VI-21Z-EX-S

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DC DC Converters: VI-21Z-EX-S Application Field and Working Principle

DC DC Converters is an electronic device used for power conversion, to change and control the voltage and current of an electrical system or device. The VI-21Z-EX-S DC DC Converters is designed for extreme high-temperature and vibration applications. It offers a unique combination of high-repairability, high-performance and an extended operating temperature range.

The VI-21Z-EX-S series DC-DC converter is designed to support wide input voltage range (of 85V - 400V DC). The variable voltage outputs range is 0V - 80.50V DC.

The VI-21Z-EX-S series converter contains a brushless, self-clamping, open-loop circuit. The main benefit of this circuit is that it does not need any external components for operation. Instead, the permanent magnet creates a magnetic field in the primary winding of the transformer core. A pair of MOSFET switches control the magnetic field and clamp the voltage. The output is controlled by the duty cycle of the PWM, which allows for adjustable current and voltage control.

The VI-21Z-EX-S series converter is typically used in applications such as high altitude aircraft, harsh environment defense, transportation, robotics, and other industrial applications. Its characteristics make it suitable for applications in which an extremely light source is required, and where failure rates need to be minimized through effective protection against voltage and current spikes.

The applications of the VI-21Z-EX-S DC DC Converter include, but are not limited to:

• Robotics: The converter can be used to power robots with improved power efficiency and controlled currents.
• Avionics: The converter can be used to provide power in onboard avionics systems or aircraft cockpits, which require the component to be able to withstand extreme temperatures and other environmental conditions.
• Industrial Automation: The converter can be used in industrial automation to provide improved reliability and control over the voltage.
• Consumer Electronics: The converter can provide a lower-cost, reliable source of power for consumer electronics.

The working principle of the VI-21Z-EX-S DC DC Converter is based on a control and adjust the voltage and current provided to the load with the help of the PWM (pulse width modulation). The converter is capable of converting the voltage from the AC (alternating current) to the DC (direct current). The power supply connected to the primary winding of the transformer core changes the voltage and current levels on the secondary windings in an alternant manner. The voltage is controlled by varying the pulse width and the frequency of the PWM. The current is controlled by adjusting the duty cycle of the PWM.

The VI-21Z-EX-S DC DC Converter is protected against over-voltage, under-voltage, short-circuit, and reverse input voltage conditions. It is equipped with EMI/RFI filter for improved EMI performance. Its specialty of supporting wide voltage range allows the converter to work in a variety of conditions, including high temperatures, vibration, and humidity.

In conclusion, the VI-21Z-EX-S DC DC Converter is an efficient and reliable device for power conversion. Its unique combination of features makes it suitable for both extreme environment and robust industrial applications. Its wide input voltage range and adjustable current and voltage control makes it a versatile choice to suit a variety of applications.

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