MP3428GL-P Integrated Circuits (ICs)

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DC–DC switching regulators are widely employed to directly convert one voltage to another. In recent years, these types of regulators have seen further development for high power and high efficiency applications. The MP3428GL-P is a highly advanced and versatile DC-DC buck converter with a wide input voltage range and high output current range. It is the perfect choice when it comes to stepping down input voltages while providing the flexibility to customize output parameters. This article will discuss the application fields and working principle of the MP3428GL-P.

Features of MP3428GL-P

The MP3428GL-P is a high-performance synchronous buck converter. It is specially designed for high-current, high-performance applications such as automotive, computing, media processors, server and storage, and embedded systems. It features a wide 5V to 42V input voltage range and an adjustable 0.5V to 5.5V output voltage range. The maximum output current is up to 18A and the switching frequency is up to 4MHz. The converter also provides protection features against over-current, over-temperature, and short circuit. It also features low dropout voltage, high efficiency, and low ripple.

Application Fields of MP3428GL-P

The MP3428GL-P is mainly used in automotive applications due to its wide input voltage range. Automotive systems require higher output currents and lower total system cost. The device is frequently found in the following applications:

• Charging automotive batteries
• Providing power to LED lighting used in vehicles
• Powering infotainment systems
• Overvoltage/overcurrent protection
• Charging portable devices in vehicles

The MP3428GL-P is also well suited for computing applications. It provides the stability and safety to run components like processors and motherboards safely. It is used in a wide range of computing products including gaming laptops, workstations, and desktop computers. The device is also used in embedded systems such as industrial automation, robotics, and medical applications.

Working Principle of MP3428GL-P

The MP3428GL-P is a synchronous buck converter which means that it uses an internal PWM controller and an external high- or low-side FET switch to regulate the output voltage. When the input voltage is higher than the desired output voltage, the converter will “step down” the voltage using voltage conversion. The high-side switch connects to the input voltage and low-side switch is connected to ground potential. When the high-side switch is on, the lower switch is off and vice versa. The PWM controller adjusts the duty cycle of the two switches to regulate the output voltage.

The MP3428GL-P also has a built-in feedback loop which is used to monitor the output voltage and ensure it is within specified parameters. The feedback loop helps the device reach and maintain the desired output voltage. In addition, the converter has a short circuit protection which disconnects the output from the input if an over-current situation is detected.

Conclusion

The MP3428GL-P is a highly versatile and advanced DC-DC buck converter with a wide input voltage range and adjustable output voltage. The device is well suited for high-current, high-performance applications such as automotive, computing, media processors, embedded systems, and more. Its working principle is based on the synchronous buck converter using an internal PWM controller and an external high- or low-side FET switch for voltage conversion. The built-in feedback loop helps to monitor and maintain the output voltage and the short circuit protection helps to protect against over-current situations.

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