Analog Devices’ Next Generation of Digital Power Controllers with PMBus Interface Targets Highest Density, Energy Efficient

  Analog Devices’ Next Generation of Digital Power Controllers with PMBus
  Interface Targets Highest Density, Energy Efficient Isolated Power

APEC 2013

Business Wire

NORWOOD, Mass. -- March 18, 2013

Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors
for signal-processing applications, today introduced the ADP1051 advanced
digital power controller with PMBus™ interface targeting ultra-compact, high
density isolated DC-to-DC power supply systems with parallel/redundant
capability. The ADP1051 is an extremely versatile digital controller with six
PWM (pulse width modulation) logic outputs that can be programmed using an
easy-to use graphic user interface (GUI) via the PMBus interface. The device
enables high energy efficiency topologies including full bridge and active
clamp forward variants with precision drive timing and control of secondary
synchronous rectifiers. Energy efficiency is further optimised using adaptive
dead-time compensation to improve the efficiency over the load range and
programmable light load mode operation combined with low device power
consumption (<100mW) to reduce system low power standby losses. The ADP1051
implements an extensive PMBus command set including the ability to accurately
read input and output power measurements and enable the end-user to make
intelligent system management decisions to optimize energy efficiency. The
tiny size 4 x 4 mm LFCSP package makes the ADP1051 ideal for high density,
ultra-compact isolated DC-to-DC power module or embedded designs for
networking, communications and industrial applications ranging typically from
100 W upwards.

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The ADP1051 power controller is easily programmed using an intuitive
graphical-user interface which enables customers to design and store settings
in the high reliability, internal EEPROM memory. The ADP1051 implements
several features to enable a robust system of parallel and redundant operation
for customers that require high availability for increased current scaling.
The device includes master/slave synchronization, reverse current protection
and pre-bias start-up, accurate passive or droop current sharing between power
supplies and a patented technique to identify and safely shutdown an erroneous
power supply in parallel operation mode.

Key ADP1051 Features and Benefits:

  *Small 4 x 4mm package enables ultra-compact isolated DC-to-DC design
  *Extensive PMBus command set for programming and telemetry enabling
    intelligent power management and efficiency optimization
  *Digital control loop with six logic PWM logic signals to drive high
    efficiency power supply topologies with controlled synchronous
  *Adaptive dead-time compensation and light load modes
  *Robust parallel operating scheme for high availability applications
    requiring redundancy including accurate droop current share, pre-bias
    start-up, reverse current protection and conditional overvoltage
  *GUI programmability promotes ease of use and reduces time to market

Availability, Pricing and Complementary Components

Product             Status   Temp Range        Price Each   Packaging
                                                     Per 1,000
ADP1051             Now      -40°C to +125°C   $3.90        24-lead
ADP1051-240-EVALZ   Now      --                $600.00      --
ADP1051DC1-EVALZ    Now      --                $200.00      --

The ADP1051 digital controller is complemented by ADI’s MOSFET drivers and
ADI’s iCoupler^® digital isolators in isolated power systems, and the ADP1047
and ADP1048 power factor correction digital controllers in AC-to-DC systems.
These devices facilitate easy implementation of intelligent power management
for greater energy efficiency.

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which
Analog Devices has built one of the longest standing, highest growth companies
within the technology sector. Acknowledged industry-wide as the world leader
in data conversion and signal conditioning technology, Analog Devices serves
over 60,000 customers, representing virtually all types of electronic
equipment. Analog Devices is headquartered in Norwood, Massachusetts, with
design and manufacturing facilities throughout the world. Analog Devices is
included in the S&P 500 Index.

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iCoupler^® is a registered trademark of Analog Devices, Inc.

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Analog Devices Inc.
Joe Dussi, 781-937-1612
Porter Novelli
Andrew MacLellan, 617-897-8270
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