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DC DC Converters

DC-DC, or direct current-direct current conversion, is a type of power conversion device that converts one DC voltage level to another. DC-DC converters are used in numerous applications ranging from small, portable electronic devices to commercial electric utility systems. They are also commonly used in systems where two or more DC voltages are required, such as in mobile communications or computing systems.

The VE-B0Y-CX-B1 is a type of DC-DC converter made by the Japanese manufacturer Varitronix. It has voltage ratings of +35/–17V for the input and +24/–12V for the output. This DC-DC converter is suited for applications in the automotive, industrial, military, and transportation sectors.

Working Principle

The VE-B0Y-CX-B1 is a synchronous rectification DC-DC converter that operates in either buck, boost, or buck-boost modes. It employs several elements, including a high-side MOSFET, a high-side gate drive, and a low-side MOSFET.

The operation of the VE-B0Y-CX-B1 begins with the high-side MOSFET. This is a 4-Amp, 55-Volt N-Channel MOSFET, meaning it has an open gate voltage of 55-V, and a current capacity of 4-A. This MOSFET is responsible for enabling or disabling the high-side gate drive, depending on the input voltage provided by the user.

The high-side gate drive contains two components: a ditch driver and a programmable output voltage. The driver allows for the output voltage to be adjusted, either up or down, depending on need. For example, if the output voltage needs to be increased or decreased, the user can use the programmable output voltage to adjust the voltage value. The programmable output voltage also works in conjunction with the low-side MOSFET to control the output power.

The low-side MOSFET is a 4-Amp, 17-Volt P-Channel MOSFET. This device operates in parallel with the high-side MOSFET to provide an output voltage that is between +24V to –12V with a current rating of 4-A. The low-side MOSFET works together with the high-side MOSFET to control the voltage of the output, depending on the programmable output voltage.

The VE-B0Y-CX-B1 is a highly efficient DC-DC converter. When used in buck mode, it can achieve a high efficiency of up to 98%, and in other modes, the efficiency is an impressive 95%. The converter has a switching frequency of 1.2 MHz and a typical rise and fall time of 3 μs max.

Applications

The VE-B0Y-CX-B1 is commonly used in various automotive applications, such as onboard inverters, safety systems, and navigation systems. It is also used in military, industrial, and transportation systems. The converter can also be used for other applications, such as factory automation, medical operations, and building automation.

The VE-B0Y-CX-B1 is a high-efficiency, low-noise DC-DC converter that is highly reliable and suitable for a wide range of applications. It is capable of operating in buck, boost, or buck-boost modes, making it an ideal choice for virtually any power conversion task.

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