SFS20481R5B

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The SFS20481R5B is a DC DC converter, specifically designed with high reliability and flexibility for use in both telecom and datacom point of load (POL) applications. It has a wide input voltage range, minimal standby power, multiple protection features and is available in high current packages with full digital control (via I2C digital control).

SFS20481R5B Application Field and Working Principle

The SFS20481R5B is designed for use in telecom and datacom power systems. The introduction of new standards together with higher bandwidth requirements have pushed for better power efficiency, higher integration and scalability. The SFS20481R5B DC-DC converter is designed to meet these challenges and offers:

• Wide input voltage range (4.5 V to 14 V)
• High efficiency (up to 94%)
• Low standby power (less than 2 mW)
• High current packaged solutions (up to 13 A)
• Compact size and light weight
• Various protections and digital control

The SFS20481R5B DC-DC converter operates in voltage mode control, which means that the output voltage is regulated by controlling the main switch current. It uses a fixed frequency PWM control with adjustable current limit, which is set via the external resistor.

The SFS20481R5B has two separate inputs, VIN and VSEN. VIN is the main input of the converter and it accepts a wide input voltage range (4.5 V to 14 V). VSEN is the sense input, which can be used to bias an external sense resistor connected between the VSEN signal and the converter ground. By connecting a resistor to VSEN, it is possible to obtain tighter voltage regulation. The output voltage is adjusted by controlling the comparator that compares the reference voltage and the feedback voltage, generated from the output voltage.

The SFS20481R5B also features an I2C digital control interface, which can be used to adjust the current limit and the output voltage, enabling optimized performance for a variety of applications. It can also provide system monitoring by providing real-time status information. The SFS20481R5B has additional features such as under-voltage lockout (UVLO) and over-current protection (OCP) to ensure system reliability.

In conclusion, the SFS20481R5B is an efficient, high performance and reliable DC-DC converter designed for telecom and datacom load point applications. It has a wide input voltage range, minimal standby power, multiple protection features and digital control. Its high efficiency and compact size make it ideal for a variety of applications.

The specific data is subject to PDF, and the above content is for reference