IW4803SA

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DC DC converters are used to convert DC power from one voltage level to another. The IW4803SA is a buck-boost converter with a wide range of operating parameters that makes it suitable for multiple applications. This article will provide an overview of the IW4803SA\'s application field and working principle.

Application Field of IW4803SA

The IW4803SA is a DC-DC converter designed to provide up to 3A of continuous output current to up to 40V input voltage. It works efficiently under a wide input voltage range, from 2.5V to 40V and is suitable for a variety of applications. Furthermore, it is capable of driving multiple loads with output cross-regulation below 10%. The IW4803SA also offers very low shutdown current and is protected from over-temperature, over-voltage and over-current.

Some of the applications of IW4803SA include automotive (e.g. vehicle electronics and power systems, battery charger circuit, power management); industrial (e.g. process control, motor drives, UPS systems); telecom (e.g. power management for servers and communication systems); and consumer and computer (e.g. consumer electronics and peripherals, extra power supply for graphic cards and motherboards).

Working Principle of IW4803SA

The IW4803SA is a buck-boost DC-DC converter. It works by stepping down higher input voltage in order to provide a constant output voltage independent from the input voltage level. To achieve this, the IW4803SA utilizes a combination of two switching steps. First, when the input voltage is higher than the output voltage, a buck converter steps down the input voltage with a voltage divider circuit and then it is regulated to the desired output voltage. On the other hand, when the input voltage is lower than the output voltage, the IW4803SA steps up the voltage with an inductor-capacitor circuit and then it is again regulated to the desired output voltage.

The IW4803SA also features over-voltage, over-temperature and over-current protection circuits. The over-voltage protection circuit makes sure that the module does not output Voltages higher than the rated maximum; while the over-temperature protection stops the module from operating if the die-temperature exceeds certain level. The over-current protection helps protect the module from electrical overloads.

In conclusion, the IW4803SA is a reliable and efficient buck-boost DC-DC converter with wide input voltage range and suitable for multiple applications. It is capable of providing up to 3A of continuous output current and is protected from over-voltage, over-temperature and over-current.

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