QRW025A0F41-H

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DC-DC converters are devices commonly used in many industries for providing energy in the form of electric currents. A typical application is the conversion of a power voltage from one range to another, often from low to high voltage. An example of this type of device is the QRW025A0F41-H. This specific converter model is a high-quality, digitally-controlled DC-DC converter featuring an adjustable output voltage range from 11V to 48V and an input voltage of 12V to 24V.

The QRW025A0F41-H provides a performance-oriented design, with optimized efficiency, wide input range, high output accuracy, and excellent transient response. It also features low EMI noise design, high MTBF, basic output frequency adjustable rate, adjustable soft start current and output overcurrent protection. Furthermore, the overload protection circuitry functions by either limiting the output current or by latched shut-down mode.

It is a synchronous buck converter designed for step-down voltage adjustment, allowing a high-voltage source to be converted to a low-voltage source. The input voltage source is fed into the primary side of the transformer, where the magnetic flux allows for the induction of a voltage in the secondary side of the transformer. This secondary voltage is then filtered out and connected to an output stage, in which the switch is under the control of the oscillator. The PWM (pulsewidth-modulated) oscillator signal is generated by the control circuit which corresponds to the output voltage requirement.

During normal operation, when the switching FETs (field effect transistors) are off, the instantaneous output current is delivered by the output inductor, while during high peak-load periods, no current is discharged from the inductor due to the switching FET being off. When the switching FETs turn on, the power is supplied to the load from the transformer, and the output inductor current begins to decrease. This current is then re-used by the output capacitor and the load, with the chain of events creating a steady-state output current.

As a summarization, the QRW025A0F41-H is able to step-down a source voltage seamlessly, while regulating its output with optimal efficiency, accuracy, and transient response. It is also highly reliable, having both current and latching shut-down protection. Because of these advantages, the QRW025A0F41-H is widely used in telecom services, industrial automation, industrial control systems, distributed power systems, cloud back-up systems, and other applications.

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