MP20073DH-LF-P

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PMIC, or power management integrated circuits, are essential components in power delivery, control and conversion of a wide range of electric systems. They provide the necessary voltage, current and temperature controls that ensure the safe and efficient performance of electric systems in a variety of operating environments. One such PMIC is the MP20073DH-LF-P, which is a special purpose voltage regulator. This section outlines the application field and working principle of the device.

Application Field

The MP20073DH-LF-P is a low voltage fixed-frequency step-down regulator. It can be used in a variety of applications, such as DC-DC power supplies, battery-powered equipment, automotive electronics, consumer and industrial control systems, and other embedded microcontroller applications. The device is designed to work over a wide input voltage range of 4V to 24V, and provide an adjustable output voltage from 0.6V to 20V, making it suitable for a variety of applications where a precise output voltage is required.

Working Principle

The MP20073DH-LF-P utilizes a combination of a fixed-frequency current mode control and a simple phase-shift technique to control the output voltage. The device includes an internal voltage reference and an error amplifier, which monitors the output voltage and generates an output voltage control signal that is fed back to the power stage for precise regulation. The device employs an external N-channel MOSFET in the power stage, to achieve a low on-resistance, high efficiency, and wide input voltage range.

When the device is enabled, the controller ramps up the output voltage of the power stage to the desired set point. As the output voltage increases, the feedback voltage begins to reach the upper comparator\'s limit, causing the pulse width to begin to decrease. As the output voltage reaches its desired set point, the pulse width approaches zero, turning the power stage off until the next clock cycle. This process repeats until the output voltage is regulated at the desired level. Furthermore, the device also features built-in protection mechanisms such as over-voltage protection, over-current protection, and short-circuit protection, which ensure the safe and reliable operation of the system.

In summary, the MP20073DH-LF-P is a special purpose voltage regulator, which can be used in a variety of applications requiring precise voltage regulation. It is designed to work over a wide input voltage range, and it features a combination of fixed-frequency current mode control and a simple phase-shift technique for precise output voltage regulation. The built-in protection mechanisms ensure the safe and reliable operation of the system.

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