NCP1239ED100R2G

PMIC (Power Management Integrated Circuit) and AC/DC Converters, Offline Switchers are widely used in a range of applications and products, including desktop computers, remote controls, medical equipment and automotive systems. The NCP1239ED100R2G is one such PMIC and AC/DC Converter, Offline Switcher, offering non-isolated buck converter functionality and a variety of features that enable the design of efficient, cost-effective power systems.

Application Field of NCP1239ED100R2G

The NCP1239ED100R2G is optimized for power system applications where high reliability, small size and low order component count are necessary for low cost production. They are suitable for a wide range of applications, including desktop power supplies, AC/DC adapters, distributed power systems, portable devices, battery powered applications and embedded controllers. The NCP1239ED100R2G offers multiple protection features, hysteretic switching, excellent ripple rejection, single-shot current limit, soft start and over-voltage protection.

The device is also suitable for LED lighting and drivers, where high efficiency and small EMI footprint are desired. It supports single ended current sense and allows for maximum efficiency as well as precise current control, which makes it an ideal choice for LED lighting and drivers. As it is an integrated solution with a built-in Power MOSFET and an adjustable current limit, the NCP1239ED100R2G is ideal for applications requiring low design cost and reliable operation.

Working Principle of NCP1239ED100R2G

The NCP1239ED100R2G is a non-isolated buck converter that offers high efficiency and precise current control. It includes a fully integrated power MOSFET, adjustable current limit and various protection features such as input undervoltage locking and overvoltage protection. It also offers hysteretic switching to reduce ripple, single-shot current limit, soft start and other features.

The NCP1239ED100R2G works by taking in a DC input voltage, which is typically 12V, and converting it to a lower output voltage. The output voltage is adjustable and can be set between 0.6V and 28V. The output voltage is regulated by the internal switching regulator, which is driven by an internal oscillator. The external components consist of an inductor, input and output capacitors, and a single resistor that sets the operating frequency. The operating frequency can be adjusted from 150kHz to 500kHz to optimize efficiency.

The device also offers various protection features. It includes a hysteretic switch, which ensures fast and accurate response to input voltage disturbances, providing a safe and reliable regulation. It also provides input undervoltage locking and overvoltage protection to prevent damage to the load and powering device. The current limit feature allows users to set a maximum current load to prevent overloading of the supplying device, while the soft start feature provides a gradual current output increase to reduce inrush current.

In summary, the NCP1239ED100R2G is a non-isolated buck converter that offers high efficiency and reliable operation, making it an ideal choice for applications such as desktop power supplies, AC/DC adapters, distributed power systems and battery powered devices. It is a cost-effective, low order component count integrated solution with a variety of features that enable the design of efficient power systems.