FSFR1800US

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PMIC - AC DC Converters, Offline Switchers

FSFR1800US Application field and Working Principle

The FSFR1800US is a highly efficient AC-DC full bridge synchronous rectification offline switcher with low-cost applications, integration of most power components, and full bridge solution that provides superior efficiency and low system cost for consumer electronic and power switching application.

Advantages

The FSFR1800US provides several advantages when compared to competitive products, including high-performance low-cost operation, reduced parts count, superior efficiency, and minimal external heatsinking. Additionally, the FSFR1800US operates at a wide input voltage range (100 - 277V AC) allowing a high level of flexibility and ideal for worldwide CCTV and automotive applications.

The FSFR1800US also provides a small form factor with a package size of just 10mm x 8.6mm. This, combined with low-cost operation, minimal external components, and wide voltage range make it ideal for use in space-constrained applications.

Application Field

The FSFR1800US is an ideal Choice for AC-DC full bridge synchronous rectification application in consumer electronic and automotive industry.The applications include:

• Lighting applications like LED lighting, LED driver,HID driver
• Automotive application such as DC/DC converter, DC motor driver
• Consumer electronics, home appliances
• Industrial control applications

Working Principle

The FSFR1800US utilizes full-bridge synchronous rectification to improve both the efficiency and performance of the power conversion process. Essentially, when the FSFR1800US is activated, alternating-current (AC) electricity goes in on one side of the device, and direct-current (DC) electricity comes out the other. The FSFR1800US is a device optimized for STMicroelectronics’s process technology making it beneficial for lowering system cost because of its low BOM cost.

The operation of the FSFR1800US is relatively simple. The input audio AC current is first split and processed by the controller, which directs the current to the appropriate devices. The voltage and current information the controller receives allows it to switch the devices on and off according to the needs of the application, thus enabling full-bridge synchronous rectification to efficiently convert AC-DC.

Conclusion

The FSFR1800US is an ideal AC-DC offline switcher with a wide variety of applications. It offers higher efficiency and lower system cost with minimal external components. The small form factor allows it to be used in space-constrained applications, such as automotive and consumer electronic equipment. The FSFR1800US utilizes full-bridge synchronous rectification to effectively convert AC-DC.

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