XP Power Rolls Out 1.3 kW Fully Digital AC-DC Power Supply

XP Power is introducing the FLXPro Series with a 1.3 kW configurable AC-DC power supply. Today’s power supply designers often face challenges balancing size, thermal performance, configurability, and compliance. The FLXPro Series offers a path forward on these issues via its scalable and intelligent platform. The power systems are suitable for industrial technology, semiconductor manufacturing, renewable energy systems, robotics, and automation.

The FLXPro series for semiconductor manufacturing, renewable energy systems, and more. Image used courtesy of XP Power

FLX1K3 Specifications

The first release in the FLXPro Series is the FLX1K3, which delivers up to 1.3 kW at high-line input and 1.0 kW at low-line for a peak power density of 23.2 W/in^3 within a 254.0 x 88.9 x 40.6 mm chassis. It leverages a fully digital architecture that spans both the input stage and output modules and uses SiC/GaN-based switching technology to reach efficiencies up to 93%. At the same time, it maintains full power delivery up to +50°C and supports operation across a -20°C to +70°C ambient range.

Designed for modularity, the FLXPro supports up to four independent output modules with nominal voltages ranging from 9 VDC to 66 VDC. These modules can be configured in series or parallel combinations to meet application-specific voltage and current demands. Output voltage adjustment is possible across a +10% to -40% range, with control available through potentiometers or digital interfaces via PMBus over I2C.

Diagnostic capabilities are central to the FLXPro series. The unit integrates XP Power’s iPSU (Intelligent Power) technology to convert internal telemetry into actionable insights. The XPInsight GUI provides real-time access to output performance, environmental data, and historical logging via an intuitive interface. Features include the Black Box Snapshot diagnostic function, multiple internal temperature sensors, and tri-color LED status indicators with an onboard truth table.

Input derating curve of the FLXPro Series PSUs. Image used courtesy of XP Power

Standard features for the PSU family include ES1-rated isolated digital communication, remote inhibit for both global and module-level control, fan-failure and overtemperature warnings, current sharing synchronization, and configurable alarms. Isolation is rated at 4,000 VAC from input to output, and the unit complies with IEC60601-1 and IEC62368-1 safety standards, including 2 x MOPP for medical applications and SEMI F47 for semiconductor manufacturing.

PMBus over I2C for PSU Communications

Power supply systems today are smart, which means digital communication protocols are needed to provide the means to control, monitor, and optimize performance in real time. The power management bus (PMBus), built on the I2C physical layer, is a popular protocol choice in this context due to its standardization, flexibility, and support for telemetry.

At the highest level, PMBus facilitates two-way communication between system controllers and power supplies to allow designers to program output voltages, current limits, and protection thresholds while retrieving live system metrics such as voltage, current, temperature, and fault statuses. In applications with dynamically changing loads or stringent uptime requirements, PMBus affords the system the flexibility it requires.

Operating over I2C, PMBus offers simplicity in physical wiring and broad compatibility with embedded systems. For example, it supports multiple devices on the same bus and uses a defined command set that guarantees interoperability among PMBus-compliant components. That thereby unlocks centralized control of multiple power rails and rapid fault isolation.

In systems like XP Power’s FLXPro, PMBus enables intelligent power management. By supporting features such as current sharing, synchronized startup, and configurable fault responses, PMBus empowers developers to implement system-level behaviors that were previously difficult to achieve with analog controls.

A New PSU Option

The FLXPro Series introduces a level of adaptability and intelligence that can meet today’s power system designers’ needs. By integrating a digital control backbone, advanced monitoring interfaces, and support for real-time reconfiguration, the platform is a strong option for those looking to design smarter, more connected infrastructure. The FLXPro Series is available through authorized regional distributors or directly from XP Power and includes a three-year warranty.