NCP1239AD65R2G

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Power Management Integrated Circuits (PMICs) are a broad category of electronics components used to govern the flow of electricity in a device. The NCP1239AD65R2G is a recent PMIC designed by ON Semiconductor specifically to function as an AC/DC and offline switcher. This component is used in a wide range of applications, from industrial to consumer, and contains a variety of features that make it an ideal choice for power management applications.

Application Field

The NCP1239AD65R2G is primarily used in offline power supplies. It works with both AC and DC input voltages, and can take anywhere from 2.5V to 65V without requiring external components. This makes it useful for powering devices across multiple markets. For example, it can be used to power devices in the industrial, automotive, and consumer markets. Additionally, it can be integrated into products that require high reliability, such as digital signage displays, gaming systems, and medical devices.

The device supports a wide range of current ratings. It can deliver up to 1.5A of continuous output current, or up to 1.8A of peak output current. This makes it suitable for a range of load applications, such as microprocessors and memory chips, as well as larger, more power-intensive circuits. Furthermore, the NCP1239AD65R2G has low dropout voltage and provides low noise operation.

Working Principle

The NCP1239AD65R2G is based on a flyback topology. This means that it uses a magnetic field that is generated by a primary coil to store energy, which is then released through a secondary coil to drive an output voltage. The primary and secondary coils are referred to as "windings".

The device uses pulse-width-modulation (PWM) to control the output voltage. PWM is a control technique based on digital signals, where the duty cycle of a digital signal is adjusted in order to control the output voltage. The duty cycle is a measure of the amount of time that the primary winding is energized. The NCP1239AD65R2G can generate duty cycles up to 100%.

The device also contains a built-in over-voltage and under-voltage protection circuitry. This circuitry senses the output voltage and limits it to a predetermined range. If the output voltage goes outside of this range, the circuitry will shut down the device until the input voltage is within the safe operating range. This helps to ensure longer device life and stable operation.

Finally, the NCP1239AD65R2G contains a built-in thermal shutdown system. This system monitors the device temperature and shut downs the device if it goes outside of a predetermined range. This is important to ensure that the device operates within safe temperature limits.

Conclusion

The NCP1239AD65R2G is a power management IC that has a wide range of applications. It has the capability to work with both AC and DC input voltages, and can deliver up to 1.5A of continuous output current. Additionally, it has built-in protection circuitry to ensure safe operation and a thermal shutdown system to keep the device from overheating. As such, this device is an ideal choice for a range of applications.

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