NCP5426SN13T1G

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Power management integrated circuits (PMICs) are circuit components used to control and regulate the power supply and consumption of electrical devices. This includes motor drivers, controllers, and other components of power management systems. One example of a PMIC is the NCP5426SN13T1G. The NCP5426SN13T1G is a synchronous stepdown regulator used to supply power to intermediate bus voltages in modern electronic applications. Common uses of the NCP5426SN13T1G include motor control systems, battery-powered systems, peripheral power supplies, and distributed power architectures. This article will discuss the application fields and working principle of the NCP5426SN13T1G.

Application Field

The NCP5426SN13T1G is designed to provide an intermediate bus voltage of 1.5V to 13.2V, which can then be used to supply power to external components. This intermediate bus voltage is generated from a 3.2V to 24V input voltage. The flexibility of the NCP5426SN13T1G makes it suitable for a variety of applications. Common applications include motor control systems, battery-powered systems, peripheral power supplies, and distributed power architectures.

The NCP5426SN13T1G is optimized for motor control systems and is an ideal solution for applications that require precise control of a motor’s speed and direction. This includes DC, brushless DC (BLDC), and AC motors. The NCP5426SN13T1G can also be used in battery-powered systems due to its low quiescent current and high efficiency of up to 96%. This makes it an economical choice for long-term battery operation. The NCP5426SN13T1G can also be used in applications requiring peripheral power supplies, such as cell phones, laptops, and tablets, as it has the ability to source high peak current from the intermediate bus voltage.

Finally, the NCP5426SN13T1G is suitable for distributed power architectures as it provides an adjustable bus voltage from 1.5V to 13.2V. This enables the precise control of power distribution in a system. The NCP5426SN13T1G is also equipped with an under-voltage lock-out (UVLO) feature, allowing for reliable system operation.

Working Principle

The NCP5426SN13T1G is a synchronous stepdown regulator used to generate an intermediate bus voltage from a 3.2V to 24V input voltage. The NCP5426SN13T1G is composed of a power switch, a control circuit, and an output voltage adjustment circuit. The power switch is a metal-oxide-semiconductor field-effect transistor (MOSFET) that is used to convert the input voltage to the intermediate bus voltage in three different stages.

The first stage is an on-off operation controlled by the control circuit. When an overload or fault condition is detected, the power switch is turned off. The second stage is an at-rest condition in which the control circuit holds the power switch in the off state. The NCP5426SN13T1G is designed to minimize the current leakage in this state, for improved efficiency. Finally, the third stage is a switching operation in which the power switch is repeatedly switched on and off in order to generate the intermediate bus voltage. The output voltage is adjustable by adjusting the on-time of the power switch.

The NCP5426SN13T1G is also equipped with several protection features that ensure reliable operation. These include an adjustable over-current protection (OCP) circuit, an over-voltage protection (OVP) circuit, an under-voltage lock-out (UVLO) circuit, and a programmable soft-start circuit. These protection features help ensure that the NCP5426SN13T1G will operate reliably in a variety of different applications.

Conclusion

The NCP5426SN13T1G is a synchronous stepdown regulator designed to provide an intermediate bus voltage from a 3.2V to 24V input voltage. This intermediate bus voltage is used to supply power to external components. The NCP5426SN13T1G is optimized for motor control systems, battery-powered systems, peripheral power supplies, and distributed power architectures. The NCP5426SN13T1G is composed of a power switch, a control circuit, and an output voltage adjustment circuit. It is also equipped with several protection features that ensure reliable and efficient operation. Due to its flexibility, it is suitable for a variety of applications.

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