NCP5181DR2G

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PMIC (Power Management Integrated Circuit) provides stable power to the integrated circuit. PMIC Gate Drivers are used to control the bidirectional switching of transistors (like MOSFETs, IGBTs and Bipolar Transistors). In this article, we will discuss the application field and working principle of NCP5181DR2G – a low-side driver.

NCP5181DR2G is a low-side driver with configurable current-sense voltage that provides a fast turn-on response. The turn-on time of NCP5181DR2G is typically <100ns, enabling high speed semiconductor switching. NCP5181DR2G provides an operation voltage of 5V-20V and a maximum load current of 3A. The operating frequency can be set between 0Hz to 500kHz, depending on the application.

NCP5181DR2G is mainly used in industrial applications and is ideal for motor control systems that require fast switching and high current capacity. In the motor control systems, NCP5181DR2G is used as a power switch to control the operation of the motor by switching off the power supply when the motor is not in use. NCP5181DR2G can also be used in power supplies, LED drivers, solar energy systems, and uninterruptible power supply (UPS) systems.

The working principle of NCP5181DR2G is based on voltage regulation. The voltage regulation starts with a regulated power supply which is configured to supply a fixed output voltage based on the reference voltage of the circuit. The voltage output from the regulated power supply is used as the control voltage to power the gate driver control circuitry. The control circuit then regulates the current flowing through the gate and thus controls the conduction of the circuit. The control circuitry is also configured to provide the necessary safety features such as over-temperature protection, current protection, and short-circuit protection.

The output voltage of NCP5181DR2G is determined by the input voltage and the current level. The output voltage is also adjustable using an external potentiometer. The output voltage of NCP5181DR2G can range from 5V to 20V depending on the input voltage and current. The output current is limited at 3A maximum. The operating temperature range is -40°C to 85°C. NCP5181DR2G also offers thermal protection, under-voltage lockout, and over-current protection.

In conclusion, NCP5181DR2G is a low-side driver with configurable current-sense voltage and fast turn-on response. It is mainly used in industrial applications including motor control, power supplies, LED drivers, solar energy systems, and uninterruptible power supply (UPS) systems. The working principle of NCP5181DR2G is based on voltage regulation. The output voltage is adjustable using an external potentiometer and the output current is limited at 3A maximum. The operating temperature range is -40°C to 85°C, with thermal protection, under-voltage lockout, and over-current protection.

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