NCP1216AD100R2G

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Power management integrated circuits (PMICs) are used in a variety of applications to regulate power across a circuit board or system. One of these devices is the NCP1216AD100R2G, a low-cost, 120V AC/DC converter. It is a cost-effective, low-noise and high-efficient switcher for use in high-density, low-power applications.

AC DC Converters

The NCP1216AD100R2G operates as an AC/DC converter, converting 120V AC power into regulated DC voltage. To do this, the controller draws current from the input voltage, rectifying it and converting it to constant-current DC current. The current is then filtered, smoothed and regulated by the integrated power stage. It can deliver current of up to 100mA, making it suitable for medium-power applications. The device also features short-circuit and over-temperature protection, and can operate in temperatures ranging from -40°C to +125°C.

Offline Switchers

The NCP1216AD100R2G also operates as an offline switcher, driving an external medium-power field effect transistor (FET). This is used for converting a low-voltage input, such as a battery, into a higher voltage output. To do this, the controller compares the input voltage level with a reference voltage and drives the FET as required. The FET then switches the input current, delivering a higher voltage output. The device also features a built-in voltage reference, which simplifies the design of the external circuit.

Working Principle

The NCP1216AD100R2G has two modes of operation: boost mode and flyback mode. Boost mode is used when the input voltage is lower than the output voltage, and the device works by switching current in a sequence to charge the transformer core. In flyback mode, the input voltage is higher than the output, and the core is switched to supply energy to the load. When the voltage reaches its maximum, the device changes its operating mode and pulls the core\'s stored energy to supply the load.

Conclusion

The NCP1216AD100R2G is a low-cost and efficient solution for AC/DC and offline switcher applications. It is capable of delivering up to 100mA of current and is able to operate in temperatures ranging from -40°C to +125°C. The device is also equipped with short-circuit and over-temperature protection, making it a safe and reliable choice for designers.

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