NCP78M12CTG

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NCP78M12CTG Application Field and Working Principle

The NCP78M12CTG is an adjustable linear voltage regulator designed for power conversion and regulation applications. This device uses a Voltage Controlled Oscillator to control the output voltage, providing fast and precise control over the output voltage. NCP78M12CTG can be used for different power management applications, including voltage regulation, battery charging, and power factor correction.

This device is primarily used in high-current and high-voltage applications, such as automotive and industrial applications. It can also be used in low-voltage, low-power applications such as digital signal processors, controllers, and other delicate electronics. It provides the output voltage accuracy of ±1.5% with temperature coefficient of up to 0.2%. This allows the NCP78M12CTG to maintain a consistent output voltage over a wide range of temperatures.

Principle of Operation

The NCP78M12CTG is an adjustable linear voltage regulator, meaning it regulates the output voltage by reducing the voltage drop across a load resistor. The load resistor is typically connected to the ground node of the voltage regulator.

The output voltage of the NCP78M12CTG is adjusted using a Voltage Controlled Oscillator (VCO), which monitors the output voltage and adjusts the output voltage based on the difference between the set voltage and output voltage. This process is known as voltage feedback and is used by the NCP78M12CTG to maintain a precise output voltage.

The NCP78M12CTG also features voltage tracking – a feature that allows the output voltage to track changes in the input voltage. In order to achieve this, the NCP78M12CTG uses a voltage-to-current converter to measure the input voltage and adjust the output voltage accordingly.

Features of the NCP78M12CTG

The NCP78M12CTG is a high-performance linear voltage regulator. It offers precise voltage control thanks to its voltage feedback and voltage tracking capabilities. Additionally, it has a wide operating temperature range, up to 150°C, and a wide input voltage range, up to 40V. This makes the NCP78M12CTG ideal for a variety of power management applications. For maximum accuracy, the device integrates an internal reference voltage for precise and stable output voltages.

This device also features an adjustable current limit, low-noise operation, active current sharing, and thermal overload protection. The current limit can be adjusted with an external resistor, allowing for flexible current control over a wide range of applications. The low-noise operation is achieved thanks to a dedicated low-power loop and a low-frequency noise filter. The active current sharing allows for multiple devices to be used in series for improved current efficiency. The NCP78M12CTG also comes with an integrated thermal protection circuit that keeps the device safe in the event of an over-temperature condition.

Conclusion

The NCP78M12CTG is a high-performance linear voltage regulator designed for power conversion and regulation applications. Its precision voltage control, wide input and operating temperature range, and numerous other features make it an ideal choice for applications such as voltage regulation, battery charging, and power factor correction. Its adjustable current limit and integrated thermal protection circuit provide added safety and reliability, making the NCP78M12CTG an ideal choice for any high-current and high-voltage application.

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