MPQ4485GU-LS-AEC1-P

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Introduction

The MPQ4485GU-LS-AEC1-P is a DC/DC Switching Regulator, designed as a closed loop current mode controller that provides a high efficient, low ripple solution for power-sensitive applications. This regulator contains advanced features and also has a wide input voltage range to support buck, boost and buck-boost configurations in a wide range of applications. It has high accuracy (AEC-Q100-qualified) current sensing, current limit, and a wide output voltage range.

Features

The MPQ4485GU-LS-AEC1-P DC/DC converter provides the following:

• Wide input voltage range: 4.5V to 50V
• Wide output voltage range: 0.2V to 12V
• High efficiency: up to 97.5%
• Low ripple: as low as 50mVa
• Wide switching frequency range: 50kHz to 700kHz
• High accuracy current sensing with AEC-Q100-qualified accuracy (+/- 2%)
• Compact package: 4mm X 7mm QFN
• Low-profile package: 1mm height
• Integrated MOSFET for load switch
• Integrated current sense resistor

Application Field

The MPQ4485GU-LS-AEC1-P DC/DC converter can be used in a wide range of applications, such as automotive infotainment systems, industrial automation, LED lighting, home and appliance, portables and telecommunications.

The regulator is used in automotive infotainment systems to provide a power supply solution with high efficiency and low noise. It offers a wide input voltage range and output voltage stability, enabling the system to run at different voltages. The onboard current limit feature enables it to protect the system against overloading conditions. Thanks to its low profile and ultra-low height, it can be used in space-constrained automotive designs.

The MPQ4485GU-LS-AEC1-P is also used in industrial automation systems. The dc/dc converter provides high performance, low ripple, and high efficiency to support the system\'s critical operations. Its quick response and accurate current sensing allow the system to perform and monitor delicate operations with accuracy. Its wide switching frequency and low noise ensure system stability.

The regulator is also used in LED lighting systems. Its wide input voltage range, low ripple, and high efficiency ensure system reliability and allow for high power conversion efficiency, resulting in long lifespan and low system cost. Its low profile, accurate current sensing, and fast response features enable the system to remain stable and perform according to the desired levels.

Working Principle

The MPQ4485GU-LS-AEC1-P is a closed loop current mode controller. The core of the converter is a switch mode topology, employing an integrated MOSFET switch to regulate the voltage. The regulator operates in pulse width modulation (PWM) mode, and its current sensing is monitored by an internal current sense circuit. The internal current sensing creates an error signal that is sent to the PWM circuit, which adjusts the duty cycle of the switch to regulate the output voltage.

The MPQ4485GU-LS-AEC1-P is designed to switch at frequencies ranging from 50 kHz to 700 kHz. This allows the converter to modulate and regulate the output voltage accurately and efficiently across a wide range of input voltages. The converter also provides a high level of system integration with its integrated current sense resistor and MOSFET switch.

The regulator also has an integrated current limit feature, which limits the maximum current of the output. This feature helps to protect the system against overloads, enabling the system to run safely and efficiently.

Conclusion

The MPQ4485GU-LS-AEC1-P is a high performance, low ripple and efficient DC/DC switching regulator. It is ideal for use in automotive infotainment systems, industrial automation, LED lighting, and other power-sensitive applications. The regulator features advanced features, such as wide input voltage range, wide output voltage range, AEC-Q100 qualified current sensing, current limit and wide switching frequency range. Its integrated current sense resistor and MOSFET switch ensure system stability and high power conversion efficiency. Its compact size makes it ideal for space-constrained designs.

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