70IMX4-15-8

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DC-DC Converters are devices that convert direct current from one voltage level to another. They can be used to step-down a higher voltage into a lower voltage, or to step-up a lower voltage into a higher one. The 70IMX4-15-8 is a DC-DC converter, designed to convert input voltage from 16V through to 33V (18 to 32V also possible) to an adjustable, regulated output voltage of 0.8V to 14V.

This type of DC-DC converter is an ideal choice for applications such as automotive charging systems, where higher input current may be seen at start-up, and the module is capable of handling in-rush currents of up to 400A for a duration of more than 10ms.

The range of applications for the 70IMX4-15-8 is wide. It can be used for driving multiple voltage rails in robotic servo-systems, for powering various types of communications, navigation and control hardware found in aerospace and shipboard applications, for replacing existing linear systems in USB charging systems, and even for powering high-performance digital signal processing systems.

The 70IMX4-15-8 is designed to work in an ambient environment of –40C to +125C, with an excellent temperature coefficient. The module is equipped with an integrated overload/short circuit protection circuit.

The basic operating principle of a DC-DC converter is relatively straightforward. A conversion process takes place, where energy from the input voltage is converted to an equivalent amount of energy at the output voltage. The main difference is that the two voltages—input and output—are no longer at the same level, as opposed to linear voltage regulation where the input and output are equal.

There are various topologies for DC-DC converters ranging from simple switching linear control and flyback designs to sophisticated digitally-controlled systems. The 70IMX4-15-8 uses a digital on-off control method, which is developed to keep the efficiency of the product at its optimum level while keeping the cost of the product low. The key benefits of this type of control are the reduced part count, lower cost components, and tight regulation of output voltage.

Internally, the 70IMX4-15-8 utilizes a buck-boost configuration. This means that when the input voltage rises above the regulated output voltage, the converter will operate as a buck converter, stepping down the voltage. Conversely, when the input voltage drops below the regulated output voltage, the converter will operate as a boost converter to step up the voltage. This allows the converter to maintain a regulated output voltage, despite wide input ranges.

The 70IMX4-15-8 features constant frequency operation, using synchronous Pulse Width Modulation (PWM). The converter also features remote controlON/OFF control, adjustable output voltage trimming and over-voltage protection. The module is further equipped with a soft-start or remote-start feature. This feature establishes the output voltage with minimum inrush current.

The 70IMX4-15-8 is a reliable and competitive DC-DC converter, which is well-suited for numerous types of applications across a wide range of voltage levels. The module offers a wide input range, high efficiency, and tight output voltage control with a cost-effective design.

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