VI-212-IW-S

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DC-DC converters are useful when providing power to electrical systems from multiple sources. The VI-212-IW-S is a step-up converter specifically designed for low input voltage applications. This article will discuss the appliance field and the working principle of the VI-212-IW-S.

Applications Field

The VI-212-IW-S is a highly efficient, step-up converter with an input range of 1.7V to 8.5V. This is useful in applications where the input voltage may sometimes be lower than required. With an output voltage range of 2.5V to 16V, it is ideal for applications such as DC/DC converters, power supplies, portable electronics, industrial and automotive power systems, medical systems, and consumer electronics.

Since the VI-212-IW-S can transform voltages from the input range into higher output voltages, which is extremely useful in voltage stability applications, and it also has a large range of input current, meaning that it can support a wide range of load currents. This makes it highly versatile and reduces the need to procure multiple different converters.

The VI-212-IW-S is also designed to operate at low noise levels, making it suitable for acoustic sensitive applications like hearing aids, music players, and other audio-related equipment.

Working Principle

The workings of the VI-212-IW-S can be divided into three distinct stages, namely the input stage, the regulation stage, and the output stage. These stages work in unison to provide a consistent, clean output voltage, regardless of the input voltage or load current.

In the input stage, an oscillator creates an alternating current at a frequency of up to 5MHz. This alternating current is sent through an opto-isolator and rectifier, which separately rectify the positive and negative peaks and convert them into direct current at the isolated input voltage.

In the regulation stage, the direct current is filtered and fed into a pulse-width modulator. This device compares the input voltage to a reference voltage, and generates a digital output pulse whose width is proportional to the difference between the two voltages. This pulse-width is then used to control an n-channel MOSFET switch, which produces a single-ended output voltage.

In the output stage, the single-ended output is further filtered and regulated by an internal control circuit in order to produce the desired output voltage. Additionally, it provides a buffered output voltage, which is useful for high power applications, as it serves to minimize power losses.

The VI-212-IW-S is a highly efficient converter, with a typical efficiency of up to 90%. It is also designed to shut down when the output current is over its specified maximum, which ensures safety and can help extend the life of the converter.

Conclusion

The VI-212-IW-S is a highly efficient, step-up DC/DC converter that is capable of transforming voltages from its input range into higher output voltages. It is ideal for a range of applications, including DC/DC converters, power supplies, portable electronics, industrial and automotive power systems, medical systems, and consumer electronics. It has a large range of input current, low noise levels, and a typical efficiency of up to 90%, which makes it a highly versatile and reliable converter.

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