Isolated Error Amplifiers From Analog Devices Outperform Optocouplers And Shunt Regulators

27th February 2013
Posted By : ES Admin
Isolated Error Amplifiers From Analog Devices Outperform Optocouplers And Shunt Regulators
Analog Devices, Inc. have today announced the release of new isolated error amplifiers that provide power supply designers with a higher performing, single-chip alternative to isolation techniques based on optocouplers and shunt regulators. Designed for linear feedback power supplies using primary side controllers, the ADuM3190 and ADuM4190 isolated error amplifiers have a 400-kHz bandwidth, with 0.5% typical initial accuracy at 25°C and 1% total accuracy over the extended temperature range.
This provides manufacturers of ac-to-dc and dc-to-dc power supplies, including those that are DOSA-compliant, with a significant upgrade in speed and operating temperature range, as well as a 5× improvement in transient response.

Designed with ADI’s iCoupler? digital isolation technology, the ADUM3190 and ADuM4190 eliminate the CTR of optocouplers that degrades over the lifetime of the devices and limits operation to 85˚C. The ADuM3190 and ADuM4190 include a highly accurate 1.225-V reference and a wideband operational amplifier that can be used to set up a variety of commonly used power supply loop compensation techniques.

ADuM3190/4190 Isolated Error Amplifiers Key Features:

•Bandwidth: 400 kHz
•0.5% initial accuracy at 25°C
•1% total accuracy over –40˚C to +125˚C
•Low power operation: <7 mA
•Isolation voltage:
oADuM3190: 2.5 kV rms
oADuM4190: 5 kV rms (reinforced)

Pricing and Availability:

Downloads


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Startups Magazine Launch Party: Financing a Startup
24th July 2018
United Kingdom WeWork Waterhouse Square, London
European Microwave Week 2018
23rd September 2018
Spain Ifema Feria De Madrid
IoT Solutions World Congress 2018
16th October 2018
Spain Barcelona
Engineering Design Show 2018
17th October 2018
United Kingdom Ricoh Arena, Coventry
Maintec 2018
6th November 2018
United Kingdom NEC, Birmingham