NCP1622DCCSNT1G Integrated Circuits (ICs)

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NCP1622DCCSNT1G is a power factor correction (PFC) controller with features to optimize power factor correction, harmonic reduction, and ease of implementation. The device operates in critical conduction mode (CCM) and includes all the features needed to design a high performance single stage power factor correction buck PFC converter. The combination of the integrated power sense amplifier, efficient PWM control and auto-demagnetization makes the device ideal for a wide range of power conversion applications.

NCP1622DCCSNT1G can be used in a variety of applications such as LED lighting, AC-DC converters, battery-powered products, or computer power supplies. The device supports a wide input voltage range, 6V to 100V, and is suitable for flyback, buck, and boost PFC converters. The device includes a unique Auto-Demagnetization feature, which can reduce peak inductor current ripple, reduce power losses, and improve total system efficiency.

The Auto-Demagnetization feature can also reduce harmonics and EMI, as well as improve power factor accuracy. Voltage mode and current mode PFC controllers have been used for controlling the output voltage and current of the converter in order to meet power factor correction requirements. The device\'s built-in digital control block implements this and other functions such as soft start, current limit, overvoltage protection, and overcurrent protection.

A power sense amplifier is integrated into the NCP1622DCCSNT1G device for accurate and fast power factor correction. The device incorporates a highly efficient synchronous rectifier to improve system performance and to eliminate the need for an external synchronous rectifier. The PFC controller also supports flexible current-mode control, providing the Designer with more margin for accuracy and allowing for easier design due to its adjustable control gain.

In addition, the NCP1622DCCSNT1G includes a comprehensive set of safety features such as undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and over temperature protection (OTP). The OCP can be easily set to protect the system against under- or over-loaded operation.

In summary, the NCP1622DCCSNT1G offers a high performance, integrated, and cost-effective solution for Power Factor Correction PFC applications. Its combination of power sense amplifier, efficient PWM control and auto-demagnetization make it ideal for a wide range of power conversion solutions. The combination of robust design and safety features make the device the perfect choice for the most demanding power applications.

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