PT78ST109T

DC-DC converters are among the most common switching power supplies used for a variety of applications, such as computers, telecommunications, industrial, automotive and military. The PT78ST109T DC-DC converter is a component of a switch-mode power supply with AEC-Q qualified components, designed for use in industrial, automotive and telecommunication applications. The PT78ST109T is a single-output non-isolated DC-DC converter with a wide input voltage range of 16 to 36 volts and takes up to 5A load. It is available in DIP-7, DSO-14 and SOP-16 packages.

Working Principle of the PT78ST109T

The PT78ST109T DC-DC converter works by taking an input AC voltage, rectifying it to provide a DC voltage, and then regulating the output DC voltage level to match the desired level. The device uses a control IC to provide the necessary input and output voltage regulation. The IC provides the necessary control signals for the switching MOSFETs in the device. When the proper DC voltage level is obtained, the control IC will shut off the MOSFET, preventing the voltage from dropping below the set level.

PT78ST109T Application Field

The PT78ST109T is designed to be used in industrial, automotive and telecommunications applications as well as other general-purpose power supplies where reliable, low cost and low noise performance is essential. It is often used in switching power supplies, point-of-load converters and distributed power supplies. It can also be used in distributed power architectures in distributed power networks to provide a single regulated output voltage from a wide variety of input voltage sources.

Applications include fixed application such as automotive and industrial applications, where the device is expected to operate reliably under extreme temperatures, shock and vibration. The device is AEC-Q qualified and is suitable for automotive and other quality-controlled environments.

The device can also be used in telecommunication applications such as Base Stations, where it can provide reliable, low cost and low noise performance.

Conclusion

The PT78ST109T is a single-output non-isolated DC-DC converter designed for use in industrial, automotive and telecommunication applications requiring reliable, low cost and low noise performance. With an input voltage range of 16 to 36 volts and 5A capacity, the device is ideal for distributed power architectures, automotive and other quality-controlled environments. The device is AEC-Q qualified and can provide reliable, low cost and low noise performance under extreme temperatures, shock and vibration.