NCP1236BD100R2G

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PMIC (Power Management ICs) is a type of integrated circuit designed for use in power management applications. The NCP1236BD100R2G is one example of a power management IC developed by ON Semiconductor. It is a voltage regulator (or “DCDC converter”) specifically designed for off-line ac/dc power supplies. This article will explore the application field and working principle of the NCP1236BD100R2G.

Applications

The NCP1236BD100R2G is designed for use in off-line ac/dc power supplies up to an input voltage of 260V AC. It is a single-channel device, with an output power of up to 30W. It features an output current of 0.5A to 3.2A and an adjustable output voltage range of 2.5V to 16V. The device also offers constant current and constant voltage capabilities, as well as current limiting and overtemperature protection.

The NCP1236BD100R2G is suitable for a variety of applications, including adapters, digital televisions, monitors, automotive, industrial and smart home applications. Its wide input voltage range, low operating current and low standby power consumption make it an attractive choice for these types of applications.

Working Principle

The NCP1236BD100R2G operates in a PFC (Power Factor Correction) topology, meaning that it corrects for an input voltage waveform that is non-sinusoidal. This helps to reduce harmonics and power loss, improving the efficiency of the power supply. When input voltage is applied, the PFC controller senses this and turns the power switch on and off at the optimal intervals to control the output voltage.

The NCP1236BD100R2G also features a secondary-side control IC which senses the output current of the NCP1236BD100R2G and modulates the switch duty cycle, ensuring an accurate and stable output voltage. Additionally, the device employes an adjustable soft-start, limiting inrush current and ensuring the power supply starts up quickly and safely.

The NCP1236BD100R2G also features an overvoltage protection circuit. This protects the system against high output voltages by detecting when the output voltage exceeds the set limit and shutting down the power switch. This also prevents the device from being damaged due to excessive input voltage.

The NCP1236BD100R2G is a highly efficient and reliable DC/DC power converter, suitable for a variety of applications. Its wide input voltage range, low operating current and current limiting and overtemperature protection make it an attractive choice for a variety of applications.

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