QL48T30012-NBA0

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DC-DC converters are electronic components used to modify, regulate, or reduce the input voltage of the electricity to control or convert the DC output power. Specifically, QL48T30012-NBA0 DC-DC converters are compact, high efficiency, high power density converters from TDK-Lambda. This converter contains the features, performance and safety regulations that make it suitable for use in a wide variety of applications.

The QL48T30012-NBA0 DC-DC converter can provide 24V/ 220A or 27V/ 180A from a nominal 48V input. Features include 1,500 VDC isolation, input under-voltage protection, output voltage adjustable by up to ± 10%, remote on/off control, and over-temperature protection. The converter also contains two port connections: terminal screws and two 5.08 mm interface for power entry/exit or connector interface. Furthermore, the compact, convection cooled design, combination of power density and full internal protection make this converter ideal for use in a wide variety of applications.

The QL48T30012-NBA0 offers two internal high-frequency switching devices, an optically isolated feedback and two sets of two series compensated outputs. Designed to minimize the need for external components such as transformers and inductors, the converter can deliver low output ripple and high peak output current capability. Working within an extended temperature range of -25°C to +65°C (cold start down to - 40°C maximum), the strong reliability and performance makes this converter suitable for applications such as robotics, automation, communications, and power supplies.

The unique working principle of the QL48T30012-NBA0 converter comes from the combination of two sensing stages and the feedback loop amplifier. The two sensing stages measure and regulate the output current or voltage using a voltage feedback signal from a discrete resistor or a voltage compared to ground. This signal is then amplified and sent back to the output control stage to adjust the output power level. In addition, a second sensing stage acts as the current regulation loop and also provides protection from overload.

With a maximum continuous power of 260W, the QL48T30012-NBA0 DC-DC converter offers high efficiency, high power density, and robust isolation, making this converter suitable for a variety of applications. It provides an adjustable voltage output and features a compact design with convection cooling for enhanced reliability. The two-stage sensing and feedback loop amplifier provide precise output current or voltage control for the desired power level and effective overload protection.

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