VE-BTY-MW

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DC-DC converters are designed to convert an input voltage into an output voltage with increased or decreased voltage and current levels. A wide variety of applications exist for DC-DC converters, including uses in the automobile, telecommunications, aerospace, and industrial sectors. They are also used for high-voltage situations such as power over Ethernet (PoE) systems, as well as when higher precision or efficiency are required.VE-BTY-MW is a DC-DC converter which works by utilizing a switched inductor in a buck-boost topology combined with a synchronous rectifier. The designers of the VE-BTY-MW application field wanted to use an inductor to convert the input voltage at a higher level of efficiency than if a simple linear regulator had been used.The working principle of the VE-BTY-MW is based on the fact that a switched inductor can be used to effectively regulate the input voltage by storing energy. The converter essentially forms an ‘inductive reservoir’ which charges and discharges depending on the input and output voltage levels and the state of the switches of the inductor. The basic structure and operation can be explained by considering the equivalent circuit of the VE-BTY-MW the diode, inductor, and capacitor.The inductor stores energy in the form of magnetic field energy during conduction and is discharged when the switches open. If the inductor stores energy, the output voltage will be higher than the input voltage. If the inductor dumps energy, the output voltage will be lower than the input voltage. The capacitor provides additional energy storage and helps to smooth the output voltage ripple.The diode acts as a rectifier, and operates as a synchronous rectifier in the VE-BTY-MW allowing for higher efficiency and improved power density. The synchronous rectifier is controlled by the switches of the inductor, and synchronizes itself to the switching frequency of the inductor to maximize efficiency.The operation of the VE-BTY-MW can be explained by the following basic steps:1.The current control switch of the VE-BTY-MW is set to the desired output voltage range.2.The inductor and capacitor begin to charge when the switch is opened. 3.As the inductor and capacitor charge, the synchronous rectifier is closed and energy is transferred from the inductor to the capacitor.4.The current control switch is closed when the desired output voltage is reached. 5.The synchronous rectifier opens when the desired voltage is reached, and begins to discharge the inductor and capacitor.6.The inductor and capacitor now begin to discharge and the output voltage is reduced until the current control switch of the VE-BTY-MW is opened again.7.The cycle then begins anew and the desired output voltage is reached again.The VE-BTY-MW DC-DC converter is a high efficiency solution for applications where a stepped up or stepped down voltage is required. With its synchronous rectifier, it is also able to achieve power densities which are higher than traditional linear regulators. The VE-BTY-MW offers a wide variety of applications, including automotive, telecommunications, aerospace, and industrial, that require the ability to adjust the voltage level of an input source.

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