R15P09S/X2

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DC/DC converters are widely used in industry for providing voltage, current, or power conversion of electric energy either from one DC power source (input) to another DC power source (output) or from a DC power source to an AC power source. The R15P09S/X2 is an industrial-grade, high-performance, DC/DC converter specially designed for use in harsh environments. It provides improved transient response and excellent thermal performance. This article will provide an overview of the R15P09S/X2\'s application field and its working principle.

Application Field and Working Principle

The R15P09S/X2 is typically used in enterprise and industrial computer power systems and Telecom Base Station power systems. Thanks to its wide input voltage range from 9 to 18V, the R15P09S/X2 can be used in a variety of applications. It is also capable of supporting both isolated and non-isolated DC/DC conversion with a power capacity from 0.45W to 15W. The working principle of the R15P09S/X2 is based on the switching converter topology. Specifically, this DC/DC converter utilizes a switching current regulator that converts input power to output power, and a single-resonant constant current controller which maintains the output current at a constant level by switching the output transformer between forward and reverse direction.

The R15P09S/X2 is designed with four major components — an input filter, an input current limiter, an input normal bypass field effect transistor (FET), and an output filter — to provide complete isolation and high performence without the need of an external transformer. The input filter provides a low impedance path to reduce in-rush current and noise. The input current limiter prevents the input current from increasing too quickly and thus is able to protect the switching elements from destruction. The input Normal bypass FETs switch the primary and secondary sides of the transformer according to the input voltage to reduce turn-on stress and to keep input power supply from collapsing. The output filter provides a noise-filtering path from the secondary side of the transformer and limits the output voltage ripple to lower than 5% of the output voltage.

All of these components work together to allow the R15P09S/X2 to provide superior performance. When the input voltage is low, the switching elements are disabled, allowing the input current to bypass the transformer and flow directly to the output. When the input voltage is high enough to drive the switching elements, current will be limited by the input current limiter and flow through the transformer, so that the output power is kept constant. In effect, the R15P09S/X2 is able to maintain the load current regardless of the input voltage. This allows the R15P09S/X2 to provide excellent load regulation and minimal input-output voltage variation.

Conclusion

The R15P09S/X2 is a high-performance DC/DC converter designed for enterprise and industrial applications. Its design consists of four major components, each of which has an important effect on the performance of the converter. The combination of the input filter, the input current limiter, the input bypass FET, and the output filter allow the R15P09S/X2 to provide superior performance in terms of load regulation and minimal input-output voltage variation. It is a perfect choice for applications in harsh environments.

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