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MP2141NGTF-P Application Field and Working Principle

MP2141NGTF-P is a DC-DC Buck switching voltage regulator designed by MonolithicPower System. It enables low-power applications to be designed with lower system cost and cleaner power regulation. The MP2141NGTF-P belongs to the category of PMIC (Power Management ICs) – Voltage Regulators – DC DC Switching Regulators.

Product Overview

The MP2141NGTF-P is an integrated DC-DC Buck converter. It utilizes hysteretic or PWM mode for output voltage regulation. A built-in 33V, 0.5Ω power MOSFET can handle up to 1.5A current. The device operates from an input voltage range of 4.5V to 16V and provides an output voltage range of 0.6V to 12V. It also has several features such as Maximum Power Point Tracking (MPPT), Soft-Start and Overcurrent Protection.

In addition to providing high efficiency and fast transient response, the MP2141NGTF-P also features a low quiescent current for optimal power savings. The high operating frequency of 1.5MHz allows for small external components and minimized overall system size. Finally, the excellent electrical characteristics of the device make it suitable for a variety of applications.

Applications

The MP2141NGTF-P is designed to provide highly efficient, low quiescent current and small size solutions for automotive, battery powered systems, and portable/mobile items. The DC/DC converter can be used in a wide array of applications requiring a buck converter, such as automotive battery systems, portable electronics, power supplies, and other voltage regulation needs.

Features and Benefits

The MP2141NGTF-P enables excellent power reduction and money-saving performance with the following features and benefits:

• Hysteretic or PWM Mode for Output Voltage Regulation – Hysteretic or Pulse Width Modulated (PWM) mode for output voltage regulation is supported, allowing for integrated power saving features such as Maximum Power Point Tracking (MPPT) and Soft-Start.
• Low Quiescent Current – A built-in ultra-low quiescent current of 0.5uA is guaranteed for optimal power savings.
• Input Voltage Range – The device operates from an input voltage range of 4.5V to 16V.
• Output Voltage Range – The device provides an output voltage range of 0.6V to 12V, allowing for voltage customization in order to match the required output voltage.
• High Operating Frequency – The high operating frequency of 1.5MHz allows for small external components and minimized overall system size.
• High Efficiency – The MP2141NGTF-P offers high efficiency up to 91%.
• Fast Transient Response – The device offers fast transient response with a wide switching range of 0.5Ω to 1.5A, making it suitable for power saving designs.
• Overcurrent Protection – The device provides Overcurrent protection with a fast recovery time.
• Wide Temperature Range – The device can operate over a wide temperature range of -40C to 125C.
• RoHS Compliant – The MP2141NGTF-P is compliant with the Restriction of Hazardous Substances (RoHS) directive 2011/65/EU and was tested for levels lower than those defined by the European Commission.

Working Principle

The MP2141NGTF-P is built with a hysteretic or Pulse Width Modulated (PWM) architecture. The hysteretic mode adjusts the output voltage to the desired set-point. When the output voltage drops, the device’s integrated 0.5Ω power MOSFET turns on to bring the voltage back up to the required level. When the voltage is too high, the device decreases the duty cycle to the correct level.

The PWM mode is used when higher currents are required. The device works by switching the MOSFET on and off too rapidly, thus allowing more current to flow. The frequency of the switching is set by the external components, such as the inductor and capacitor. The components must be chosen carefully in order to achieve optimal performance.

The device also features a Maximum Power Point Tracking (MPPT) circuit. The MPPT algorithm is used to increase efficiency by optimizing the operating point of the converter. The circuit tracks the Maximum Power Point (MPP) and adjusts the output voltage to maintain optimal performance. The Soft-Start feature of the device helps ensure smooth startup and prevents the output from experiencing overshoot or undershoot.

Finally, the MP2141NGTF-P provides overcurrent protection. When the current reaches a certain point, the device shuts down the converter to protect the load. The device also features undervoltage and overtemperature protection in order to prevent damage.

Conclusion

The MP2141NGTF-P is a DC-DC Buck switching voltage regulator designed by Monolithic Power System. It is designed to provide highly efficient, low quiescent current and small size solutions for a variety of applications. The device operates from an input voltage range of 4.5V to 16V and provides an output voltage range of 0.6V to 12V. It also features several features such as Maximum Power Point Tracking (MPPT), Soft-Start and Overcurrent Protection.

The MP2141NGTF-P is suitable for automotive, battery powered systems, and portable/mobile items. Its versatility, excellent electrical characteristics, high efficiency, and fast transient response make it an ideal choice for a variety of power conversion applications.

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