VI-21K-CU-F4

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DC-DC converters are ubiquitous in modern applications, providing the bridge between alternating current (AC) and direct current (DC). VI-21K-CU-F4 is a type of DC-DC converter, which utilizes advanced power electronics to efficiently convert input DC into output DC. This technology is essential in a variety of applications such as communication systems, aerospace, and marine uses.

The VI-21K-CU-F4 adopts a powerful boost rectifier-inverter structure which enables up to 90% efficiency, excellent temperature curve performance and improved output power ability. It has a unique, plug-in design that streamlines the installation process and eliminates the need for complex wiring. The full suite of electronic protection features, such as short circuit and overtemperature-protection, ensure reliable operation for the converter in a wide variety of different applications.

The VI-21K-CU-F4 operates on an input DC voltage of 100~400V, and supplies three-phase output DC voltage and current up to 16.5A and 21kV respectively. As a buck-boost type of DC-DC converter, it provides a smooth transition between input and output voltages regardless of the load type. Thanks to its innovative auto-stop circuit protection feature, the unit acts as an “unfuse”, allowing it to quickly shut down in case of an overload situation.

When it comes to working principles, the VI-21K-CU-F4 does not require any external components for operation other than the power source and the output load. Rather, it works on the principle of pulse-width modulation (PWM) to alter the output voltage. With a boost rectifier-inverter structure, this is done by passing a high-frequency current through the inductance coil of the transformer, which then induces a voltage change on the output side. By adjusting the duty cycle, the output voltage can be increased up to the designated output. This feature, along with the wide input voltage range, enable the DC-DC converter to achieve high-efficiency levels.

Thanks to its reliable performance, the VI-21K-CU-F4 has become the ideal choice for medium-scale applications that require efficient power conversion. From power conditioning for PV systems and UPS facilities to rail-transit systems and marine vessels, the VI-21K-CU-F4 has been adopted by various industries. With its superior efficiency and features like the auto-shutdown circuit protection and smooth transition between input and output voltages, the VI-21K-CU-F4 is well-positioned to become the converter of choice for many of these applications in the future.

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