MPQ4420AGJ-AEC1-Z

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DC-DC switching regulators are widely used in applications such as mobile phones, tablet computers and other electronic products that require small package, low power consumption and high efficiency. The MPQ4420AGJ-AEC1-Z is a DC-DC switching regulator from Monolithic Power Systems that is designed for high-efficiency, space-sensitive applications.

Overview

The MPQ4420AGJ-AEC1-Z is a Pulse Width Modulation (PWM) regulator with a wide output voltage range of 0.5V to 6V. The device is offered in a QFN-30 (6mmx6mm) package and has a current rating of 40A with a switching frequency of up to 2MHz. It is designed with protection features such as over-current, over-voltage, over-temperature and under-voltage. It also has a selectable operating mode which can be switched between voltage or current mode.

Features

The MPQ4420AGJ-AEC1-Z has a range of features that make it suitable for a number of applications. It has Variable Frequency Control for Increased Efficiency – the device can be switched between PFM (low current) and PWM (high current) modes to achieve improved efficiency. PFM mode works at lower frequencies, resulting in lower heat and power dissipation. The device also features a wide input voltage range of 4.5V to 20V, making it suitable for a variety of power input sources. It features selectable current or voltage mode control, allowing for easy and accurate control of the output voltage. The device is also designed with a low quiescent current of 7mA, making it suitable for battery-powered applications.

Application Field

The MPQ4420AGJ-AEC1-Z is suitable for a wide range of applications such as mobile phones, tablet computers and other consumer electronics that require a compact, high efficiency and low power consumption DC-DC switching regulator. The device is capable of handling a wide range of input voltages and current, and its selectable current or voltage mode control allows for easy control of the output voltage. The device also has protection features such as over-current, over-voltage, over-temperature and under-voltage protection, making it suitable for a variety of applications.

Working Principle

The MPQ4420AGJ-AEC1-Z is a Pulse Width Modulation (PWM) regulator. The device contains an internal reference voltage and an internal voltage feedback loop. A voltage reference is used to compare the output voltage to, and the output is adjusted according to the feedback loop. The device also contains an oscillator, which controls the switching of the MOSFETS, and a driver circuit to drive the gate voltage of the MOSFETS. The switching of the MOSFETS is controlled by the oscillator, which outputs a square wave signal with a fixed frequency, and the duty cycle of the signal is adjusted to change the output voltage. The device also features variable frequency control for increased efficiency, which allows the frequency of the oscillator to be adjusted to achieve higher efficiency.

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