BXA30-48S05

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DC–DC converters are electronic circuits used to convert a source of direct current (DC) from one voltage level to another. They are widely used for power supply conversion as they provide the flexibility of adapting the voltage output of the source to the load requirements. Specifically, the BXA30-48S05 is a synchronous step-down DC–DC converter featuring an 87.5% peak efficiency with a wide input voltage range from 20V to 48V and an adjustable output voltage range from 0.8V to 40V. This product operates at a constant frequency up to 1MHz with voltage mode PWM control, offering excellent load and line regulation.

The BXA30-48S05’s application field covers a variety of applications such as telecom equipment, networking systems, distributed power systems, and battery management systems. Thanks to its relatively high efficiency and wide input/output voltage range, this converter is able to achieve maximum power density even at very low output voltages. In addition, this product offers a high-accuracy output voltage, and adjustable output enable/disable or soft-start features which make it suitable for use in a wide range of industrial applications requiring high power-delivery capability in a compact size.

The working principle of the BXA30-48S05 converter is relatively simple. In operation, the primary winding of the transformer is energized from the input DC voltage source. The primary current creates a time-varying magnetic field that induces a voltage in the secondary winding. As this voltage is regulated, it is rectified and filtered to provide a DC output voltage. The synchronous mid-point architecture of this converter allows for the adjustment of the output voltage by sensing the mid-point of the transformer with the peak current-mode PWM control. This control maintains poles and zeros used to improve the transient response and overall stability of the converter.

In general, the BXA30-48S05 converter offers a lot of advantages in terms of efficiency, power density, and voltage range. Its peak efficiency of 87.5% can be achieved thanks to the synchronous rectification technology and to its wide-input/output voltage range, allowing for higher efficiency operation at very low output voltages. Additionally, its high-accuracy output voltage and adjustable enable/disable or soft-start features make it suitable for demanding industrial applications while its compact size allows for easy integration.

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