NCP1200D40R2G

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NCP1200D40R2G Application Field and Working Principle

NCP1200D40R2G is a type of AC/DC switcher. This device is applicable in various fields or industries such as desktop/laptop, TV/audio/video, automotive, communication, industrial control, etc. This device basically operates as an economical and wide range AC/DC switcher solution of 2:1 with full protection.

The working principle is a little bit more complicated. The device basically works as a two-stage converter, first performing AC/DC conversion and secondly performing a DC/DC conversion. The NCP1200D40R2G internally consists of an AC/DC stage module and the second stage module connected together. The AC/DC stage provides galvanic insulation and active PFC that allows the device to have a wide range AC input to achieve harmonic regulation, efficiency and cost savings. The second stage is a DC/DC converter that provides a high efficiency output with regulation and protection.

AC/DC Stage

In this stage, the supplied AC voltage is stepped down by transformer, rectified and filtered for providing DC voltage to the controller integrated circuit. The pulse width modulation (PWM) control of the output voltage is provided by the controller IC. The active PFC allows for a wider input range and reduces harmonics in the output.

DC/DC Stage

This stage provides a regulated filtered output voltage form the input voltage with the help of a power FET. All the functions are also provided by the controller IC with the help of a power FET.

The NCP1200D40R2G also provides all the protections and control functions necessary to make the device safe, reliable, easy to use and both industry standard EMI compliant. These protections are: short circuit, overload, overvoltage, over-temperature and brown-out protection.

The NCP1200D40R2G is an efficient and flexible device that makes ideal for a wide range of applications demanding for a reliable, cost efficient and high quality switcher, suitable for both consumer and industrial applications.

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