MP8843GG-Z

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DC-DC switching regulators provide a wide range of power management solutions, from the very simple step-down converters to higher-level synchronous buck converters. The MP8843GG-Z is an integrated synchronous buck switching regulator that is designed to support a wide range of applications such as point-of-load (PoL) DC-DC power conversion, general-purpose buck voltage regulation, battery-charging applications, and system-level power sequencing.

The MP8843GG-Z features an efficient 72V, 4A synchronous step-down solution with a high switching frequency of up to 2MHz. It employs a precise current-mode control loop architecture with a fast transient response with excellent line sensitivity and load regulation and allows the user to select multiple output voltage settings. The device is capable of operating from a 6V to 36V DC input voltage range and allows the user to adjust the output voltage from 0.6V to VIN with a wide range of resistance divider configurations.

The MP8843GG-Z utilizes single-stage PWM control to provide an excellent efficiency of up to 96% over a wide input voltage range. It is designed to run from the same voltage source as the load, allowing for reduced power delivery complexity and costs. It supports a wide range of load current profiles and can handle peak load requirements. The MP8843GG-Z features dynamic voltage scaling (DVS) capability, allowing the user to easily adjust the output voltage with external resistors.

The MP8843GG-Z provides a number of protection features such as over-voltage protection (OVP), under-voltage lockout (UVLO), over-temperature protection (OTP) and current limit protection (CLP) to guarantee the safety of the system and ensure the reliability of its operation. It also features a built-in soft-start (SS) control, minimizing the inrush current during start-up and protecting the sensitive circuitry from voltage overshoots.

The MP8843GG-Z is an ideal choice for a wide range of applications including industrial, telecom, server, storage, and consumer products. It is highly efficient and cost-effective and offers a complete solution for DC-DC power conversion.

The MP8843GG-Z works by regulating the output voltage by modulating the switching frequency of its internal transistor switches. The internal high-voltage MOSFET switches switch on and off at a frequency determined by the output voltage, which is determined by the resistance divider circuit. When the output voltage rises, the MOSFET turns off and the switching frequency increases. When the output voltage falls, the MOSFET turns on and the switching frequency decreases. This modulation of the switching frequency allows for the regulation of the output voltage.

The output voltage is regulated by a combination of the internal PWM controller and the external voltage divider. The internal PWM controller will turn on the high-voltage MOSFET when the voltage at the output falls below the desired level and will turn off the MOSFET when the voltage reaches the desired level. The external voltage divider is used to set the desired output voltage level. As the input voltage changes, the output voltage is increased or decreased by the voltage divider.

In summary, the MP8843GG-Z is an integrated synchronous buck switching regulator that provides an efficient, cost-effective solution for DC-DC power conversion. It features an efficient 72V, 4A synchronous step-down solution with a high switching frequency of up to 2MHz and is ideal for a wide range of applications such as point-of-load (PoL) DC-DC power conversion, general-purpose buck voltage regulation, battery-charging applications, and system-level power sequencing. It utilizes single-stage PWM control to provide an excellent efficiency of up to 96% over a wide input voltage range and has a number of built-in protection features such as OVP, UVLO, OTP, and CLP.

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