Develop high-performance 600 W DC-DC converters with EVAL-600W-FBFB-XDPP-TOBO1, featuring XDPP1100 digital control, PMBus functionality, and flux-balanced full-bridge design.
The EVAL-600W-FBFB-XDPP-TOBO1 Power Supply Kit is a 600 W full-bridge to full-bridge DC-DC evaluation board designed for telecom, server, and high-performance SMPS applications. It converts a 42-75 V input into a stable 12 V/50 A output, making it ideal for engineers seeking to evaluate digital power controller features and develop high-efficiency, reliable power systems.
At the heart of the kit is the XDPP1100-Q024 digital power controller, the smallest controller in its class, providing precise digital regulation, PMBus-ready functionality, and flux-balanced control for optimal performance. The controller drives Infineon OptiMOS™ 5 100 V and OptiMOS™ 6 40 V MOSFETs via dual-channel EiceDRIVER™ gate drivers, implementing a full-bridge isolated topology for efficient power conversion.
Engineers can fully configure and monitor the board using the EVAL_XDPP1100_Q024_DB daughter board and a USB-I2C dongle (USB007A1) through a user-friendly GUI, enabling rapid testing of control parameters, fault handling, and real-time performance analysis.
Compact yet versatile, the EVAL-600W-FBFB-XDPP-TOBO1 provides a complete platform to prototype and optimize high-power DC-DC designs, evaluate cutting-edge digital controller features, and accelerate time-to-market for modern industrial, telecom, and server power applications.
The power stage is a hard-switching full-bridge to full-bridge (FB-FB) DC-DC converter. It connects to the XDPP1100 digital controller daughterboard through two board-to-board rectangular connectors. Voltage mode control (VMC) is implemented for output voltage regulation to convert the input voltage range of 42V–75V DC to an output voltage of 12V DC. While a fan is not included in the evaluation kit, a minimum of 400 LFM airflow is required to cool the power stage.
The power board consists of a full-bridge converter with full-bridge synchronous rectification (SR), isolated through a planar transformer, a non-dissipative snubber, and an auxiliary power supply. The planar transformer provides isolation between the input and output with a 3:1 turns ratio. It allows versatile polarity configurations and grounding connections for the input and output terminals. Below VIN = 42V, the converter will lose 12V regulation, and the output voltage will drop to around 10.8V at VIN = 36V. However, it can still provide the full load current. The output current is sensed using a small PCB copper shunt, saving power loss and the cost of a precision sense resistor.
The main Infineon components used in the 600W FB-FB evaluation board are:
Published : 28st August 2025
