EA6391MH

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The EA6391MH is an Evaluation Board designed for DC/DC and AC/DC (Off-Line) SMPS. It provides critical components to process energy flow and provides a convenient platform for engineers to quickly evaluate the electrical performance of their products.

The main application field of EA6391MH is for offline SMPS (Switched Mode Power Supply). It is capable of converting AC input into various DC output voltages with wide range of output current. It enables designers to quickly evaluate the electrical performance of their products. With its various features, EA6391MH is suitable for various or continuously changing input ac voltage, line filter inductor , current limit, soft start, secondary side led indicator , etc.

In common language, the EA6391MH can generate and interface power sources in DC/DC and AC/DC circuits. It can be in different modes like CV (Constant Voltage), CC (Constant Current),and CP( Constant Power). This makes it an ideal solution for industrial control, charging systems, automotive systems, and other application areas.

The working principle of EA6391MH relies on a flyback topology circuit. This is a type of switching power supply that converts an input voltage into a regulated, isolated output voltage. In this case, the input voltage source is AC, and the output voltage is DC. The process starts by providing power from an AC source to the flyback transformer primary. The AC current flows through the primary winding which sets up the magnetic field in the transformer\'s core. Then the various currents and voltages are supplied to the controller circuit, which proceeds to control the switching of the main MOSFETs, and the corresponding pulse width modulation (PWM) signal. This turns the main MOSFETs into voltage and current sources, and once the pulses get to the secondary, the inducted energy is released in a smooth DC output. The current and voltage feedback has been usually taken from the output side, where voltage and current are measured with isolated shunt resistors and the voltage feedback is taken from the output side to control the duty cycle.

Overall, the EA6391MH board is a very useful tool in the DC/DC and AC/DC application field. Its flyback topology circuit ensures a steady and reliable output voltage. It is easy to use, thanks to its controller circuit’s different features such as current limit, soft start, and various input AC voltage range. With all these features, EA6391MH is an ideal solution for various applications such as industrial control, charging systems, and automotive systems.

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