Primarion Offers Industry's First Dual-Output Digital Synchronous DC/DC Controller

    PX7522 Delivers Power Conversion, Power Management and PMBus(TM) Support
for Two Rails

    TORRANCE, CALIF., April 24 /CNW/ - Primarion, a mixed-signal
semiconductor company that designs, manufactures and markets digital power
ICs, today announced the addition of the dual-output, dual-phase PX7522 to the
Primarion Di-POL(TM) product family of fully programmable digital power
conversion and power management ICs.

    The PX7522 is a power conversion and power management IC for synchronous
DC/DC converters in the telecom, datacom, computing and storage markets. The
PX7522 is configured to regulate two independent outputs, or two phases in a
single output mode. It supports both DCR and RDSon current sense topologies
and a wide output range of 0.5V to 8V. This highly configurable control IC
utilizes PMBus(TM) and on-chip non-volatile memory (NVM) for extensive
user-friendly control and real-time system monitoring.

    "With the introduction of PX7522, Primarion has taken another major step
forward towards increasing system-level integration," said Mohan Mankikar,
president of Micro-Tech Consultants, a research and consulting firm
specializing in the power electronics market. "The PX7522's higher level of
flexibility, with its dual-output feature and PMBus compatibility for system
communication, will enable OEMs to use this IC in a very cost-effective
manner. This is precisely the type of product progression that will accelerate
market adoption of digital ICs."

    The PX7522's control functions utilize digital technology, providing the
ultimate in adaptable, stable and flexible solutions at an increased output
load. By incorporating an industry standard I2C PMBus serial interface for
control and monitoring, Primarion enables the power supply designer to quickly
optimize designs and monitor real-time system performance.

    "The PX7522 and the Di-POL product family address two aspects that are
becoming increasingly important to OEMs; the first is time to market and the
second is simple system-level communications," said Deepak Savadatti, vice
president of marketing for Primarion. "A complete system can quickly and
easily be built around the PX7522 and other members of the Di-POL product
family with a simple graphical user interface (GUI). The GUI enables designers
to perform design, analysis and optimization without having to devote time to
software programming. We are excited to be able to bring such a complete
solution to the market."

    Configurations for the PX7522 are easily loaded, edited and saved to NVM
over the device's I2C serial interface using Primarion's GUI. With
configurations stored on the IC, the controller can perform real-time
adjustments to the designer's previously configured settings and thereby
optimize performance accuracy, without the delay of accessing outside memory

    With other technologies, many of these configurable functions would
typically require an external microcontroller. The extensive flexibility
offered by the fully digital control, PMBus interface and user-friendly GUI
allows optimization of the PX7522's power management performance within an
already existing system.

    The PX7522 operates on a single +5V supply and has a switching frequency
range of 150KHz to 1MHz. Accurate sharing between phases (in a single mode
operation) enables the flexibility to support multi-phase operation for
increased power requirements. The PX7522 provides superior accuracy through
internal calibration that measures and corrects system-level current sense
error sources upon startup. The programmable current sense temperature
compensation allows the designer to tailor the response for the best accuracy
over temperature.

    With innovative easy-to-use solutions, offering cost savings and improved
system-level performance, Primarion continues to drive the future of digital
power management and is proving to be the IC vendor of choice for manufactures
in the telecom, datacom, computing, storage and graphics markets.

    Summary of Features:

    --  "Dual-loop" operation: supports two independent outputs at different
voltage levels with single-phase control for each output

    --  "Single-loop" operation: supports a single output with one or two
phases. Capable of current sharing and frequency sync with other controllers
in the family

    --  Wide output range: 0.5V to 8V

    --  Supports both DCR and RDSon current sense topologies with digital
temperature compensations

    --  Compatible with both tri-state and non-tri-state FET drivers

    --  Real-time current, temperature and input voltage sense telemetry

    --  Extensive fault protection and reporting with user-configurable fault

    --  Digital control loop and active voltage positioning (AVP)

    --  Sequencing, margining and tracking of the output voltage over the
serial interface

    --  Configurable PWM generator

    --  Start-up into pre-biased load

    --  PMBus-compatible serial interface (library of 60 core PMBus commands)

    --  Internal voltage and temperature referencing

    --  Internal oscillator (no external reference required)


    Already sampling with top-tier customers, Primarion's PX7522 is available
for general sampling this quarter. The PX7522 is available in a
RoHS-compliant, 6mm-x-6mm 40-lead QFN package.

    More information about PX7522 is available by contacting Primarion at
(866) 321-7746 or by visiting the company's Web site at

    About Primarion:

    Primarion is a mixed-signal integrated circuit company that addresses key
inflection points in power conversion and power management driven by the
exploding demand for digital content and information. Primarion's Digital
Power ICs are positioned to beat traditional analog power ICs in cost per amp,
performance and features with advantages that grow with each new processor
generation. Headquartered in Torrance near Los Angeles, California (USA), the
company also has an Asian regional office in Taipei, Taiwan. Primarion has
received venture funding from eminent venture funds such as Accel Partners,
Lehman Brothers, APV Technology Partners and W Capital Partners. Additional
information is available online at


For further information:

For further information: Primarion Deepak Savadatti, 310-602-5500 Vice
President, Marketing or Media Relations:
Shelton Group for Primarion Helena Ronner or Richard Membreno 972-239-5119,
ext. 142 and ext. 135

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