FS1525 µPOL™ DC/DC Power Module

TDK expands its µPOL family of non-isolated DC/DC power modules with the addition of FS1525. This 3.82 mm high point-of-load (PoL) converter delivers up to 25 A and is engineered to meet the demanding requirements of AI servers, edge computing, and data center systems. By stacking or paralleling several FS1525 modules, they can deliver 200 A combined in vertical power delivery designs. This is a novel approach in which the PoL converters are located directly under the FPGA/SoC or ASIC on the backside of the PCB.

Leveraging advanced 3D chip-embedded package technology, the FS1525 integrates all critical components, including a controller, driver, MOSFETs, digital core, memory banks, bypass capacitors, and power inductor, into a single component with a footprint of 7.65 mm x 6.80 mm (L x W). The thermally enhanced architecture, with a thermal impedance of 1.4 K/W, delivers superior current performance, outperforming conventional solutions at high ambient temperatures while simplifying PCB routing and enabling high-density power architecture.

FS1525 has a fast transient response, low ripple, and true differential remote sensing to ensure accurate voltage regulation at the point of load. Digital programmability via I²C and PMBus enables real-time telemetry, adaptive tuning, and fault management for voltage, current, and temperature monitoring, critical for dynamic AI workloads. The module also offers analog V_OUT settings tailored to leading FPGA/SoCs and ASICs, supporting advanced features such as the Altera SmartVID for Agilex FPGA series.

The µPOL module integrates seamlessly with modern computing form factors, including PCIe®, VPX, SMARC, and 1U to 3U rack systems, providing high flexibility for system designers. It is already deployed in proven designs for FPGA/SoCs such as Altera Agilex, AMD Versal Edge, and AMD-Xilinx platforms, including Zynq UltraScale+ MPSoC and Versal ACAP, widely used in AI and machine learning applications.

As part of the TDK comprehensive µPOL portfolio spanning 1 A to 200 A, the FS1525 offers a unified system-level power solution. With plug-and-play simplicity and no external compensation required, it accelerates development cycles, reduces design complexity, and lowers overall system cost. More than a power module, the FS1525 represents a complete power ecosystem designed to drive the future of intelligent computing. Evaluation boards for 25 A and 50 A are available. Stackable boards for 100 A and 200 A are available upon request.

Versal is a registered trademark of AMD. Agilex is a registered trademark of Altera.