NCP1601BDR2G

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Power factor correction (PFC) is a power management technique that is implemented by using a switch-mode power control device. Many products use NCP1601BDR2G, a highly efficient power factor correction device, to achieve modern switching technology with cost effective solutions for improved power efficiency. The device also helps reduce costs by providing improved standby power performance and high-efficiency designs with fewer external parts.

Application Field

The NCP1601BDR2G is used in a wide range of applications that require to maintain a type of constant power supply, such as boost converters, buck-boost converters, and SEPIC (Single-ended Primary Inductor Converter). Its small size feature makes it suitable for space-limited applications, such as desktop computers, notebook computers and LCD televisions. Some of its other applications are:

• LED lighting systems
• Solar and wind energy systems
• SMPS (Switched Mode Power Supply)
• Industrial systems
• Communication systems
• HEV and EV power inverters
• Power inverters for DC/AC

Working Principle

The NCP1601BDR2G works by utilizing a full bridge rectifier, with an internal bidirectional high-side and low-side MOSFET switch. The PFC controller regulates an internal MOSFET gate driver, thereby minimizing the losses during operation. The device is designed to operate in both CCM (Continuous Conduction Mode) and DCM (Discontinuous Conduction Mode) with a high level of accuracy. To ensure safety and reliability, the NCP1601BDR2G implements overvoltage, overcurrent, and over temperature protection.

The peak current mode technique employed in the device reduces the power loss that occurs during the on and off times of cycle. A high accuracy voltage detector monitors the voltage feedback that is used to compensate for line and load variations. Additionally, a current sense resistor is also used to facilitate the continuous current sensing operation.

The internal hysteretic controller maintains a constant amplitude of the boosted output voltage, regardless of the load or line conditions. The high performance features of the NCP1601BDR2G make it highly desirable for power factor correction applications which require an excellent efficiency. The device is available in a small 3-pin SOT-23 package, making it highly suitable for space-limited applications.

Conclusion

NCP1601BDR2G is a high performance power factor correction device that is widely used in many applications to maintain a stable and efficient power supply. The device implements a full bridge rectifier, with an internal bidirectional high-side and low-side MOSFET switch. The PFC controller works by regulating the internal gate driver, hence ensuring minimal power losses. The device also comes with many safety considerations such as overvoltage, overcurrent and over temperature protection. The NCP1601BDR2G is available in a small 3-pin SOT-23 package, making it suitable for many space-limited applications.

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