IEU0348S15 Power Supplies - Board Mount

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DC DC converters are widely used in many industries for their ability to transfer electric energy from one DC circuit to another with varying voltage and current. The IEU0348S15 is a power electronic converter designed to convert DC input to DC output in a highly efficient and reliable manner. This device is mainly used in space and aviation applications.

The IEU0348S15 converter is a step-down type of converter, operating from a 540 to 800 VDC input. The output voltage can be adjusted from 200 to 360 volts. The design of the converter provides the highest quality of operation and reduces power losses and improves power factor. The integrated full bridge output section works as a DC-DC buck converter providing high efficiency over its entire operating range. The device is mounted on a printed circuit board and housed in a robust metal enclosure with multiple screw terminals for wiring connections.

The converter has four operating modes, depending on the input voltage. In the "ON" mode, the output voltage is maintained at the setpoint. In the "OFF" mode, the output voltage is held at a nominal voltage. In the "Over Voltage mode, the output voltage is reduced to prevent excessive current from flowing through the system. Finally, in the "Phase Control" mode, the output voltage is maintained according to the phase angle of an external target with respect to the applied voltage at the input.

The IEU0348S15 offers an excellent combination of high efficiency and low component count. The power switch is a pair of insulated gate bipolar transistors with a single gate drive, eliminating the need for external drivers for high-side switching. The device also features an internal synchronous rectifier, providing a simplified gate drive design and reduced component count. It also features a high-performance current limiting circuit, allowing it to operate in both high- and low-voltage ranges.

The IEU0348S15 is designed for applications where reliability, temperature, and high input-to-output voltage ratios are a critical concern. It provides an efficient and reliable solution for applications such as high-power DC generators, auto-start motors, power supply units, and AC loads. In addition, it is designed for applications where a high-quality output voltage is required, such as in lasers, medical equipment, and process control systems.

The working principle of the IEU0348S15 is based on the concept of pulses, where the input voltage is switched on or off as needed in order to maintain the required output voltage. It is a “self-adaptive” converter which can be easily calibrated through a programmable parameter adjustment. The conversion process is optimized for the best gains in efficiency, by ensuring that the power is utilized most effectively during the different switching transitions.

The IEU0348S15 offers an efficient and reliable solution for a range of demanding applications including space and aviation, thanks to its high efficiency, wide input voltage range and low component count. It is designed with protection features to protect the components from voltage and current transients, and ensures that the required output voltage is maintained with high quality and accuracy.

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