NCP1653ADR2G Integrated Circuits (ICs)

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Power systems today must work with higher efficiencies, reduced noise and better harmonic performance. This can be achieved through power factor correction (PFC) solutions such as the NCP1653ADR2G. The NCP1653ADR2G is a current mode PFC controller for single stage boost applications. It is designed for high performance active power factor correction at high line input voltage ac to dc converters. The device offers a cost-effective and easy design solution for off-line power factor correction applications.

Applications of NCP1653ADR2G

The NCP1653ADR2G was designed with a wide variety of applications in mind. It is suitable for use in a variety of residential, commercial and industrial applications that require PFC control solutions. A few typical applications include:

• Uninterruptible Power Supplies (UPSs)
• Digital TVs
• Computer Monitors
• LED lighting
• Power Supplies
• Power adapters

The NCP1653ADR2G also provides a variety of features for using in different power solutions. These features include:

• Integrated high performance PFC control
• High efficiency up to 99.2%
• Excellent performance at low input line and light load
• Cycle-by-cycle current sense
• High voltage start-up with Power Good output
• Frequency jittering for mountain-shaped current waveform
• Under-voltage lockout (UVLO) to protect the system
• Low stand-by power consumption
• High capability of integrated output power

Working Principle of NCP1653ADR2G

The NCP1653ADR2G provides a high performance active PFC solution for single-stage boost applications. It features a low standby power consumption, low external component count, high peak efficiency and low harmonic distortion. The device operates in a fixed frequency bipolar discontinuous conduction mode (BDM), ensuring excellent performance with low input line, light load and wide input voltage range. The device utilizes frequency jittering to provide a more realistic input current waveform when the input voltage is out of range.

The integrated power factor correction makes the device well suited for applications requiring high power quality such as applications with high line input voltage ac to dc converters. The device includes integrated internal power loss sensing, power good output and can be used in high voltage start up applications. The low power consumption of the NCP1653ADR2G is further enhanced by its low standby power.

Conclusion

The NCP1653ADR2G current mode PFC controller is an ideal solution for a variety of applications requiring power factor correction. It is designed for high performance, high efficient power factor correction, high peak efficiency and low harmonic distortion at high line input voltage ac to dc converters. The device provides integrated features such as high voltage start up, power loss sensing, and power good output, among others. With its integrated power factor correcting topologies, the NCP1653ADR2G is a cost-effective PFC solution for off-line power factor correction applications.

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