MP9942AGJ-Z

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The MP9942AGJ-Z is a DC-DC switching regulator, part of the wide voltage regulator family and is widely used to control DC motor speeds when it needs to be done on a regular basis and with varying levels of speeds. It is a step-down switching regulator, meaning it can be applied when lowest voltage is desired. It offers up to 2A continuous output current and and up to 6A peak current, with a very low dropout voltage.

DC-DC Regulators release current and voltage from a higher source voltage to a lower voltage, based on DC and AC principles. The switcher works on the same principle by regulating current from a higher voltage to a lower voltage. The processs involves three stages: a startup phase, a run/regulation phase, and a lessening or null phase. The first stage consists of applying a voltage, which generates a current into the buck or step-down transformer. The transformer then converts the higher voltage and current into a lower regulated voltage and current. This voltage and current then can be used to control DC motor speed.

The second phase, the run/regulation phase, is when the power output is regulated automatically, using feedback technology to maintain a constant output level. When the desired output level is achieved, the feedback control will minimize the input power to just the required level to maintain the output voltage. This helps to improve the efficiency of the regulator and to minimize electric power consumption.

The final phase of the DC-DC regulator is the lessening or null phase where, when the current is no longer needed, the regulator stops the power output and the cycle will start again.

The MP9942AGJ-Z, which falls into the PMIC - Voltage Regulators - DC DC Switching Regulators family, offers a wide range of use, delivering an up to 6 A peak and a 2A continuous output current and an ultra-low dropout voltage. It can be used in applications where precise control is essential and varies the speed of a DC motor without compromising on energy consumption.

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