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NCP717BMX330TCG application field and working principle

The NCP717BMX330TCG is an advanced linear Voltage Regulator manufactured by ON Semiconductor. It is a high-efficiency, smart step-down converter featuring integrated high-side and low-side MOSFETs.

Features and Benefits

The NCP717BMX330TCG is a white label version of the well-known NCP717X range of voltage regulators, this offering benefits from a custom thermal design and optimized power delivery. The NCP717BMX330TCG is a two-phase, synchronous buck regulator. This topology comprises two separate phases, each driven by its own dedicated controller. Each phase can be driven in either constant frequency mode or pulse frequency mode. In constant frequency mode, a constant average output current is delivered to the load, thereby minimizing output ripple. In pulse frequency mode, a wide variety of duty cycles can be used to deliver power to a wide range of loads.

Key Specifications

• Input Voltage: 5.5V to 32V
• Output Voltage: 0.8V to 7V
• Simultaneous Buck and Boost: 0.8V – 32V
• Output Current: Up to 3A/phase
• Efficiency: Up to 96.5%
• Package: 24-pin (3mm x 3.5mm) SOIC

Applications

The NCP717BMX330TCG is an advanced linear voltage regulator ideal for a variety of applications. It can be used to regulate power supplies in a wide range of products, such as wired and wireless communication systems, server/storage applications, embedded and digital audio systems, automotive infotainment systems, portable power and charging systems.

Working Principle

The NCP717BMX330TCG utilizes a two-phase, synchronous buck regulator topology to provide a high level of efficiency, accuracy, and regulation. The input voltage is applied to the input pins of the device, which supplies power to the two independent, synchronous MOSFETs. Each pair of MOSFETs is driven by its own high-side and low-side gate driver, which regulates the output voltage from the load. The regulator can be programmed to be either in constant frequency mode or pulse frequency mode, allowing designers to optimize power delivery for different types of loads, such as small and large motors.

In constant frequency mode, an average output current is maintained by the two independent controllers. The controllers adjust the duty cycle of their respective MOSFETs to match the output current. In pulse frequency mode, a range of different duty cycles are available, allowing designers to choose the most efficient solution for their design. The NCP717BMX330TCG also features adjustable soft-start, undervoltage lockout, and overvoltage protection to ensure a safe and reliable output to the load.

Conclusion

The NCP717BMX330TCG is an advanced, high-efficiency linear voltage regulator produced by ON Semiconductor. It is designed to provide a fast and reliable means of power regulation in a wide range of applications. Its two-phase, synchronous buck regulator topology delivers high-efficiency, optimized power delivery, and can be programmed to operate in either constant frequency or pulse frequency mode. With its integrated protection features and custom thermal design, the NCP717BMX330TCG is an ideal solution for designers seeking a robust linear voltage regulator.

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