TOP249FN

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PMIC - AC DC Converters, Offline Switchers

TOP249FN is an integrated offline switcher from Power Integrations. It is designed to support a wide range of applications including those in industrial, home appliance, consumer, audio-video, lighting, computer, and automobile electronics. The device features a wide input voltage range, low EMI, extended safety margins, and high efficiency. This article will discuss the application field and working principle of TOP249FN.

Applications

TOP249FN is an offline switcher designed to support a wide range of applications such as stand-alone AC/DC power supplies, DC-DC converters, or as an offline switch-mode power supply for enhanced lowest-cost operation.

TOP249FN can be used for a wide variety of applications including those in industrial, home appliance, consumer, audio-video, lighting, computer, and automobile electronics. It can be used in motor and motor drive circuits, air conditioners, refrigerators, washers and dryers, microwaves ovens, and other home appliances. In consumer electronics, the device can be used in televisions, sound systems, and game consoles. In lighting, it can be used in LED lighting, street lighting, and commercial lighting. In computers, TOP249FN can be used to power mainboards, monitors, and power supplies. In automotive electronics, the device can be used in car navigation systems, in-dash stereo systems, and electronic engine control systems.

Functional Description

TOP249FN is a high-performance offline switcher for a wide range of applications. It is designed to meet the requirements of high volume AC-DC & DC-DC applications offering higher efficiency and lower standby power consumption. The device offers a wide range of design options and a high level of integration to help designers achieve cost and performance targets.

The device operates in the fixed frequency peak current mode, supplying a fixed duty cycle in the range of 30% - 60%. It supports a wide input voltage range of 90 to 265 Vac and is capable of providing up to 250W with high efficiency. It also features a low-emission design with low EMI filter components and optimized internal compensation. It also features an extended safety margin and a programmable off-time circuit for noise immunity. Furthermore, the device features a comprehensive set of protection features, including over temperature protection, over current protection, and over voltage protection.

Conclusion

TOP249FN from Power Integrations is a high-performance integrated offline switcher designed to meet the needs of a wide range of applications, including those in industrial, home appliance, consumer, audio-video, lighting, computer, and automotive electronics. The device features a wide input voltage range, low EMI, extended safety margins, and high efficiency. This article discussed the application field and working principle of the device.

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