RDC20110S05

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DC–DC converters act as voltage regulators by taking in power from a larger DC voltage and outputting a different, smaller DC voltage. The RDC20110S05 is one example of such a converter. Being a 10A Synchronous dc dc converter, this device has the capability of regulating and stabilizing a wide range of input and output voltages, making it a perfect fit for a range of different applications.

The RDC20110S05 is a step-down (buck) converter, having the ability to take in input voltages of 4V-18V, 26V-60V, or 48V-125V and appropriately step them down according to the specified output voltage. This device also has the capability to achieve a maximum output current of 10A across the entire input voltage range, making it ideal for industrial applications. With a conversion efficiency of up to 93%, the result of using this device is an exact, high quality output voltage.

The RDC20110S05 works by using a combination of two different conversion techniques, first converting from DC to AC by means of a switching mechanism; and then converting from AC to DC using a filtering method. The first step, referred to as pulse width modulation, is executed through the use of a switch, which alternately applies and removes power from the circuit. This process is heavily dependent on two variables, duty cycle and frequency, which act to create the ‘width’ of the pulses. The duty cycle of this device can be adjusted through the use of an external resistor, while the frequency, which is governed by an on-board oscillator, can be as high as the limit for a given application.

The second conversion takes place when the alternating current from the first process is filtered and rectified, using a circuit of two diodes, two capacitors and an inductor. Each of these components plays an important role in the functionality of this device, with some of them being configurable. For example, the size of the capacitors directly affects the ripple voltage in the circuit, while the size of the inductor will influence the size of output current.

These two steps taken together form the complete conversion process by which the RDC20110S05 operates. Supported by up to 10A of current output, the RDC20110S05 is an efficient and reliable low-voltage regulator, making it suitable for a range of applications including automotive, telecommunications and industrial.

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