NCP1077P130G

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PMIC (Power Management Integrated Circuit) technology has been widely used in modern electronic systems, providing efficient and precise control of power management by regulating the supply voltage and current. Among them, AC/DC converters, offline switchers, and the NCP1077P130G (also known as NCV1077) stand out as some of the most versatile and widely used power management systems. This article will discuss the application field and working principle of the NCV1077.

1. Application Field

The NCP1077P130G is an AC/DC switching regulator that is especially well-suited for use in embedded applications. Specifically, it is often used for switching motor loads and for providing regulated DC output power for low-voltage systems such as those used in computers and portable devices. The NCP1077P130G supports up to 90 VAC and 150 VAC input voltage ranges and provides up to 130 W output power. It also features an integrated PFC (Power Factor Correction) circuit and high efficiency operation, making it a capable and efficient solution for a variety of applications.

2. Working Principle

The NCP1077P130G operates by controlling the switching frequency and duty cycle of a power FET (Field-Effect Transistor) in order to regulate the DC output voltage. When the input AC voltage is applied, the power FET turns on, allowing the current to flow to the APFC (Active PFC) input and to the output DC load. The feedback pin of the NCP1077P130G senses the output voltage and adjusts the switching frequency and duty cycle of the power FET accordingly in order to control and stabilize the output voltage. At the same time, the PFC circuit also helps to maintain the input AC voltage, as well as providing a constant DC output power supply.

3. Protection Features

The NCP1077P130G also features comprehensive protection features, including input under-voltage protection, over-temperature protection, and circuit over-current protection. These safety features are designed to prevent damage to the regulator and the connected devices by temporarily disabling the switching FET when any one of these conditions is detected. Additionally, the NCP1077P130G has output voltage margining, allowing users to adjust the output voltage level within a certain range as required while protecting the components from over-voltage.

Conclusion

The NCP1077P130G is a versatile and reliable AC/DC switching regulator designed for use in embedded applications. It features a wide range of input AC voltage, high efficiency operation, and comprehensive protection features for added safety. Its PFC circuit allows for precise regulation of the DC output voltage and current, making the NCP1077P130G a solid choice for many applications.

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