ON Semiconductor NCP1246AD100R2G PWM Current-Mode Controller

The NCP1246AD100R2G is a high-performance fixed-frequency current-mode controller designed by ON Semiconductor for a wide range of power conversion applications. This integrated circuit (IC) is particularly well-suited for AC-DC adapters, off-line battery chargers, and a broad array of medium-power offline SMPS (Switched-Mode Power Supplies) that require precise and efficient control.

Key Features

• Current-Mode Control: The NCP1246AD100R2G utilizes current-mode control to provide excellent output voltage regulation and reduced component count in the power supply design.
• Frequency Foldback: To enhance efficiency at light loads, the IC incorporates frequency foldback, which also contributes to reduced electromagnetic interference (EMI).
• Adjustable Overcurrent Protection: The device offers an adjustable overcurrent protection feature, allowing designers to set the threshold to protect the power supply and the load from excessive currents.
• High-Voltage Startup: With an integrated high-voltage startup circuit, the IC ensures a rapid and reliable start-up directly from the high-voltage rail, minimizing standby power consumption.
• Auto-Recovery Fault Protection: The NCP1246AD100R2G is equipped with an auto-recovery fault protection mode that enhances system reliability by allowing the power supply to recover from fault conditions such as overvoltage, overload, and short circuit.
• Frequency Jittering: The built-in frequency jittering feature helps to further reduce EMI, facilitating compliance with regulatory standards.

Applications

• AC-DC Adapters
• Off-line Battery Chargers
• Medium-Power Offline SMPS
• Consumer Electronics Power Supplies
• Standby and Auxiliary Power Supplies

The NCP1246AD100R2G is part of ON Semiconductor's commitment to providing energy-efficient power management solutions. Its robust design and comprehensive features make it an ideal choice for engineers looking to optimize their power supply designs for performance, efficiency, and reliability. Packaged in a compact PDIP-7, the NCP1246AD100R2G offers a space-saving solution for modern electronic equipment.

With ON Semiconductor's expertise in power management and conversion, the NCP1246AD100R2G represents a reliable and versatile controller that meets the demands of a variety of power supply applications.