ISH1212A-H

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DC DC Converters

DC-DC converters, such as the ISH1212A-H, are increasingly common for applications requiring variable speed, polarity reversal, or multiple current sources. These devices convert a single DC input voltage to multiple independently-controlled output voltages. DC-DC converters are widely used in power supplies, aerospace, automotive, and communication networks. A comprehensive understanding of the working principle of the ISH1212A-H can help engineers design more efficient systems.

The ISH1212A-H family consists of four isolated DC-DC converters with regulated and adjustable output voltages of 0.3V to 5.5V. These converters are constructed with an input voltage of 12V and maximum output power of 1.2W. The key features of the ISH1212A-H family include its high efficiency, high power density, and high EMI immunity. The integrated control circuit features a thermal shutdown circuit and low output voltage ripple. The device also features an output disconnect and power-good signal.

The working principle of the ISH1212A-H is based on a buck (step-down) topology. This topology consists of an inductor, a diode, and a switching device such as a MOSFET. The inductor stores energy from the input voltage, while the diode controls the direction of the current flow. The switching device acts as an on/off switch for the inductor. When the switch is opened, the inductor’s coil current reverses direction and a voltage is induced which is proportional to the ratio of the inductor’s inductance and the time it takes for the switch to open and close. This induced voltage is the output voltage.

The ISH1212A-H family is ideal for a variety of applications including industrial, medical, and communications. It is suitable for applications requiring high conversion efficiency, low output ripple, and tight output voltage regulation. It is also suitable for applications requiring current limited outputs. The device is designed to operate in a broad range of temperatures, making it suitable for temperature-critical applications.

The ISH1212A-H converter is easy to install and allows for remote adjustment of the output voltage. It also features a low noise output and high voltage isolation, and is protected against thermal overloads and short circuits. With a wide input range and high efficiency, it is ideal for applications such as motor controllers, power supplies, and interconnection systems.

In summary, the ISH1212A-H DC-DC converter family is a versatile, reliable, and efficient choice for applications requiring variable output voltages. With its robust design and features, it is suitable for industrial, medical, and communication applications. Its buck topology allows it to achieve high efficiency and low output ripple. Its wide range of input and output voltages make it suited to a variety of applications.

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