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NCP1308 from ON,ON Semiconductor

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NCP1308

Manufacturer: ON

Controller, Free Running Quasi-Resonant Current Mode

Partnumber Manufacturer Quantity Availability
NCP1308 ON 92 In Stock

Description and Introduction

Controller, Free Running Quasi-Resonant Current Mode # Introduction to the NCP1308 PWM Controller  

The NCP1308 is a high-performance pulse-width modulation (PWM) controller designed for offline power supply applications. This integrated circuit (IC) is optimized for flyback converters, offering precise control and enhanced efficiency in switch-mode power supplies (SMPS).  

Featuring a current-mode architecture, the NCP1308 ensures stable operation across varying load conditions while maintaining tight output regulation. It includes built-in protections such as over-voltage (OVP), over-current (OCP), and thermal shutdown, enhancing system reliability. The device operates in quasi-resonant (QR) mode at light loads, reducing switching losses and improving overall efficiency.  

With a fixed-frequency operation that transitions to frequency foldback under low-load conditions, the NCP1308 minimizes standby power consumption, making it suitable for energy-efficient designs. Its high-voltage startup circuit simplifies external circuitry, reducing component count and cost.  

The NCP1308 is commonly used in AC-DC adapters, LED drivers, and auxiliary power supplies. Its robust design and advanced features make it a preferred choice for engineers seeking a balance between performance and simplicity in power conversion applications.  

By integrating critical functions and protection mechanisms, the NCP1308 provides a reliable and efficient solution for modern power supply designs.

Application Scenarios & Design Considerations

Controller, Free Running Quasi-Resonant Current Mode

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