MI-J2X-MA

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DC-DC converters, such as the MI-J2X-MA, are power electronic devices that take a source of direct current (DC) from a source such as a battery and converts this energy into a different form, usually a different bu voltage or current levels and electrical waveforms. These devices allow for conversion between different DC voltage levels and can even provide isolated, regulated outputs with wide input ranges.

The MI-J2X-MA is a buck-boost converter that combines both buck and boost functions in one integrated package. It is designed to provide precision regulation with minimal external components. The device includes a wide input voltage range of 4.5 to 18V, an adjustable output voltage of 0.8 to 16V, and a maximum continuous current rating of 3A. The device also features a switching frequency of 1MHz, an adjustable pulse-width modulator for precise control, a negative on-time protection circuit, over temperature protection, and over current protection.

The MI-J2X-MA is ideal for applications that require a regulated DC output within a wide input voltage range. It can be used for powering equipment such as motors, embedded systems, and other applications. Its adjustable output voltage and high peak current capability also make it suitable for Li-ion battery chargers.

The MI-J2X-MA works by using a synchronous pulse width modulation (PWM) control circuit to regulate its output voltage. The device takes the input voltage and steps it down or up depending on the output voltage setting. Then, the pulse width modulator adjusts the duty cycle of the output according to the set output voltage and monitors it continuously. The output voltage can be adjusted using an external resistor. As the output voltage changes, the control circuit adjusts the pulse width accordingly to maintain the set voltage.

In order to ensure reliability, the MI-J2X-MA includes a negative on-time protection circuit. This circuit provides over-voltage protection for the output voltage and measures the peak current each high and low pulse to ensure that the output current is in safe limits. Furthermore, the device also includes over temperature and over current protection circuits which respectively disable the output if the die temperature exceeds a certain threshold or if the output current exceeds its peak current rating.

The MI-J2X-MA is a reliable and cost-effective solution for applications requiring a regulated DC output within a wide input voltage range. It provides adjustable output voltage, high peak current capability, and several protection features to ensure safe and reliable operation. In addition, its high switching frequency and low external parts count make it suitable for use in high-density and low power applications. The MI-J2X-MA is an ideal solution for powering embedded systems, motors, and Li-ion battery chargers.

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