ON Semiconductor NCP1377BDR2G PWM Current-Mode Controller

The NCP1377BDR2G from ON Semiconductor is a highly integrated PWM current-mode controller designed for high-performance power supply systems. This device is particularly suitable for AC-DC adapters, offline battery chargers, and auxiliary power supplies. It combines a wealth of features to enhance system efficiency, reliability, and simplify the design process.

Key Features

• Current-Mode Control: This technique provides inherent line voltage feed-forward compensation for improved noise immunity and reduced output voltage ripple.
• Adjustable Switching Frequency: The NCP1377BDR2G offers a frequency range from 60 kHz to a maximum of 130 kHz, allowing designers to optimize their designs for efficiency or size.
• Dynamic Self-Supply: The device eliminates the need for an auxiliary winding or external bias supply, reducing BOM cost and complexity.
• Auto-Recovery Overvoltage Protection: Protects the power supply and load in the event of an open-loop or an overvoltage condition on the output.
• Soft-Skipping Mode: Reduces the switching frequency under light-load conditions, thereby improving efficiency and reducing standby power consumption.
• Built-In Frequency Jittering: Spreads the EMI noise spectrum, simplifying the task of meeting EMI regulations.
• Short-Circuit Protection: Enhances system safety and reliability by shutting down the output in the event of a short-circuit condition.
• Thermal Shutdown: Provides additional protection by turning off the device if the internal temperature exceeds a safe threshold.

Applications

The NCP1377BDR2G is versatile and can be used in a variety of applications, including:

• AC-DC Adapters for Laptops, Printers, and Other Portable Devices
• Offline Battery Chargers
• Standby and Auxiliary Power Supplies
• Power Supplies for TVs, Monitors, and Audio/Video Equipment

In summary, the NCP1377BDR2G PWM current-mode controller from ON Semiconductor offers a robust solution for designers looking to create efficient and reliable power supply systems. Its comprehensive feature set and flexibility make it an excellent choice for a wide range of applications.