply output set point.
The ADuM3190 is packaged in a small QSOP-16 package for 2.5kVrms.APPLICATIONS
|Title||Content Type||File Type|
|ADuM3190: High Stability Isolated Error Amplifier Data Sheet (Rev 0, 02/2013) (pdf, 765 kB)||Data Sheets|
|CN0342: Flyback Power Supply Using a High Stability Isolated Error Amplifier (pdf, 295 kB)||Circuit Note|
Replacing Optocouplers and Shunt Regulators with ADuM3190
This video discusses how the ADuM3190 isolated error amplifier can replace optocouplers and shunt regulators with in isolated power supplies.
ADuM3190 (Isolated Error Amp) & ADP1051 (Digital Controller)
This video features the isolated error amplifier ADuM3190 board and the demo board of the ADP1051 digital isolated DC to DC converter board.
|UG-534: iCoupler ADuM3190 Isolated Error Amplifier Evaluation Board (pdf, 611 kB)||User Guides|
|MS-2727: Optimizing Multiple Output Power Converters (pdf, 4102 kB)||Technical Articles|
|Analog Devices Achieves Major Milestone by Shipping 1 Billionth Channel of iCoupler Digital Isolation (19 Sep 2013)||Press Releases||HTML|
|Isolated Error Amplifiers Outperform Optocouplers and Shunt Regulators in Power Supply Applications (26 Feb 2013)||Press Releases||HTML|
|Glossary of EE Terms||Glossary||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.