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Analog Devices’ New Isolated Power Controller Series Streamlines Design and System Reliability

Analog Devices ADP1071 1 and ADP1071 2

Analog Devices’ New ADP1071-1 and ADP1071-2 are isolated synchronous flyback controllers and the ADP1074 is an isolated synchronous active clamp forward controller.

Analog Devices has announced a series of three isolated pulse width modulation (PWM) controllers with integrated 5 kV isolation enabled by ADI’s award-winning iCoupler technology. The ADP1071-1 and ADP1071-2 are isolated synchronous flyback controllers and the ADP1074 is an isolated synchronous active clamp forward controller.

The new devices are touted to offer a unique combination of a primary and secondary side controller with iCoupler isolation technology in a single easy-to-use package with true secondary side sensing providing all the benefits of primary and secondary side controllers in one combination.

The iCoupler technology is sought to provide high bandwidth for excellent transient response with over five times improvement and over 20% reduced output capacitance.

By integrating multiple functions such as overvoltage protection (OVP), output tracking, and light load mode for greater energy efficiency and SR Drivers, which ordinarily need several discrete components, board space is reduced by as much as 35% and system reliability greatly improved when compared to traditional approaches using optocouplers. The new PWM controllers are designed for isolated DC/DC power supplies for use in universal input off-line, industrial, or telecom power supplies. Another important feature includes secondary side communication using PGOOD to eliminate the typical isolation barrier constraints while reducing external component count.

Availability and Packaging

Part NumberAvailabilityPackageDescription
ADP1071-1October 201716-Lead SOIC wide body packageFlyback controller with integrated isolation and SR drive with light load mode
ADP1072-2October 201716-Lead SOIC wide body packageFlyback controller with integrated isolation and SR drive
ADP1074July 201724-Lead SOIC wide body packageForward controller with integrated isolation and SR drive

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