VI-21H-CV-F4

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DC-DC converters, such as VI-21H-CV-F4, are devices used to regulate voltage levels for various applications. These converters are designed to covert a DC voltage from one level to another, while providing very high accuracy and efficiency.

The VI-21H-CV-F4 model from Vicor Corporation is an isolated DC-DC power converter with an input voltage of 12 to 15 VDC, and an output voltage of 48 VDC. The high-efficiency buck converter has a wide input voltage range, a wide output current range, an optimized thermal design, as well as a very low quiescent current (<100 uA). This converter also features a shielded package, input under-voltage protection, a soft start and current limit function, as well as an external enable function.

The principle of operation of the VI-21H-CV-F4 is based on voltage transformation. When the input voltage is applied, the IC inside the converter steps down the input voltage to the necessary level, and then regulates it to the required output voltage. This is done by using a switching circuit, which switches the connection between the input and output stages. The switching voltage is regulated by changing the duty cycle of controls signals, which makes the output voltage constant.

The main applications of the VI-21H-CV-F4 converter are in automotive, communications, and motor drive systems. It can be used to convert a 12V automotive battery to 48 V for powering low-voltage motor drives, to provide a constant voltage rail in communication systems, or for powering 48V DC systems such as telecom servers and storage arrays. In all these applications, the main purpose of the converter is to regulate the input voltage to provide the required working voltage.

The VI-21H-CV-F4 converter is a reliable and efficient power regulator, and it can be easily integrated into a variety of systems. With its wide input and output voltage range, optimized thermal design, and very low quiescent current, it is a valuable solution for many applications.

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