XR79203EL-F Power Supplies - Board Mount

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DC-DC converters are special power electronic circuits used to efficiently convert electrical power from one voltage level to another. The XR79203EL-F is a non-isolated, synchronous, buck-boost DC-DC converter. It is an integrated circuit that performs buck-boost operations with higher efficiency compared to other similar designs. It has a number of features such as wide input voltage range, low output voltage accuracy, programmable soft-start time, external frequency synchronization, over/under voltage protections, and over current protection.

The XR79203EL-F application field covers industrial automation, consumer electronics, communication or solar energy applications that has limited space. The design of the XR79203EL-F provides the possibility to build a very compact DC-DC converter with variable output voltage. The XR79203EL-F is an ideal choice when applications require tight output voltage accuracy and fast transient performance.

The working principle of the XR79203EL-F is fairly straightforward and consists of two power MOFSETs acting as switches, which are placed on a synchronous buck-boost converter circuit. The XR79203EL-F converter utilizes Pulse Width Modulation (PWM) to regulate the power output of the circuit at the desired voltage level. The two switches are operated in an alternating manner, where one is a buck switch while the other is a boost switch. The speed of the switching toggles between the two switches is controlled by the control logic built into the IC, which adjusts the power output of the device according to the desired voltage output.

The XR79203EL-F features an adjustable frequency of up to 1.2MHz, which allows for fast switching of the power MOSFETs. This provides for faster voltage regulation, resulting in greater output voltage regulation accuracy and quicker transient response to load steps. The circuit also has a configurable soft-start that allows for slow ramping of the output voltage as opposed to a sudden jump in output voltage at start up. The XR79203EL-F also has over voltage and under voltage protections for added safety.

In conclusion, the XR79203EL-F DC-DC converter is an ideal choice for applications that require a small, efficient, and high-performance DC-DC converter with thermal and current limiting protection. The converter is capable of outputting currents of up to 28A, with an adjustable switching frequency up to 1.2MHz, providing fast dynamic response to load transients. It also features several other features such as soft-start, adjustable output voltage, protection for over/under voltage and over current protection, making it suitable for use in a variety of industrial and consumer applications.

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