VHB75-D12-S12

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DC-DC Converters are an important constituent in modern power systems. The VHB75-D12-S12 is a prime example of these systems, designed to provide reliable power conversion and efficient load regulation. The VHB75-D12-S12 is a step-up converter, with a maximum input voltage of 12V and an adjustable output of 9 to 75V. It is designed for industrial and automotive applications and has a host of features such as overvoltage protection, adjustable thermal protection, low start-up voltage, and current limit functions.

The VHB75-D12-S12 employs a voltage switch mode topology, consisting of an input rectifier, a full bridge commutator with active switches, and a main switch-mode converter. The input rectifier has a rectification period of 40 microseconds. During this period, the incoming AC line voltage is rectified to the necessary DC voltage, which is then stored in the energy storage capacitor. The full-bridge commutator uses fast active switches to convert the DC voltage into an alternating voltage. This alternating voltage is fed into the main switch-mode converter, which takes alternating voltage signal and converts it into a fixed DC voltage.

The main switch-mode converter in the VHB75-D12-S12 uses a buck-boost regulator topology. This topology is based on the principles of induction. The main inductor in the converter acts as an energy storage element, providing a continuous supply of energy to the output load. The output voltage is regulated by a control loop, which periodically switches the main switch of the converter and adjusts the duty cycle according to the load condition. This switching operation results in an alternating voltage, which is converted to a fixed DC output voltage by a series of rectifiers and filters.

The VHB75-D12-S12 has a wide range of features, such as soft start, overvoltage protection, and adjustable thermal protection. It also has adjustable current limit functions which prevent the converter from overloading. As such, it is suitable for various kinds of applications, ranging from automotive to industrial, including test and measurement equipment, consumer electronics, renewable energy systems, and industrial control systems.

The VHB75-D12-S12 is designed for cost-effective and robust operation, and is suitable for use in a wide range of applications. Its versatile features and adjustable output voltage make it an ideal choice for a variety of needs. In addition, its compact size and efficient operation make it a cost-effective solution for low-to-medium power DC-DC conversion.

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