MP2361DK-LF-P

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The MP2361DK-LF-P is a highly efficient, synchronous rectification DC/DC switching regulator, designed for low voltage, high current applications. As a member of the PMIC – Voltage Regulators – DC/DC Switching Regulators, this device provides highly accurate output voltage with low-ripple, low-EMI radiated emissions, high power density and low thermal resistance.

The MP2361DK-LF-P integrates a high performance 2-channel NMOS switching power stage and some AUX components in the same package, enabling a cost-effective, small-size system. The device can switch power between the input rail and the output rail in both directions with a wide range of fast switching frequencies and accurately controlled output voltage. It also provides various modes of operation for different power application scenarios including step-down, step-up and buck/boost.

The MP2361DK-LF-P also features several protection functions including UVLO, OTP, OVP and OCP designed to protect the system from destructive conditions. The device also integrates output disconnect (off-mode), shared-current regulation (FCB), switching frequency control mode, external synchronization, and a 5-bit control interface (I2C) to facilitate system level optimization and customization.

The MP2361DK-LF-P is an ideal power solution for high current applications such as consumer electronics, enterprise IT equipment and industrial systems.

The working principle of the MP2361DK-LF-P is based on the basic buck, boost, or buck-boost operation. It is a synchronous rectification DC/DC converter with a voltage mode control scheme. The device consists of two main parts, the power stage and the controller. The power stage consists of two power switches (NMOS) connected in series between the input and output voltages, a logic transistor to enable the power switches, and two synchronous rectifiers (NMOS) connected to the drains of the power switches. The control loop comprises of an error amplifier, a PWM-comparator, an Output Voltage Sense Amplifier (OSA) and some additional components used to adjust the operating parameters. The device is enabled when the Enable (EN) pin is pulled high. When device is enabled, the reference voltage is divided by the feedback resistors and compared to the feedback voltage. The error signal is amplified by the error amplifier and then compared to the internal sawtooth signal by the PWM comparator. The resulting control signal is then fed to the power stage to provide the precise control necessary for accurate output voltage regulation.

In summary, the MP2361DK-LF-P is a highly efficient switching power regulator with a wide range of applications in consumer electronics, enterprise IT equipment and industrial systems. It is an ideal power solution for high-current applications due to its wide range of fast switching frequencies, accurately controlled output voltage, protection functions and output disconnect feature.

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