NCP1200AD60R2G

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PMIC (Power Management Integrated Circuits) is a family of integrated circuits that are used to manage the power usage and delivery needs of electronics systems. AC DC converters, off-line switchers, and NCP1200AD60R2G are all varieties within the PMIC family. This article will provide a brief overview of the application field and working principle of NCP1200AD60R2G.

NCP1200AD60R2G is an AC/DC offline switcher designed for off-line economical applications. It is a non-isolated flyback converter that operates in continuous conduction mode (CCM) and typically is used for LED lighting and digital TV applications, as well as other applications that are suitable for cost-effective non-isolated designs. The NCP1200AD60R2G can operate from an input voltage range of 85-265V AC, and is also much more efficient than traditional transformer-based offline solutions. It has optimized turn-on and turn-off characteristics, reducing requirements for output capacitor and post-magnetization energy, making it ideal for eliminating power supply noise and reducing energy consumption.

The working principle of the NCP1200AD60R2G is that it takes the input AC voltage, rectifies it, and stores the energy in the transformer during one half-cycle, which then is inverted and regulated in a quasi-resonant flyback converter to create a DC output voltage. The control scheme consists of a primary-side controller along with a secondary-side feedback loop implemented with a resistor network and an optocoupler for output voltage regulation. This topology has one distinct advantage over other switch mode power supplies, which is that it does not require an additional isolated output voltage divider circuit.

The NCP1200AD60R2G has several benefits that make it ideal for applications such as LED lighting, digital TVs, and many other consumer products. It can operate safely in conditions of up to 85-265V AC mains input. It also offers flexibility in regards to external components and can be optimized for specific applications. This topology also offers the ability to protect against various faults such as short-circuit, overvoltage, under-voltage, over-temperature, and overload, making it very reliable. Finally, it offers very high efficiency, as well as low EMI/EMC requirements.

In summary, NCP1200AD60R2G is an AC/DC offline switcher that is suitable for economical applications such as LED lighting and digital TV. It operates by rectifying the input AC voltage, storing it in the transformer during one half-cycle, and employing a quasi-resonant flyback converter to create the desired DC output voltage. Its primary benefit is its ability to eliminate the need for an additional isolated output voltage divider circuit. Its other benefits include its operation with 85-265V AC mains input, its flexibility for external components to be optimized for specific applications, its ability to protect against various faults including short-circuit, overvoltage, etc., and its high efficiency and low EMI/EMC requirements.

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