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NCP1207B from ON,ON Semiconductor

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NCP1207B

Manufacturer: ON

PWM Controller, Free Running Quasi-Resonant Current Mode

Partnumber Manufacturer Quantity Availability
NCP1207B ON 10 In Stock

Description and Introduction

PWM Controller, Free Running Quasi-Resonant Current Mode The NCP1207B is a high-performance pulse-width modulation (PWM) current-mode controller designed for offline power supply applications. This integrated circuit (IC) is widely used in switch-mode power supplies (SMPS), offering robust performance, efficiency, and reliability in various electronic systems.  

Featuring a fixed-frequency operation, the NCP1207B ensures stable switching performance while minimizing electromagnetic interference (EMI). Its current-mode control architecture provides excellent line and load regulation, making it suitable for AC-DC converters, adapters, and auxiliary power supplies. The device includes built-in protections such as overvoltage, overload, and short-circuit safeguards, enhancing system durability.  

One of its key advantages is its ability to operate in a quasi-resonant mode at light loads, improving efficiency and reducing power dissipation. The NCP1207B also incorporates a skip-cycle feature, further optimizing energy consumption during low-demand conditions. With a startup current as low as 100 µA, it ensures minimal power loss during standby mode.  

Engineers favor the NCP1207B for its compact design, ease of implementation, and consistent performance across a wide input voltage range. Its versatility and reliability make it a preferred choice for modern power supply designs requiring high efficiency and robust protection mechanisms.

Application Scenarios & Design Considerations

PWM Controller, Free Running Quasi-Resonant Current Mode

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