EVL6591-90WADP

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When it comes to high-efficiency power supplies, EVL6591-90WADP is one of the top-class choices. It is an evaluation board of AC to DC and DC to DC switching power supplies that are designed to fit a wide range of application scenarios.

The EVL6591-90WADP belongs to an innovative series of boards that comply with the EMI and NOV standards. Besides, it features various protections like soft start, over temperature, over current, over voltage, and short-circuit protections, making it ideal for audio amplifier systems that require low EMI.

The board comes with 16 different preset output voltages ranging from 1.8 V to 24 VDC. It accepts a wide input voltage range of 90 to 264 VAC and comes with adjustable output current limits ranging from 0.5 A to 4.0 A.

Featuring ultra-high efficiency of 92% for a wide load range, the board is perfectly suited for such applications as telecom infrastructures, industrial automation, and medical equipment systems. As such, the EVL6591-90WADP is the optimal choice for cost-saving and reliable distributed power.

Power Supply Working Principle of EVL6591-90WADP

The AC/DC to DC/DC and DC/DC to DC/DC power conversion entails a process wherein an alternating current (AC) is employed to control a current flowing in a single circuit. This process is made possible through the switching of two electrodes at a particular period. As a result, the average output voltage is regulated.

For power applications, the EVL6591-90WADP uses a synchronous buck topology to convert a high input voltage (from 90 to 264 VAC) into a low-voltage, low-current output. The buck topology requires two electrodes to control the current flow in the circuit. One electrode is used to connect the input voltage and the other is used to connect the output load. The switching of the two electrodes is then controlled by an external controller.

The controller is responsible for driving a MOSFET that can be switched between on-mode and off-mode. When the MOSFET is in off-mode, the input voltage is not supplied to the output load. However, when the MOSFET is in on-mode, the input voltage is supplied to the output load and the connection is maintained until the controller turns off the MOSFET. This switching process is vital for obtaining an output voltage that is regulated against the change of load.

The EVL6591-90WADP is powered by fully integrated power semiconductor devices, including a 850 V avalanche rugged power MOSFET, a high-side MOSFET, a low-side MOSFET, two Schottky diodes, two linear regulators, and a high-voltage current-sense amplifier. All these components together enable the evaluation board to be more efficient and reliable, and also reduces the size of the design.

Conclusion

Overall, the EVL6591-90WADP evaluation board is a powerful and reliable solution for power applications ranging from telecom infrastructures, industrial automation, and medical equipment systems. Its high-efficiency levels, wide range of preset output voltages, and protections provide a cost-saving and reliable distributed power option.

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