Primarion Offers Dual Output Digital Synchronous DC-DC Controller

Primarion announced the addition of the dual-output, dual-phase PX7522 to the Primarion Di-POL™ 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 0.5 to 8V. This highly configurable control IC utilizes PMBus™ and on-chip non-volatile memory (NVM) for extensive user-friendly control and real-time system monitoring.

"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 storage. 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 is claimed to provide 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.

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.