The NCP1203D60R2 is an integrated circuit (IC) component manufactured by ON Semiconductor. It is specifically designed as a highly efficient primary-side controller for applications in AC-DC offline converters with low power output. Here is an overview of the key features and functionalities offered by the NCP1203D60R2:
1. High Integration: The NCP1203D60R2 combines various important functions into a single device, including a high-voltage startup oscillator, a current mode PWM controller, a frequency limit circuit, a soft-start delay circuit, and a zero-power high voltage (HV) regulating clamp.
2. Efficient PWM Controller: The IC utilizes a current mode PWM (Pulse Width Modulation) controller operating at a fixed frequency. This ensures efficient power conversion, leading to high overall system efficiency.
3. Startup and Standby Modes: The NCP1203D60R2 incorporates a high-voltage startup oscillator, enabling reliable startup under various voltage conditions. Additionally, it features a low-power standby mode, which minimizes power consumption when the converter is not actively operating.
4. Fixed Frequency Operation: The IC operates at a fixed frequency of 60 kHz, providing consistent and predictable performance. This simplifies the design process and allows for accurate control of power conversion.
5. Frequency Limit Function: The NCP1203D60R2 includes a frequency limit circuit that prevents the frequency from exceeding a predefined value
