MP2918GL-P

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The MP2918GL-P is a high-performance switch controller manufactured by Monolithic Power Systems (MPS). It is classified as a DC-DC switching controller, specifically from the PMIC (Power Management IC) voltage regulator family. This device aims to extend the battery life on portable consumer electronics and is suitable for a wide range of system designs.

The primary features of the MP2918GL-P are adjustable switching frequency, independent control and monitoring of supplies, and fault protection. With an adjustable frequency range of 0.37kHz to 5.5MHz, this switch controller is specifically designed for low power audio systems, DC-DC converter systems, and portable power units (e.g., cell phones).

The MP2918GL-P not only limits the peak current and delivers a steady supply, but also helps maintain the switching frequencies. This reduces noise levels and extends the system’s battery life. The device offers a wide range of features to facilitate the management of low-power systems, such as current limiting and system reset capabilities. In addition, it provides support for up to 12-pulse synchronous rectification, offering improved efficiency and performance.

The MP2918GL-P also offers a wide range of device protections, such as over-temperature protection, over-voltage protection, and over-current protection. It also includes on-board temperature and voltage monitoring to ensure the safety and accuracy of the input and output voltages. Furthermore, this device provides several external control and protection features, such as an adjustable edge rate, an adjustable dead time, and an adjustable under voltage lockout voltage.

The working principle of the MP2918GL-P switch controller is based on the fixed on-time Peak Current Control (PCC) and Pulse Width Modulation (PWM) control techniques. The device senses and controls the supply current by using an external sense resistor. The external sense resistor is connected to the source and enhanced to sense the voltage drop across it for current control.

The device features adjustable PWM and PCC operating modes, providing the user with more control over the device operation. When the PWM mode is enabled, the regulation voltage follows an adjustable target voltage. The PWM switching also helps to minimize audio noise levels, reduce power dissipated by the device, and minimize output ripple. When PCC mode is enabled, the system is switched on for a fixed period, thus limiting the peak current.

In addition to being a great device for audio systems and portable power applications, the MP2918GL-P is also ideal for other applications such as industrial motor control, battery charger systems, telecommunication systems, and automotive electronics.

Overall, the MP2918GL-P is an effective, integrated switching controller that offers reliable operation and helps maximize battery life in low-power systems. It is versatile and offers a wide range of features that can be used to control, monitor, and protect a system’s power supplies. This makes it a great choice for a wide range of applications.

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