MP2148GQD-33-Z

PMIC - Voltage Regulators - DC DC Switching Regulators

The MP2148GQD-33-Z is a voltage regulator from Texas Instruments, designed for DC/DC switching-regulator applications. The regulator provides full control of output voltage, peak current control, and high efficiency for synchronous-rectified buck converters for a wide range of voltage, current, and temperature operating ranges. The regulator features a fast turn-on and low-bias operation that makes it ideal for use as an automotive-grade regulator for automotive systems.

Features and Benefits

The MP2148GQD-33-Z features an on-chip gate driver integrated with a PWM controller, coupled with on-chip power MOSFETs. This combination is designed to provide fast turn-on and low-bias operation, allowing the form factor and cost of the product to remain much lower. The device has a wide input voltage range of 4V to 32V, making it suitable for various automotive applications. In addition, the device features an adjustable switching frequency up to 1MHz and an integrated synchronization for easy synchronization with external clock devices. The regulator also features protections that can help prevent damage from overcurrent, overtemperature, and an open-loop condition.

Applications

The MP2148GQD-33-Z is mainly designed for use in automotive applications. Examples of such applications include voltage regulation and control in fuel pumps, ignition coils, window lift motors, and headlights, as well as improved power-supply regulation in audio systems, equalizers, and amplifiers. Additionally, it is suitable for use as a DC/DC buck regulator in industrial and medical applications.

Working Principle

The MP2148GQD-33-Z operates on the principle of controlling the voltage of the output voltage when connected to an external circuit in order to regulate it. It is designed to efficiently deliver high current from an input voltage to an output voltage, with minimal losses. The device features an on-chip gate driver integrated with a PWM controller, coupled with on-chip power MOSFETs. This combination is designed to provide fast turn-on and low-bias operation, allowing the form factor and cost of the product to remain much lower. The device can switch at up to 1MHz and can integrate with external synchronization for optimum performance.

The voltage regulator utilizes a control loop, which includes a comparator that monitors the output voltage and adjusts the gate drive to the power MOSFETs accordingly. The two MOSFETs then drive the inductor and capacitor, and together, they filter the current and regulate the output voltage. By adjusting the frequency of the PWM signal, the regulator can be set to operate at any given output voltage, ranging from 2.2V to 28V, with a typical efficiency of over 92%.

Conclusion

The MP2148GQD-33-Z from Texas Instruments is a versatile voltage regulator, designed for a wide range of DC/DC switching-regulator applications. It provides full control of output voltage, peak current control, and high efficiency for synchronous-rectified buck converters. With an efficient protection system and wide input voltage range, the device is suitable for automotive and industrial applications. Its integrated PWM controller and fast turn-on and low-bias operation make the product an ideal solution for automotive applications.