VEFT1-S5-S12-SMT-TR Power Supplies - Board Mount

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DC-DC converters are electronic devices that convert direct current (DC) input signals into alternating current (AC) output signals by using a variety of topologies. Among these, VEFT1-S5-S12-SMT-TR (variable-frequency enhanced-temperature stabilization-stabilized multi-turn-transverse ripple) topology is one of the most popular ones used in applications requiring high power and high operating temperature ranges. This article aims to elaborate on the application field and working principle of this topology.

VEFT1-S5-S12-SMT-TR topology is primarily used for input ranges of 10V to 500V (maximum conventional 28V) and output ranges of 0 to 180V (maximum conventional 55V). They are particularly suitable for input voltage/output voltage ratio greater than ratio 10:1. They can convert power ranging from 100W up to 1kW without requiring any addition of enhancement components and achieve high power conversion efficiency of up to 98%. This high power efficiency is made possible by the combination of the variable frequency technique, enhancement of temperature stabilization, and transverse ripple stabilization.

The working principle of VEFT1-S5-S12-SMT-TR DC-DC converters is quite simple. It uses a two-stage conversion process. First, the input DC voltage is converted into a variable frequency PWM signal. This PWM signal is then used to drive an isolated full-bridge DC-DC converter. The output from the full-bridge converter is a stabilized DC voltage that is then used as the final output.

In addition to this two-stage conversion technique, the use of variable-frequency technique, temperature stabilization, and transverse ripple stabilization add to the efficiency and stability of the converter. The variable-frequency technique is used to reduce the switching losses and to reduce the electromagnetic interference (EMI) associated with the converter. The enhancement of temperature stabilization further enhances the thermal performance of the converter and ensures its long-term reliability. Finally, transverse ripple stabilization allows for the conversion of high frequency ripple into low frequency ripples, thus ensuring smoother output.

In conclusion, VEFT1-S5-S12-SMT-TR DC-DC converters are intended for use in applications requiring high power, high efficiency, and high operating temperature ranges. This topology provides superior power conversion efficiency, and its use of variable frequency technique, temperature stabilization, and transverse ripple stabilization add to its stability and performance. It is most suitable for applications such as automotive, data processing, and audio amplifiers.

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