NCP1365BABCYDR2G

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The NCP1365BABCYDR2G is an offline switcher power management integrated circuit (PMIC) designed for use in low power AC-DC converters. It contains all of the necessary components and functions to regulate the output voltage of a single-phase, low power AC-DC converter. It has a wide range of application fields and can be used in a variety of applications.

The NCP1365BABCYDR2G is a constant current/constant voltage (CC/CV) offline switcher that is capable of operating from 3.3V to 40V for output voltage regulation. It can deliver a maximum continuous output power of 2W with a peak efficiency of up to 86%. It features a high switching frequency of 100kHz and a low quiescent current of 20mA. It is designed to operate over an extended temperature range of -40°C to +85°C.

The main components of the NCP1365BABCYDR2G are a high voltage MOSFET switch, a low voltage auxiliary supply, a ripple filter capacitor and a boot diode. The beginning of the switching cycle is initiated when the MOSFET switch is turned on. This sets up a voltage divider between the input voltage and the output voltage of the converter. As the current passes through the switch, it will ramp up and down as the voltage divider ratio changes. This is how the NCP1365BABCYDR2G regulates the output voltage of the AC-DC converter.

After the initial starting of the switching cycle, the low voltage auxiliary supply will remain on and the output voltage is monitored by an internal voltage reference. If the output voltage deviates from its preset value, the auxiliary supply will turn on and off in order to maintain the desired output voltage. The frequency at which the auxiliary supply switches on and off is dependent on the inductance of the output inductor, the resistive load and the output voltage.

The NCP1365BABCYDR2G also includes a ripple filter capacitor that is used to reduce the amount of high-frequency noise seen at the output of the AC-DC converter. The capacitor is used to remove the higher-frequency components of the output voltage ripple and also helps to improve the transient response of the converter. The ripple filter capacitor is typically made up of a combination of ceramic and electrolytic capacitors.

The NCP1365BABCYDR2G also includes a boot diode, which is used to provide a low resistance path to ground and reduce power losses during startup. During the startup phase of the converter, the diode will be in a reverse-biased state and will prevent any reverse current from flowing through the switch. This allows the converter to start up more quickly and improves its overall efficiency.

The NCP1365BABCYDR2G is a robust, cost-effective solution for single-phase, low power AC-DC converters. Its wide range of application fields, high efficiency and low power losses make it suitable for a variety of applications. It is normally used in applications such as LED drivers, portable electronics, battery-powered devices, lighting, and industrial controllers.

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