VI-B1W-IV

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DC-DC converters are devices used to transform direct current from one voltage level to another. The VI-B1W-IV is a DC-DC converter from the SPH family of converters, which is known for its high efficiency, low noise output, and wide input range. In this article, we will explore the application field and working principles of the VI-B1W-IV.

Application Field

The VI-B1W-IV is a high frequency, isolated DC-DC converter, designed for applications where a low output voltage, wide input voltage range, and high efficiency are needed. It can be used in a wide range of applications from automotive and industrial to medical and communication.

In automotive applications, the VI-B1W-IV can be used to reduce power consumption of ECU (Engine Control Unit) and similar modules, while still providing a reliable 12V regulated output at up to 3A. In industrial applications, it can be used for voltage regulation or power distribution in a wide range of machine control systems. It can also be used in medical equipment to reliably provide a constant power supply to sensitive medical instruments.

Working Principle

The VI-B1W-IV is a step-down, switched-mode DC-DC converter, meaning it is capable of transforming a higher DC voltage into a lower one. It uses an oscillating feedback loop, in which an inductor and a switch are used to convert the input voltage into an output voltage. The main benefit of a switched-mode power supply is its excellent efficiency, due to the use of high-frequency switching, as opposed to the more power-hungry linear regulators.

The VI-B1W-IV is designed with a synchronous rectification topology, in which the main switch is replaced with two MOSFETs, one of which is controlled by the oscillator. This ensures that the output voltage is always regulated to the desired level, with low noise and high efficiency. The VI-B1W-IV is also designed for a wide input voltage range (4-18V) and can provide an output voltage of up to 12V.

The VI-B1W-IV also features cycle-by-cycle current and output voltage protection, ensuring that the output voltage is kept within a safe range at all times. This makes the converter suitable for use in applications with power quality concerns. Furthermore, the VI-B1W-IV features a self-startup circuit, which ensures that the oscillation frequency is always stable, independent of the load.

Conclusion

The VI-B1W-IV from SPH is a high frequency, isolated DC-DC converter, designed for applications that require a wide input voltage range and high efficiency. Its synchronous rectification topology ensures a low noise, high efficiency output, which is protected by current and voltage protection circuits. The VI-B1W-IV can be used in automotive, industrial, medical, and communication applications, including ECU and power distribution systems.

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