NCP1399APDR2G

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The NCP1399APDR2G is an offline switcher power management integrated circuit (PMIC) that is used as an AC-DC converter. It is optimised for off-line switch mode power supplies (SMPS) or power converters that are used to efficiently transform an input voltage from AC line voltage to a regulated DC voltage. This PMIC is designed for use in various applications such as solid-state lighting, industrial/automotive/consumer electronics and low-power LED drivers.

The NCP1399APDR2G consists of three main blocks, namely a power supply, current-mode control and a protection circuit. These three blocks provide an integrated system solution for AC-DC converters that can be used with a wide variety of off-line applications.

The NCP1399APDR2G integrates a full bridge PFC controller, a zero current and zero voltage switching (ZCS/ZVS) current-mode PWM controller, and an undervoltage protection (UVP) circuit in one package. With the integrated control block and the integration of an internal power switch, system designers can achieve a high degree of efficiency and improved system performance.

The PFC controller is a low-cost, high-efficiency boost-topology circuit which utilizes a resonant active clamp and a leading-edge modulation scheme with adjustable peak current mode control. This provides stable power factor correction with minimal EMI noise and improved system efficiency.

The ZCS/ZVS current mode PWM controller is designed for use in off-line applications. It features a multifunctional protection and fault indicator, pulse-by-pulse current limiting, and a low-noise oscillator. It also offers adjustable valley current control, which enables the designer to control the output peak currents in a regulated or switched-mode power supply according to their application needs.

The integrated UVP circuit provides overvoltage protection (OVP) and undervoltage protection (UVP) that can be configured to fit different application needs. The OVP threshold can be set to prevent the output voltage from exceeding the desired level.

The NCP1399APDR2G SMPS is a cost-effective solution for a vast range of off-line applications and offers flexibility, high performance and low-noise operation. By employing this PMIC, designers can easily achieve their design goals and reduce time-to-market of their products.

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