PSS129-7

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DC-DC converters are devices that convert an input voltage into an output voltage. They are used for electrical and electronic power conversion in various fields, such as automotive, communications, industrial, medical and military applications. The PSS129-7 converter is a member of the family of Single-Output Low Power DC-DC converters. It is designed to convert an input voltage of 9-18V DC into a regulated 5V DC output at up to 6W of power and offers a very high efficiency of up to 85%.

The PSS129-7 converter features an isolated, fixed frequency two-switch forward converter topology, combined with a synchronous rectifier. By using this topology, the PSS129-7 achieves a very low ripple and low noise output voltage, while optimizing efficiency and minimizing size. The PSS129-7 is housed in a plastic SIP (Single-In-Package) package, making it ideal for applications where space is at a premium such as mobile phones.

The PSS129-7 converter is ideal for many applications, such as automotive, industrial, LED lighting and consumer electronics. It is suitable for battery-powered applications, where the input voltage could change between 9V and 18V; as well as applications where a 5V voltage output is needed. This device is also suitable for applications with low current requirements, where an efficient and low ripple output is desired.

Working Principle of the PSS129-7 Converter: The PSS129-7 converter uses a two-switch forward converter topology. The primary side consists of an input rectifier, an energy storage inductor, two switches and a power transformer. An isolated power transformer is used to isolate the primary and secondary circuits. The two switches are operated in a synchronized manner to convert the input voltage to a regulated output voltage.

The secondary side consists of a synchronous rectifier, an output filter capacitor, and an output voltage feedback circuit. The output voltage is determined by the duty cycle of the two switches on the primary side. An internal regulator continuously monitors the output voltage and adjusts the duty cycle of the two switches accordingly. This ensures that the output voltage remains regulated regardless of changes in the input voltage or load current.

The PSS129-7 converter also features integrated protection features, such as over-voltage protection, over-current protection, over-temperature protection and short-circuit protection. These protection features ensure that the PSS129-7 converter operates safely and reliably under all conditions.

In conclusion, the PSS129-7 converter provides an excellent solution for applications where a regulated and low ripple output voltage is needed. It can provide up to 6W of power and features a very high efficiency of up to 85%. Its small size and integrated protection features make it ideal for applications where space is at a premium.

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