78SR105SC

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DC-DC converters are devices used for converting from one DC voltage level to another. The 78SR105SC is a DC-DC converter, which has a distinct application field and a unique working principle.

Application Field

The 78SR105SC is specifically designed for applications requiring more than 16V of output voltage, and up to 150W of power. This DC-DC converter is also designed with improved power efficiency and its small size makes it ideal for applications in confined spaces. It is also suitable for use in various industrial, military or telometry applications.

Working Principle

The 78SR105SC works by first converting the input voltage, typically 12V DC, into an alternating current. This alternating current is then rectified, and two-stage switching of the voltage regulates the output voltage to the desired value. The first stage of switching involves the use of a pair of FETs, which switch off and on alternately and are connected in series with a transformer primary. The voltage is regulated and controlled by the duty-cycle of the two FETs. The output voltage is monitored by a voltage feedback system, which adjusts the duty-cycle of the FETs as necessary. The second stage of switching is then used to create a DC output that is stepped down to the output voltage required. This linear output voltage is then rectified and filtered to create a pulsating output voltage. This output voltage is then further regulated by a series of capacitors and control circuits. The 78SR105SC is designed to work with a minimum of heat generation and provide more than 85% power efficiency.

Conclusion

The 78SR105SC is a DC-DC converter designed for a specific application field - providing more than 16V of output voltage and up to 150W of power - and using a specific working principle. It works by first converting the input voltage to an alternating current, then rectifying and regulating the voltage in two steps. The output voltage is then rectified and filtered, and further regulated by capacitors and control circuits. The 78SR105SC has excellent power efficiency and is well suited for use in various military, telometry and industrial applications in confined spaces.

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