NCP81152MNTWG

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NCP81152MNTWG is a specialized power management integrated circuit (PMIC) designed by ON Semiconductor. This PMIC includes an integrated Flyback Gate Driver, a System Reset Generator, and a Low Dropout Regulator (LDOR). As one of the ON Semiconductor’s Gate Drivers, the NCP81152MNTWG can provide high peak drive value of 13A (180A/μs) to accommodate design variability in the customer’s end application.

The NCP81152MNTWG can be used in power supply applications where high-efficiency gate drivers are needed to control the switching conversion from high voltage to low voltage. The application fields of the NCP81152MNTWG include but not limited to computers, wireless communications, lighting products, home appliances, consumer electronics, and industrial applications. The feature of the NCP81152MNTWG is defined by its low quiescent current and low dropout voltage capabilities that can help the user to improve efficiency and power factor in the electrical system.

The NCP81152MNTWG has two outputs, each equipped with a dedicated gate drive supply input. A shutdown/standby mode timer is also included as part of this PMICs. All of these features come with voltage monitoring capabilities that can provide superior thermal performance and protection against over-voltage, over-temperature, and under-voltage. On the other hand, the external compensation loop of the NCP81152MNTWG provides additional flexibility to the user to configure the converter performance as desired.

The working principle of the NCP81152MNTWG is based on the concept of a flyback converter. This type of power converter utilizes the transformer’s leakage inductance for switching the current between the primary and secondary windings of the transformer. This leakage inductance induces voltages in the secondary winding such that the current of the primary winding is drawn upon the load. This process is repeated and the energy stored in the flyback transformer is efficiently transferring energy to the load.

The NCP81152MNTWG can work with different types of primary side MOSFETs such as enhancement-mode and depletion-mode FETs. The voltage feedback loop of the NCP81152MNTWG is used to control the current and voltage of the secondary winding. When the output charge current is sensed by a low side current sensor, the signal is sent to the voltage feedback loop of the NCP81152MNTWG to regulate the voltage output. Further, over-current protection is also integrated with the NCP81152MNTWG to ensure safety of the system from short circuit.

In summary, the NCP81152MNTWG is a sophisticated power management integrated circuit that accurately controls the primary side switching in flyback converters. This PMIC can deliver voltage and current feedback while also providing a wide range of features such as over-temperature, over-current and over-voltage protection. Its low dropout voltage and quiescent current capabilities also make it suitable for application in high efficiency power supplies. The NCP81152MNTWG is suitable for a wide range of applications such as, computer, wireless communication, lighting, home appliances, consumer electronics, and industrial applications, where high-efficiency gate drivers are needed to control the voltage conversion from high to low.

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