MEJ2S1212SC Power Supplies - Board Mount

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DC-DC converters are electronic devices that convert one DC voltage to another DC voltage. MEJ2S1212SC is a DC-DC converter designed for applications such as power regulators, voltage regulators, and motor control systems. It is a device based on a high-ranking current flow-through coupled inductor, using pulse-width modulation and synchronous rectification technologies. This converter accepts a wide range of input voltage and capable of delivering an output power up to 36 Watts.

The working principle of the MEJ2S1212SC follows the standard switching converter technique. In operation, the device steps down a higher input voltage to the desired output voltage with minimum power losses. The conversion of input to output voltage is done by the alternate switching of two switches under the control of a switching regulator. The primary switch is connected to an LC filter, which creates a minimum loss in stored energy. The other switch regulates the voltage at the output by adjusting the duty cycle and frequency of the switching (PWM).

The MEJ2S1212SC operates in two topologies: buck and buck-boost. In the buck topology, the input voltage is stepped down to reach the desired output voltage. In the buck-boost topology, the input voltage can both be stepped down or stepped up, depending on the desired output voltage. This dual capability of the MEJ2S1212SC makes it an ideal choice for AC/DC input applications that require either output voltage exceeding or below the incoming voltage.

The device also incorporates a current-mode control with an error amplifier and an internal voltage reference. This feature provides stable, fast, soft-start operation of the MEJ2S1212SC and its load. The device also utilizes a synchronous rectifier as the power switch, which offers high-efficiency operation with low power dissipation and high-speed conversion. The switching frequency of the device is adjustable from 200 kHz to 1 MHz, allowing it to further reduce switching losses at minimal operating costs.

The MEJ2S1212SC is designed with a wide range of safety features such as over-temperature protection, over-current protection, output current foldback protection, protection during undervoltage lockouts, and shutdown capability. This ensures that the device will operate safely under all conditions and that any fault in the input voltage will be quickly detected and remedied.

The MEJ2S1212SC is a high-reliability DC-DC converter solution offering excellent performance and protection features. It typically finds applications in automotive, industrial, cloud computing, backlight lighting, and other related systems. It is also suitable for applications that require high-reliability power supplies, such as telecommunications systems, medical equipment, and LED lighting.

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